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Posted to commits@lens.apache.org by pr...@apache.org on 2015/05/26 14:36:51 UTC
[1/3] incubator-lens git commit: LENS-174: Cube rewriter changes to
support multiple expressions
Repository: incubator-lens
Updated Branches:
refs/heads/master ca30cf8d6 -> 82553db30
http://git-wip-us.apache.org/repos/asf/incubator-lens/blob/82553db3/lens-cube/src/test/java/org/apache/lens/cube/parse/TestJoinResolver.java
----------------------------------------------------------------------
diff --git a/lens-cube/src/test/java/org/apache/lens/cube/parse/TestJoinResolver.java b/lens-cube/src/test/java/org/apache/lens/cube/parse/TestJoinResolver.java
index 2c8dab3..d121ba4 100644
--- a/lens-cube/src/test/java/org/apache/lens/cube/parse/TestJoinResolver.java
+++ b/lens-cube/src/test/java/org/apache/lens/cube/parse/TestJoinResolver.java
@@ -383,7 +383,7 @@ public class TestJoinResolver extends TestQueryRewrite {
" join " + getDbName() + "c1_statetable cubestate ON basecube.stateid=cubeState.id and cubeState.dt= 'latest'",
null, "group by cubestate.name",
null, getWhereForDailyAndHourly2days("basecube", "c1_testfact1_base"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
// Single joinchain with two chains
query = "select citystate.name, sum(msr2) from basecube where " + TWO_DAYS_RANGE + " group by citystate.name";
@@ -393,7 +393,7 @@ public class TestJoinResolver extends TestQueryRewrite {
+ " join " + getDbName() + "c1_statetable cityState ON citydim.stateid=cityState.id and cityState.dt= 'latest'",
null, "group by citystate.name",
null, getWhereForDailyAndHourly2days("basecube", "c1_testfact1_base"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
// Single joinchain with two chains, accessed as refcolumn
query = "select cityStateCapital, sum(msr2) from basecube where " + TWO_DAYS_RANGE;
@@ -403,12 +403,12 @@ public class TestJoinResolver extends TestQueryRewrite {
+ " join " + getDbName() + "c1_statetable cityState ON citydim.stateid=cityState.id and cityState.dt= 'latest'",
null, "group by citystate.capital",
null, getWhereForDailyAndHourly2days("basecube", "c1_testfact1_base"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
// Same test, Accessing refcol as a column of cube
query = "select basecube.cityStateCapital, sum(msr2) from basecube where " + TWO_DAYS_RANGE;
hqlQuery = rewrite(query, hconf);
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
// Adding Order by
query = "select cityStateCapital, sum(msr2) from basecube where " + TWO_DAYS_RANGE + " order by cityStateCapital";
@@ -418,7 +418,7 @@ public class TestJoinResolver extends TestQueryRewrite {
+ " join " + getDbName() + "c1_statetable cityState ON citydim.stateid=cityState.id and cityState.dt= 'latest'",
null, "group by citystate.capital order by citystate.capital asc",
null, getWhereForDailyAndHourly2days("basecube", "c1_testfact1_base"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
// Single joinchain, but one column accessed as refcol and another as chain.column
query = "select citystate.name, cityStateCapital, sum(msr2) from basecube where " + TWO_DAYS_RANGE;
@@ -428,7 +428,7 @@ public class TestJoinResolver extends TestQueryRewrite {
+ " join " + getDbName() + "c1_statetable cityState ON citydim.stateid=cityState.id and cityState.dt= 'latest'",
null, "group by citystate.name, citystate.capital",
null, getWhereForDailyAndHourly2days("basecube", "c1_testfact1_base"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
// Single join chain and an unrelated dimension
query = "select cubeState.name, citydim.name, sum(msr2) from basecube where " + TWO_DAYS_RANGE;
@@ -440,21 +440,21 @@ public class TestJoinResolver extends TestQueryRewrite {
null, "group by cubestate.name,citydim.name", null,
getWhereForDailyAndHourly2days("basecube", "c1_testfact1_base")
);
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
// Multiple join chains with same destination table
query = "select cityState.name, cubeState.name, sum(msr2) from basecube where " + TWO_DAYS_RANGE;
hqlQuery = rewrite(query, hconf);
expected = getExpectedQuery("basecube", "select citystate.name, cubestate.name, sum(basecube.msr2) FROM ",
- " join " + getDbName() + "c1_citytable citydim on basecube.cityid = citydim.id and "
+ " join " + getDbName() + "c1_statetable cubestate on basecube.stateid=cubestate.id and cubestate.dt='latest'"
+ + " join " + getDbName() + "c1_citytable citydim on basecube.cityid = citydim.id and "
+ "citydim.dt = 'latest'"
+ " join " + getDbName() + "c1_statetable citystate on citydim.stateid = citystate.id and "
- + "citystate.dt = 'latest'"
- + " join " + getDbName() + "c1_statetable cubestate on basecube.stateid=cubestate.id and cubestate.dt='latest'"
- , null, "group by citystate.name,cubestate.name", null,
+ + "citystate.dt = 'latest'",
+ null, "group by citystate.name,cubestate.name", null,
getWhereForDailyAndHourly2days("basecube", "c1_testfact1_base")
);
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
// Two joinchains, one accessed as refcol.
query = "select cubestate.name, cityStateCapital, sum(msr2) from basecube where " + TWO_DAYS_RANGE;
@@ -469,7 +469,7 @@ public class TestJoinResolver extends TestQueryRewrite {
, null, "group by cubestate.name, citystate.capital", null,
getWhereForDailyAndHourly2days("basecube", "c1_testfact1_base")
);
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
// Two joinchains with initial path common. Testing merging of chains
query = "select cityState.name, cityZip.f1, sum(msr2) from basecube where " + TWO_DAYS_RANGE;
@@ -485,7 +485,7 @@ public class TestJoinResolver extends TestQueryRewrite {
, null, "group by citystate.name,cityzip.f1", null,
getWhereForDailyAndHourly2days("basecube", "c1_testfact1_base")
);
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
// Two joinchains with common intermediate dimension, but different paths to that common dimension
// checking aliasing
@@ -494,15 +494,15 @@ public class TestJoinResolver extends TestQueryRewrite {
expected = getExpectedQuery("basecube",
"select cubestatecountry.name, cubecitystatecountry.name, sum(basecube.msr2) FROM ",
""
- + " join TestQueryRewrite.c1_statetable statedim_0 on basecube.stateid=statedim_0.id and statedim_0.dt='latest'"
- + " join TestQueryRewrite.c1_countrytable cubestatecountry on statedim_0.countryid = cubestatecountry.id "
- + " join TestQueryRewrite.c1_citytable citydim on basecube.cityid = citydim.id and citydim.dt = 'latest' "
- + " join TestQueryRewrite.c1_statetable statedim on citydim.stateid = statedim.id and statedim.dt = 'latest' "
- + " join TestQueryRewrite.c1_countrytable cubecitystatecountry on statedim.countryid = cubecitystatecountry.id "
+ + " join TestQueryRewrite.c1_citytable citydim on basecube.cityid = citydim.id and (citydim.dt = 'latest')"
+ + " join TestQueryRewrite.c1_statetable statedim_0 on citydim.stateid=statedim_0.id and statedim_0.dt='latest'"
+ + " join TestQueryRewrite.c1_countrytable cubecitystatecountry on statedim_0.countryid=cubecitystatecountry.id"
+ + " join TestQueryRewrite.c1_statetable statedim on basecube.stateid=statedim.id and (statedim.dt = 'latest')"
+ + " join TestQueryRewrite.c1_countrytable cubestatecountry on statedim.countryid=cubestatecountry.id "
+ "", null, "group by cubestatecountry.name, cubecitystatecountry.name", null,
getWhereForDailyAndHourly2days("basecube", "c1_testfact1_base")
);
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
// Test 4 Dim only query with join chains
@@ -653,7 +653,7 @@ public class TestJoinResolver extends TestQueryRewrite {
" join " + getDbName() + "c1_testdim3tbl testdim3 ON testcube.testdim3id=testdim3.id and testdim3.dt='latest'",
null, "group by testdim3.name",
null, getWhereForDailyAndHourly2days("testcube", "c1_summary1"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
// hit a fact where there is no direct path
query = "select testdim3.name, avg(msr2) from testcube where " + TWO_DAYS_RANGE;
@@ -664,7 +664,7 @@ public class TestJoinResolver extends TestQueryRewrite {
+ "ON testdim2.testdim3id = testdim3.id and testdim3.dt = 'latest'",
null, "group by testdim3.name",
null, getWhereForHourly2days("testcube", "c1_testfact2_raw"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
// resolve denorm variable through multi hop chain paths
query = "select testdim3id, avg(msr2) from testcube where " + TWO_DAYS_RANGE;
@@ -675,7 +675,7 @@ public class TestJoinResolver extends TestQueryRewrite {
+ "ON testdim2.testdim3id = testdim3.id and testdim3.dt = 'latest'",
null, "group by testdim3.id",
null, getWhereForHourly2days("testcube", "c1_testfact2_raw"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
// tests from multiple different chains
query = "select testdim4.name, testdim3id, avg(msr2) from testcube where " + TWO_DAYS_RANGE;
@@ -686,7 +686,7 @@ public class TestJoinResolver extends TestQueryRewrite {
+ " join " + getDbName() + "c1_testdim4tbl testdim4 ON testdim3.testDim4id = testdim4.id and"
+ " testdim4.dt = 'latest'", null, "group by testdim4.name, testdim3.id", null,
getWhereForHourly2days("testcube", "c1_testfact2_raw"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
query = "select citydim.name, testdim4.name, testdim3id, avg(msr2) from testcube where " + TWO_DAYS_RANGE;
hqlQuery = rewrite(query, hconf);
@@ -698,7 +698,7 @@ public class TestJoinResolver extends TestQueryRewrite {
+ " join " + getDbName() + "c1_citytable citydim ON testcube.cityid = citydim.id and citydim.dt = 'latest'"
, null, "group by citydim.name, testdim4.name, testdim3.id", null,
getWhereForHourly2days("testcube", "c1_testfact2_raw"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
// test multi hops
query = "select testdim4.name, avg(msr2) from testcube where " + TWO_DAYS_RANGE;
@@ -709,7 +709,7 @@ public class TestJoinResolver extends TestQueryRewrite {
+ " join " + getDbName() + "c1_testdim4tbl testdim4 ON testdim3.testDim4id = testdim4.id and"
+ " testdim4.dt = 'latest'", null, "group by testdim4.name", null,
getWhereForHourly2days("testcube", "c1_testfact2_raw"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
query = "select testdim4.name, sum(msr2) from testcube where " + TWO_DAYS_RANGE;
hqlQuery = rewrite(query, hconf);
@@ -718,7 +718,7 @@ public class TestJoinResolver extends TestQueryRewrite {
+ " join " + getDbName() + "c1_testdim4tbl testdim4 ON testdim3.testDim4id = testdim4.id and"
+ " testdim4.dt = 'latest'", null, "group by testdim4.name", null,
getWhereForDailyAndHourly2days("testcube", "c1_summary1"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
}
@Test
http://git-wip-us.apache.org/repos/asf/incubator-lens/blob/82553db3/lens-cube/src/test/java/org/apache/lens/cube/parse/TestQueryMetrics.java
----------------------------------------------------------------------
diff --git a/lens-cube/src/test/java/org/apache/lens/cube/parse/TestQueryMetrics.java b/lens-cube/src/test/java/org/apache/lens/cube/parse/TestQueryMetrics.java
index 4304f94..39f70eb 100644
--- a/lens-cube/src/test/java/org/apache/lens/cube/parse/TestQueryMetrics.java
+++ b/lens-cube/src/test/java/org/apache/lens/cube/parse/TestQueryMetrics.java
@@ -46,25 +46,25 @@ public class TestQueryMetrics extends TestQueryRewrite {
Assert.assertTrue(reg.getGauges().keySet().containsAll(Arrays.asList(
"lens.MethodMetricGauge.testCubeRewriteStackName-org.apache.lens.cube.parse.AggregateResolver-ITER-5",
- "lens.MethodMetricGauge.testCubeRewriteStackName-org.apache.lens.cube.parse.AliasReplacer-ITER-2",
+ "lens.MethodMetricGauge.testCubeRewriteStackName-org.apache.lens.cube.parse.AliasReplacer-ITER-1",
"lens.MethodMetricGauge.testCubeRewriteStackName-org.apache.lens.cube.parse.CandidateTableResolver-ITER-10",
"lens.MethodMetricGauge.testCubeRewriteStackName-org.apache.lens.cube.parse.CandidateTableResolver-ITER-4",
- "lens.MethodMetricGauge.testCubeRewriteStackName-org.apache.lens.cube.parse.ColumnResolver-ITER-1",
- "lens.MethodMetricGauge.testCubeRewriteStackName-org.apache.lens.cube.parse.DenormalizationResolver-ITER-16",
+ "lens.MethodMetricGauge.testCubeRewriteStackName-org.apache.lens.cube.parse.ColumnResolver-ITER-0",
+ "lens.MethodMetricGauge.testCubeRewriteStackName-org.apache.lens.cube.parse.DenormalizationResolver-ITER-15",
"lens.MethodMetricGauge.testCubeRewriteStackName-org.apache.lens.cube.parse.DenormalizationResolver-ITER-3",
- "lens.MethodMetricGauge.testCubeRewriteStackName-org.apache.lens.cube.parse.ExpressionResolver-ITER-0",
+ "lens.MethodMetricGauge.testCubeRewriteStackName-org.apache.lens.cube.parse.ExpressionResolver-ITER-16",
+ "lens.MethodMetricGauge.testCubeRewriteStackName-org.apache.lens.cube.parse.ExpressionResolver-ITER-2",
"lens.MethodMetricGauge.testCubeRewriteStackName-org.apache.lens.cube.parse.FieldValidator-ITER-7",
"lens.MethodMetricGauge.testCubeRewriteStackName-org.apache.lens.cube.parse.GroupbyResolver-ITER-6",
"lens.MethodMetricGauge.testCubeRewriteStackName-org.apache.lens.cube.parse.JoinResolver-ITER-8",
"lens.MethodMetricGauge.testCubeRewriteStackName-org.apache.lens.cube.parse.LeastPartitionResolver-ITER-17",
"lens.MethodMetricGauge.testCubeRewriteStackName-org.apache.lens.cube.parse.LightestDimensionResolver-ITER-19",
- "lens.MethodMetricGauge.testCubeRewriteStackName-org.apache.lens.cube.parse.LightestFactResolver-ITER-14",
"lens.MethodMetricGauge.testCubeRewriteStackName-org.apache.lens.cube.parse.LightestFactResolver-ITER-18",
"lens.MethodMetricGauge.testCubeRewriteStackName-org.apache.lens.cube.parse.MaxCoveringFactResolver-ITER-13",
"lens.MethodMetricGauge.testCubeRewriteStackName-org.apache.lens.cube.parse.StorageTableResolver-ITER-11",
"lens.MethodMetricGauge.testCubeRewriteStackName-org.apache.lens.cube.parse.StorageTableResolver-ITER-12",
- "lens.MethodMetricGauge.testCubeRewriteStackName-org.apache.lens.cube.parse.StorageTableResolver-ITER-15",
+ "lens.MethodMetricGauge.testCubeRewriteStackName-org.apache.lens.cube.parse.StorageTableResolver-ITER-14",
"lens.MethodMetricGauge.testCubeRewriteStackName-org.apache.lens.cube.parse.TimerangeResolver-ITER-9")
- ));
+ ), reg.getGauges().keySet().toString());
}
}
http://git-wip-us.apache.org/repos/asf/incubator-lens/blob/82553db3/lens-cube/src/test/resources/log4j.properties
----------------------------------------------------------------------
diff --git a/lens-cube/src/test/resources/log4j.properties b/lens-cube/src/test/resources/log4j.properties
index f514648..a87fd8f 100644
--- a/lens-cube/src/test/resources/log4j.properties
+++ b/lens-cube/src/test/resources/log4j.properties
@@ -18,10 +18,10 @@
#
# Configuration for loggers
-log4j.rootLogger=ERROR, STDOUT, TEST_LOG_FILE
+log4j.rootLogger=INFO,TEST_LOG_FILE
-log4j.logger.org.apache.lens=WARN, STDOUT, TEST_LOG_FILE
-log4j.additivity.org.apache.lens=false
+#log4j.logger.org.apache.lens=INFO, TEST_LOG_FILE
+#log4j.additivity.org.apache.lens=false
# Configuration for appenders
log4j.appender.STDOUT=org.apache.log4j.ConsoleAppender
@@ -33,4 +33,4 @@ log4j.appender.TEST_LOG_FILE=org.apache.log4j.RollingFileAppender
log4j.appender.TEST_LOG_FILE.File=target/test.log
log4j.appender.TEST_LOG_FILE.layout=org.apache.log4j.PatternLayout
log4j.appender.TEST_LOG_FILE.layout.ConversionPattern=%d [%t] %-5p %c - %m%n
-log4j.appender.TEST_LOG_FILE.Threshold=WARN
+log4j.appender.TEST_LOG_FILE.Threshold=INFO
[2/3] incubator-lens git commit: LENS-174: Cube rewriter changes to
support multiple expressions
Posted by pr...@apache.org.
http://git-wip-us.apache.org/repos/asf/incubator-lens/blob/82553db3/lens-cube/src/main/java/org/apache/lens/cube/parse/FieldValidator.java
----------------------------------------------------------------------
diff --git a/lens-cube/src/main/java/org/apache/lens/cube/parse/FieldValidator.java b/lens-cube/src/main/java/org/apache/lens/cube/parse/FieldValidator.java
index fd8568f..60a767d 100644
--- a/lens-cube/src/main/java/org/apache/lens/cube/parse/FieldValidator.java
+++ b/lens-cube/src/main/java/org/apache/lens/cube/parse/FieldValidator.java
@@ -25,6 +25,7 @@ import org.apache.lens.cube.error.FieldsCannotBeQueriedTogetherException;
import org.apache.lens.cube.metadata.CubeInterface;
import org.apache.lens.cube.metadata.DerivedCube;
import org.apache.lens.cube.metadata.ReferencedDimAtrribute;
+import org.apache.lens.cube.parse.ExpressionResolver.ExprSpecContext;
import org.apache.hadoop.hive.ql.metadata.HiveException;
import org.apache.hadoop.hive.ql.parse.ASTNode;
@@ -59,6 +60,7 @@ public class FieldValidator implements ContextRewriter {
// dim attributes and chained source columns should only come from WHERE and GROUP BY ASTs
Set<String> queriedDimAttrs = new LinkedHashSet<String>();
Set<String> queriedMsrs = new LinkedHashSet<String>(cubeql.getQueriedMsrs());
+ queriedMsrs.addAll(getMeasuresFromExprMeasures(cubeql));
Set<String> chainedSrcColumns = new HashSet<String>();
Set<String> nonQueryableFields = new LinkedHashSet<String>();
@@ -102,6 +104,22 @@ public class FieldValidator implements ContextRewriter {
}
}
}
+ private Set<String> getMeasuresFromExprMeasures(CubeQueryContext cubeql) {
+ Set<String> exprMeasures = new HashSet<String>();
+ String cubeAlias = cubeql.getAliasForTableName(cubeql.getCube().getName());
+ for (String expr : cubeql.getQueriedExprsWithMeasures()) {
+ for (ExprSpecContext esc : cubeql.getExprCtx().getExpressionContext(expr, cubeAlias).getAllExprs()) {
+ if (esc.getTblAliasToColumns().get(cubeAlias) != null) {
+ for (String cubeCol : esc.getTblAliasToColumns().get(cubeAlias)) {
+ if (cubeql.getCube().getMeasureByName(cubeCol) != null) {
+ exprMeasures.add(cubeCol);
+ }
+ }
+ }
+ }
+ }
+ return exprMeasures;
+ }
// Traverse parse tree to figure out dimension attributes of the cubes and join chains
// present in the AST.
@@ -132,21 +150,30 @@ public class FieldValidator implements ContextRewriter {
// this 'tabName' is a join chain, so add all source columns
chainSourceColumns.addAll(cubeql.getJoinchains().get(tabName).getSourceColumns());
nonQueryableColumns.add(tabName + "." + colName);
- } else if (tabName.equalsIgnoreCase(cubeql.getAliasForTableName(cube.getName()))
- && cube.getDimAttributeNames().contains(colName)) {
- // Alternatively, check if this is a dimension attribute, if yes add it to the dim attribute set
- // and non queryable fields set
- nonQueryableColumns.add(colName);
-
- // If this is a referenced dim attribute leading to a chain, then instead of adding this
- // column, we add the source columns of the chain.
- if (cube.getDimAttributeByName(colName) instanceof ReferencedDimAtrribute
- && ((ReferencedDimAtrribute) cube.getDimAttributeByName(colName)).isChainedColumn()) {
- ReferencedDimAtrribute rdim = (ReferencedDimAtrribute) cube.getDimAttributeByName(colName);
- chainSourceColumns.addAll(cube.getChainByName(rdim.getChainName()).getSourceColumns());
- } else {
- // This is a dim attribute, needs to be validated
- dimAttributes.add(colName);
+ } else if (tabName.equalsIgnoreCase(cubeql.getAliasForTableName(cube.getName()))) {
+ if (cube.getDimAttributeNames().contains(colName)) {
+ // Alternatively, check if this is a dimension attribute, if yes add it to the dim attribute set
+ // and non queryable fields set
+ nonQueryableColumns.add(colName);
+
+ // If this is a referenced dim attribute leading to a chain, then instead of adding this
+ // column, we add the source columns of the chain.
+ if (cube.getDimAttributeByName(colName) instanceof ReferencedDimAtrribute
+ && ((ReferencedDimAtrribute) cube.getDimAttributeByName(colName)).isChainedColumn()) {
+ ReferencedDimAtrribute rdim = (ReferencedDimAtrribute) cube.getDimAttributeByName(colName);
+ chainSourceColumns.addAll(cube.getChainByName(rdim.getChainName()).getSourceColumns());
+ } else {
+ // This is a dim attribute, needs to be validated
+ dimAttributes.add(colName);
+ }
+ } else if (cube.getExpressionNames().contains(colName)) {
+ if (cubeql.getQueriedExprs().contains(colName)) {
+ for (ASTNode exprNode : cubeql.getExprCtx().getExpressionContext(colName,
+ cubeql.getAliasForTableName(cubeql.getCube().getName())).getAllASTNodes()) {
+ findDimAttrsAndChainSourceColumns(cubeql, exprNode, dimAttributes, chainSourceColumns,
+ nonQueryableColumns);
+ }
+ }
}
}
}
http://git-wip-us.apache.org/repos/asf/incubator-lens/blob/82553db3/lens-cube/src/main/java/org/apache/lens/cube/parse/JoinResolver.java
----------------------------------------------------------------------
diff --git a/lens-cube/src/main/java/org/apache/lens/cube/parse/JoinResolver.java b/lens-cube/src/main/java/org/apache/lens/cube/parse/JoinResolver.java
index 17d2eed..a760599 100644
--- a/lens-cube/src/main/java/org/apache/lens/cube/parse/JoinResolver.java
+++ b/lens-cube/src/main/java/org/apache/lens/cube/parse/JoinResolver.java
@@ -1016,7 +1016,7 @@ class JoinResolver implements ContextRewriter {
for (JoinChain chain : cubeql.getJoinchains().values()) {
for (String dimName : chain.getIntermediateDimensions()) {
- cubeql.addOptionalDimTable(dimName, null, null, true);
+ cubeql.addOptionalDimTable(dimName, null, true, null);
}
}
@@ -1122,7 +1122,7 @@ class JoinResolver implements ContextRewriter {
for (TableRelationship rel : joinPath.getEdges()) {
// Add the joined tables to the queries table sets so that they are
// resolved in candidate resolver
- cubeql.addOptionalDimTable(rel.getToTable().getName(), null, null, required);
+ cubeql.addOptionalDimTable(rel.getToTable().getName(), null, required, null);
}
}
}
http://git-wip-us.apache.org/repos/asf/incubator-lens/blob/82553db3/lens-cube/src/main/java/org/apache/lens/cube/parse/TimerangeResolver.java
----------------------------------------------------------------------
diff --git a/lens-cube/src/main/java/org/apache/lens/cube/parse/TimerangeResolver.java b/lens-cube/src/main/java/org/apache/lens/cube/parse/TimerangeResolver.java
index 936faa1..820d77d 100644
--- a/lens-cube/src/main/java/org/apache/lens/cube/parse/TimerangeResolver.java
+++ b/lens-cube/src/main/java/org/apache/lens/cube/parse/TimerangeResolver.java
@@ -225,7 +225,6 @@ class TimerangeResolver implements ContextRewriter {
}
} // End time range loop
} // End column loop
-
}
http://git-wip-us.apache.org/repos/asf/incubator-lens/blob/82553db3/lens-cube/src/main/java/org/apache/lens/cube/parse/TrackQueriedColumns.java
----------------------------------------------------------------------
diff --git a/lens-cube/src/main/java/org/apache/lens/cube/parse/TrackQueriedColumns.java b/lens-cube/src/main/java/org/apache/lens/cube/parse/TrackQueriedColumns.java
new file mode 100644
index 0000000..b65ac26
--- /dev/null
+++ b/lens-cube/src/main/java/org/apache/lens/cube/parse/TrackQueriedColumns.java
@@ -0,0 +1,27 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.lens.cube.parse;
+
+import java.util.Map;
+import java.util.Set;
+
+interface TrackQueriedColumns {
+ Map<String, Set<String>> getTblAliasToColumns();
+ void addColumnsQueried(String alias, String column);
+}
http://git-wip-us.apache.org/repos/asf/incubator-lens/blob/82553db3/lens-cube/src/test/java/org/apache/lens/cube/parse/CubeTestSetup.java
----------------------------------------------------------------------
diff --git a/lens-cube/src/test/java/org/apache/lens/cube/parse/CubeTestSetup.java b/lens-cube/src/test/java/org/apache/lens/cube/parse/CubeTestSetup.java
index 5c776cc..1fb8556 100644
--- a/lens-cube/src/test/java/org/apache/lens/cube/parse/CubeTestSetup.java
+++ b/lens-cube/src/test/java/org/apache/lens/cube/parse/CubeTestSetup.java
@@ -29,6 +29,7 @@ import java.text.SimpleDateFormat;
import java.util.*;
import org.apache.lens.cube.metadata.*;
+import org.apache.lens.cube.metadata.ExprColumn.ExprSpec;
import org.apache.lens.cube.metadata.timeline.EndsAndHolesPartitionTimeline;
import org.apache.lens.cube.metadata.timeline.PartitionTimeline;
import org.apache.lens.cube.metadata.timeline.StoreAllPartitionTimeline;
@@ -648,17 +649,43 @@ public class CubeTestSetup {
paths.add(new TableReference("hourdim", "id"));
timeChain.addPath(paths);
joinchains.add(timeChain);
+ joinchains.add(new JoinChain("cubeState", "cube-state", "state thru cube") {
+ {
+ addPath(new ArrayList<TableReference>() {
+ {
+ add(new TableReference("basecube", "stateid"));
+ add(new TableReference("statedim", "id"));
+ }
+ });
+ }
+ });
exprs = new HashSet<ExprColumn>();
exprs.add(new ExprColumn(new FieldSchema("avgmsr", "double", "avg measure"), "Avg Msr", "avg(msr1 + msr2)"));
+ exprs.add(new ExprColumn(new FieldSchema("msr5", "double", "materialized in some facts"), "Fifth Msr",
+ "msr2 + msr3"));
+ exprs.add(new ExprColumn(new FieldSchema("equalsums", "double", "sums are equals"), "equalsums",
+ new ExprSpec("msr3 + msr4", null, null), new ExprSpec("(msr3 + msr2)/100", null, null)));
+ exprs.add(new ExprColumn(new FieldSchema("roundedmsr1", "double", "rounded measure1"), "Rounded msr1",
+ "round(msr1/1000)"));
exprs.add(new ExprColumn(new FieldSchema("roundedmsr2", "double", "rounded measure2"), "Rounded msr2",
"round(msr2/1000)"));
+ exprs.add(new ExprColumn(new FieldSchema("nestedexpr", "double", "nested expr"), "Nested expr",
+ new ExprSpec("avg(roundedmsr2)", null, null), new ExprSpec("avg(equalsums)", null, null),
+ new ExprSpec("case when substrexpr = 'xyz' then avg(msr5) when substrexpr = 'abc' then avg(msr4)/100 end",
+ null, null)));
+ exprs.add(new ExprColumn(new FieldSchema("nestedExprWithTimes", "double", "nested expr"), "Nested expr",
+ new ExprSpec("avg(roundedmsr2)", null, null), new ExprSpec("avg(equalsums)", null, null),
+ new ExprSpec("case when substrexpr = 'xyz' then avg(msr5) when substrexpr = 'abc' then avg(msr4)/100 end",
+ NOW, null), new ExprSpec("avg(newmeasure)", null, null)));
exprs.add(new ExprColumn(new FieldSchema("msr6", "bigint", "sixth measure"), "Measure6",
"sum(msr2) + max(msr3)/ count(msr4)"));
exprs.add(new ExprColumn(new FieldSchema("booleancut", "boolean", "a boolean expression"), "Boolean cut",
"dim1 != 'x' AND dim2 != 10 "));
exprs.add(new ExprColumn(new FieldSchema("substrexpr", "string", "a sub-string expression"), "Substr expr",
- "substr(dim1, 3)"));
+ new ExprSpec("substr(dim1, 3))", null, null), new ExprSpec("substr(ascii(testdim2.name), 3)", null, null)));
+ exprs.add(new ExprColumn(new FieldSchema("substrexprdim2", "string", "a sub-string expression"), "Substr expr",
+ new ExprSpec("substr(dim2, 3))", null, null), new ExprSpec("substr(ascii(testdim2.name), 3)", null, null)));
exprs.add(new ExprColumn(new FieldSchema("indiasubstr", "boolean", "nested sub string expression"), "Nested expr",
"substrexpr = 'INDIA'"));
exprs.add(new ExprColumn(new FieldSchema("refexpr", "string", "expression which facts and dimensions"),
@@ -669,6 +696,12 @@ public class CubeTestSetup {
"new measure expr", "myfun(newmeasure)"));
exprs.add(new ExprColumn(new FieldSchema("cityAndState", "String", "city and state together"), "City and State",
"concat(citydim.name, \":\", statedim.name)"));
+ exprs.add(new ExprColumn(new FieldSchema("cityStateName", "String", "city state"), "City State",
+ "concat('CityState:', citydim.statename)"));
+ exprs.add(new ExprColumn(new FieldSchema("cubeStateName", "String", "statename from cubestate"), "CubeState Name",
+ "substr(cubestate.name, 5)"));
+ exprs.add(new ExprColumn(new FieldSchema("substrdim2big1", "String", "substr of dim2big1"), "dim2big1 substr",
+ "substr(dim2big1, 5)"));
Map<String, String> cubeProperties = new HashMap<String, String>();
cubeProperties.put(MetastoreUtil.getCubeTimedDimensionListKey(TEST_CUBE_NAME),
@@ -996,6 +1029,7 @@ public class CubeTestSetup {
for (CubeMeasure measure : cubeMeasures) {
factColumns.add(measure.getColumn());
}
+ factColumns.add(new FieldSchema("msr5", "double", "msr5"));
// add dimensions of the cube
factColumns.add(new FieldSchema("zipcode", "int", "zip"));
@@ -1252,7 +1286,9 @@ public class CubeTestSetup {
String factName = "testFact2";
List<FieldSchema> factColumns = new ArrayList<FieldSchema>(cubeMeasures.size());
for (CubeMeasure measure : cubeMeasures) {
- factColumns.add(measure.getColumn());
+ if (!measure.getName().equals("msr4")) {
+ factColumns.add(measure.getColumn());
+ }
}
// add dimensions of the cube
@@ -1427,7 +1463,11 @@ public class CubeTestSetup {
dimProps.put(MetastoreUtil.getDimTimedDimensionKey("citydim"), TestCubeMetastoreClient.getDatePartitionKey());
Set<ExprColumn> exprs = new HashSet<ExprColumn>();
exprs.add(new ExprColumn(new FieldSchema("CityAddress", "string", "city with state and city and zip"),
- "City Address", "concat(citydim.name, \":\", statedim.name, \":\", countrydim.name, \":\", zipdim.code)"));
+ "City Address",
+ new ExprSpec("concat(citydim.name, \":\", statedim.name, \":\", countrydim.name, \":\", zipdim.code)", null,
+ null), new ExprSpec("concat(citydim.name, \":\", statedim.name)", null, null)));
+ exprs.add(new ExprColumn(new FieldSchema("CityState", "string", "city's state"),
+ "City State", new ExprSpec("concat(citydim.name, \":\", citydim.statename)", null, null)));
Dimension cityDim = new Dimension("citydim", cityAttrs, exprs, dimProps, 0L);
client.createDimension(cityDim);
http://git-wip-us.apache.org/repos/asf/incubator-lens/blob/82553db3/lens-cube/src/test/java/org/apache/lens/cube/parse/FieldsCannotBeQueriedTogetherTest.java
----------------------------------------------------------------------
diff --git a/lens-cube/src/test/java/org/apache/lens/cube/parse/FieldsCannotBeQueriedTogetherTest.java b/lens-cube/src/test/java/org/apache/lens/cube/parse/FieldsCannotBeQueriedTogetherTest.java
index 1e0dbf8..0a37c3d 100644
--- a/lens-cube/src/test/java/org/apache/lens/cube/parse/FieldsCannotBeQueriedTogetherTest.java
+++ b/lens-cube/src/test/java/org/apache/lens/cube/parse/FieldsCannotBeQueriedTogetherTest.java
@@ -46,6 +46,7 @@ public class FieldsCannotBeQueriedTogetherTest extends TestQueryRewrite {
@BeforeClass
public void beforeClassFieldsCannotBeQueriedTogetherTest() {
conf.setBoolean(CubeQueryConfUtil.ENABLE_SELECT_TO_GROUPBY, true);
+ conf.setBoolean(CubeQueryConfUtil.DISABLE_AGGREGATE_RESOLVER, false);
}
@Test
@@ -62,6 +63,45 @@ public class FieldsCannotBeQueriedTogetherTest extends TestQueryRewrite {
}
@Test
+ public void testQueryWithDimensionAndMeasureInExpression() throws SemanticException, ParseException, LensException {
+
+ /* If all the queried dimensions are present in a derived cube, and one of the queried measure is not present in
+ the same derived cube, then query shall be disallowed.
+
+ dim2 and roundedmsr1 (expression over msr1) are not present in the same derived cube, hence query shall be
+ disallowed with appropriate exception. */
+
+ testFieldsCannotBeQueriedTogetherError("select dim2, sum(roundedmsr1) from basecube where " + TWO_DAYS_RANGE,
+ Arrays.asList("dim2", "msr1"));
+ }
+
+ @Test
+ public void testQueryWithDimensionInExpressionAndMeasure() throws SemanticException, ParseException, LensException {
+
+ /* If all the queried dimensions are present in a derived cube, and one of the queried measure is not present in
+ the same derived cube, then query shall be disallowed.
+
+ substrexprdim2( an expresison over dim2) and msr1 are not present in the same derived cube, hence query shall be
+ disallowed with appropriate exception. */
+
+ testFieldsCannotBeQueriedTogetherError("select substrexprdim2, SUM(msr1) from basecube where " + TWO_DAYS_RANGE,
+ Arrays.asList("dim2", "msr1"));
+ }
+
+ @Test
+ public void testQueryWithDimensionAndMeasureInExpressions() throws SemanticException, ParseException, LensException {
+
+ /* If all the queried dimensions are present in a derived cube, and one of the queried measure is not present in
+ the same derived cube, then query shall be disallowed.
+
+ substrexprdim2( an expresison over dim2) and roundedmsr1 (an expression over msr1) are not present in the same
+ derived cube, hence query shall be disallowed with appropriate exception. */
+
+ testFieldsCannotBeQueriedTogetherError("select substrexprdim2, sum(roundedmsr1) from basecube where "
+ + TWO_DAYS_RANGE, Arrays.asList("dim2", "msr1"));
+ }
+
+ @Test
public void testQueryWithChainReferencedDimensionAttributeAndMeasure() throws SemanticException, ParseException,
LensException {
@@ -78,6 +118,38 @@ public class FieldsCannotBeQueriedTogetherTest extends TestQueryRewrite {
}
@Test
+ public void testQueryWithChainReferencedDimensionAttributeAndExprMeasure() throws SemanticException, ParseException,
+ LensException {
+
+ /* In this query a dimension attribute referenced through join chain name is used in select. If the
+ source column for such a dimension attribute and the queried measure are not present in the same derived cube,
+ then query shall be disallowed.
+
+ cityState.name is a dimension attribute used in select statement and referenced through join chain name citystate.
+ It is queryable through chain source column cityid. cityid and roundedmsr1 (an expression over msr1) are not present
+ in the same derived cube, hence query shall be disallowed with appropriate exception. */
+
+ testFieldsCannotBeQueriedTogetherError("select citystate.name, sum(roundedmsr1) from basecube where "
+ + TWO_DAYS_RANGE, Arrays.asList("citystate.name", "msr1"));
+ }
+
+ @Test
+ public void testQueryWithDimExprWithChainRefAndExprMeasure() throws SemanticException, ParseException,
+ LensException {
+
+ /* In this query a dimension attribute referenced through join chain name is used in select. If the
+ source column for such a dimension attribute and the queried measure are not present in the same derived cube,
+ then query shall be disallowed.
+
+ cubestate.name is a dimension attribute used in select statement and referenced through join chain name citystate.
+ It is queryable through chain source column cityid. cityid and roundedmsr1 (an expression over msr1) are not present
+ in the same derived cube, hence query shall be disallowed with appropriate exception. */
+
+ testFieldsCannotBeQueriedTogetherError("select cubestateName, sum(roundedmsr1) from basecube where "
+ + TWO_DAYS_RANGE, Arrays.asList("cubestate.name", "msr1"));
+ }
+
+ @Test
public void testQueryWithMeasureAndChainReferencedDimAttributeInFilter() throws SemanticException, ParseException,
LensException {
@@ -90,10 +162,42 @@ public class FieldsCannotBeQueriedTogetherTest extends TestQueryRewrite {
shall be disallowed with appropriate exception. */
testFieldsCannotBeQueriedTogetherError("select SUM(msr1) from basecube where cityState.name = 'foo' and "
+ + TWO_DAYS_RANGE, Arrays.asList("citystate.name", "msr1"));
+ }
+
+ @Test
+ public void testQueryWithExprMeasureAndChainReferencedDimAttributeInFilter() throws SemanticException, ParseException,
+ LensException {
+
+ /* In this query a dimension attribute referenced through join chain name is used in filter. If the
+ source column for such a dimension attribute and the queried measure are not present in the same derived cube,
+ then query shall be disallowed.
+
+ cityState.name is a dimension attribute used in where clause(filter) and referenced through join chain name. It is
+ queryable through chain source column cityid. cityid and roundedmsr1( expression over msr1) are not present in the
+ same derived cube, hence query shall be disallowed with appropriate exception. */
+
+ testFieldsCannotBeQueriedTogetherError("select sum(roundedmsr1) from basecube where cityState.name = 'foo' and "
+ TWO_DAYS_RANGE, Arrays.asList("citystate.name", "msr1"));
}
@Test
+ public void testQueryWithExprMeasureAndDimExprWithChainRefInFilter() throws SemanticException, ParseException,
+ LensException {
+
+ /* In this query a dimension attribute referenced through join chain name is used in filter. If the
+ source column for such a dimension attribute and the queried measure are not present in the same derived cube,
+ then query shall be disallowed.
+
+ cubestate.name is a dimension attribute used in where clause(filter) and referenced through join chain name. It is
+ queryable through chain source column cityid. cityid and roundedmsr1( expression over msr1) are not present in the
+ same derived cube, hence query shall be disallowed with appropriate exception. */
+
+ testFieldsCannotBeQueriedTogetherError("select sum(roundedmsr1) from basecube where cubestatename = 'foo' and "
+ + TWO_DAYS_RANGE, Arrays.asList("cubestate.name", "msr1"));
+ }
+
+ @Test
public void testQueryWithOnlyMeasure() throws ParseException, SemanticException, LensException {
/* A query which contains only measure should pass, if the measure is present in some derived cube.
@@ -103,6 +207,16 @@ public class FieldsCannotBeQueriedTogetherTest extends TestQueryRewrite {
}
@Test
+ public void testQueryWithOnlyExprMeasure() throws ParseException, SemanticException, LensException {
+
+ /* A query which contains only measure should pass, if the measure is present in some derived cube.
+ roundedmsr1 ( an expression over msr1) is present in one of the derived cubes, hence query shall pass without
+ any exception. */
+
+ rewrite("select sum(roundedmsr1) from basecube where " + TWO_DAYS_RANGE, conf);
+ }
+
+ @Test
public void testQueryWithMeasureAndChainReferencedDimAttributeInCaseStatement() throws ParseException,
SemanticException, LensException {
@@ -127,6 +241,17 @@ public class FieldsCannotBeQueriedTogetherTest extends TestQueryRewrite {
}
@Test
+ public void testQueryWithDimExpressionssNotInSameDerviedCube()
+ throws ParseException, SemanticException, LensException {
+
+ /* dim2, source columns of cubestate and countryid are not present in the same derived cube, hence query should be
+ * disallowed */
+
+ testFieldsCannotBeQueriedTogetherError("select substrexprdim2, cubeStateName, countryid, SUM(msr2) from basecube"
+ + " where " + TWO_DAYS_RANGE, Arrays.asList("countryid", "dim2", "cubestate.name"));
+ }
+
+ @Test
public void testQueryWithMeasureNotInAnyDerviedCube() throws ParseException, SemanticException, LensException {
/* newmeasure is not present in any derived cube, hence the query should be disallowed. */
@@ -136,6 +261,15 @@ public class FieldsCannotBeQueriedTogetherTest extends TestQueryRewrite {
}
@Test
+ public void testQueryWithExprMeasureNotInAnyDerviedCube() throws ParseException, SemanticException, LensException {
+
+ /* newexpr : expression over newmeasure is not present in any derived cube, hence the query should be disallowed. */
+
+ testFieldsCannotBeQueriedTogetherError("select newexpr from basecube where "
+ + TWO_DAYS_RANGE, Arrays.asList("newmeasure"));
+ }
+
+ @Test
public void testQueryWithReferencedDimAttributeAndMeasure() throws SemanticException, ParseException,
LensException {
@@ -157,8 +291,8 @@ public class FieldsCannotBeQueriedTogetherTest extends TestQueryRewrite {
try {
- rewrite(testQuery, conf);
- fail("Expected FieldsCannotBeQueriedTogetherException but it didn't come");
+ String hqlQuery = rewrite(testQuery, conf);
+ fail("Expected FieldsCannotBeQueriedTogetherException but it didn't come, rewrittenQuery:" + hqlQuery);
} catch(FieldsCannotBeQueriedTogetherException actualException) {
SortedSet<String> expectedFields = new TreeSet<String>(conflictingFields);
http://git-wip-us.apache.org/repos/asf/incubator-lens/blob/82553db3/lens-cube/src/test/java/org/apache/lens/cube/parse/TestBaseCubeQueries.java
----------------------------------------------------------------------
diff --git a/lens-cube/src/test/java/org/apache/lens/cube/parse/TestBaseCubeQueries.java b/lens-cube/src/test/java/org/apache/lens/cube/parse/TestBaseCubeQueries.java
index 2fd0a46..53996c4 100644
--- a/lens-cube/src/test/java/org/apache/lens/cube/parse/TestBaseCubeQueries.java
+++ b/lens-cube/src/test/java/org/apache/lens/cube/parse/TestBaseCubeQueries.java
@@ -78,7 +78,7 @@ public class TestBaseCubeQueries extends TestQueryRewrite {
String regexp = String.format(CandidateTablePruneCause.CandidateTablePruneCode.COLUMN_NOT_FOUND.errorFormat,
"Column Sets: (.*?)", "queriable together");
Matcher matcher = Pattern.compile(regexp).matcher(pruneCauses.getBrief());
- assertTrue(matcher.matches());
+ assertTrue(matcher.matches(), pruneCauses.getBrief());
assertEquals(matcher.groupCount(), 1);
String columnSetsStr = matcher.group(1);
assertNotEquals(columnSetsStr.indexOf("stateid"), -1);
@@ -101,19 +101,19 @@ public class TestBaseCubeQueries extends TestQueryRewrite {
String expected =
getExpectedQuery(cubeName, "select basecube.dim1, SUM(basecube.msr1) FROM ", null, " group by basecube.dim1",
getWhereForHourly2days(cubeName, "C1_testfact1_raw_base"));
- compareQueries(expected, hqlQuery);
+ compareQueries(hqlQuery, expected);
hqlQuery = rewrite("select dim1, SUM(msr1), msr2 from basecube" + " where " + TWO_DAYS_RANGE, conf);
expected =
getExpectedQuery(cubeName, "select basecube.dim1, SUM(basecube.msr1), basecube.msr2 FROM ", null,
" group by basecube.dim1", getWhereForHourly2days(cubeName, "C1_testfact1_raw_base"));
- compareQueries(expected, hqlQuery);
+ compareQueries(hqlQuery, expected);
hqlQuery = rewrite("select dim1, roundedmsr2 from basecube" + " where " + TWO_DAYS_RANGE, conf);
expected =
getExpectedQuery(cubeName, "select basecube.dim1, round(sum(basecube.msr2)/1000) FROM ", null,
" group by basecube.dim1", getWhereForDailyAndHourly2days(cubeName, "C1_testFact1_BASE"));
- compareQueries(expected, hqlQuery);
+ compareQueries(hqlQuery, expected);
hqlQuery =
rewrite("select booleancut, msr2 from basecube" + " where " + TWO_DAYS_RANGE + " and substrexpr != 'XYZ'", conf);
@@ -122,13 +122,13 @@ public class TestBaseCubeQueries extends TestQueryRewrite {
+ " sum(basecube.msr2) FROM ", null, " and substr(basecube.dim1, 3) != 'XYZ' "
+ "group by basecube.dim1 != 'x' AND basecube.dim2 != 10",
getWhereForHourly2days(cubeName, "C1_testfact1_raw_base"));
- compareQueries(expected, hqlQuery);
+ compareQueries(hqlQuery, expected);
hqlQuery = rewrite("select dim1, msr12 from basecube" + " where " + TWO_DAYS_RANGE, conf);
expected =
getExpectedQuery(cubeName, "select basecube.dim1, sum(basecube.msr12) FROM ", null, " group by basecube.dim1",
getWhereForDailyAndHourly2days(cubeName, "C1_testFact2_BASE"));
- compareQueries(expected, hqlQuery);
+ compareQueries(hqlQuery, expected);
}
@Test
@@ -138,30 +138,33 @@ public class TestBaseCubeQueries extends TestQueryRewrite {
getExpectedQuery(cubeName, "select sum(basecube.msr12) msr12 FROM ", null,
null, getWhereForDailyAndHourly2days(cubeName, "C1_testFact2_BASE"));
String expected2 =
- getExpectedQuery(cubeName, "select round(sum(basecube.msr2)/1000) msr2 FROM ", null,
+ getExpectedQuery(cubeName, "select round(sum(basecube.msr2)/1000) roundedmsr2 FROM ", null,
null, getWhereForDailyAndHourly2days(cubeName, "C1_testFact1_BASE"));
TestCubeRewriter.compareContains(expected1, hqlQuery);
TestCubeRewriter.compareContains(expected2, hqlQuery);
String lower = hqlQuery.toLowerCase();
- assertTrue(lower.startsWith("select mq2.msr2 msr2, mq1.msr12 msr12 from ")
- || lower.startsWith("select mq1.msr2 msr2, mq2.msr12 msr12 from "));
- assertTrue(lower.contains("mq1 full outer join") && lower.endsWith("mq2"));
- assertFalse(lower.contains("<=>"));
+ assertTrue(lower.startsWith("select mq2.roundedmsr2 roundedmsr2, mq1.msr12 msr12 from ")
+ || lower.startsWith("select mq1.roundedmsr2 roundedmsr2, mq2.msr12 msr12 from "), hqlQuery);
+ assertTrue(lower.contains("mq1 full outer join") && lower.endsWith("mq2"), hqlQuery);
+ assertFalse(lower.contains("<=>"), hqlQuery);
hqlQuery = rewrite("select dim1, roundedmsr2, msr12 from basecube" + " where " + TWO_DAYS_RANGE, conf);
expected1 =
getExpectedQuery(cubeName, "select basecube.dim1 dim1, sum(basecube.msr12) msr12 FROM ", null,
" group by basecube.dim1", getWhereForDailyAndHourly2days(cubeName, "C1_testFact2_BASE"));
expected2 =
- getExpectedQuery(cubeName, "select basecube.dim1 dim1, round(sum(basecube.msr2)/1000) msr2 FROM ", null,
+ getExpectedQuery(cubeName, "select basecube.dim1 dim1, round(sum(basecube.msr2)/1000) roundedmsr2 FROM ", null,
" group by basecube.dim1", getWhereForDailyAndHourly2days(cubeName, "C1_testFact1_BASE"));
TestCubeRewriter.compareContains(expected1, hqlQuery);
TestCubeRewriter.compareContains(expected2, hqlQuery);
lower = hqlQuery.toLowerCase();
- assertTrue(lower.startsWith("select coalesce(mq1.dim1, mq2.dim1) dim1, mq2.msr2 msr2, mq1.msr12 msr12 from ")
- || lower.startsWith("select coalesce(mq1.dim1, mq2.dim1) dim1, mq1.msr2 msr2, mq2.msr12 msr12 from "));
+ assertTrue(
+ lower.startsWith("select coalesce(mq1.dim1, mq2.dim1) dim1, mq2.roundedmsr2 roundedmsr2, mq1.msr12 msr12 from ")
+ || lower.startsWith("select coalesce(mq1.dim1, mq2.dim1) dim1, mq1.roundedmsr2 roundedmsr2, mq2.msr12 msr12"
+ + " from "), hqlQuery);
- assertTrue(hqlQuery.contains("mq1 full outer join ") && hqlQuery.endsWith("mq2 on mq1.dim1 <=> mq2.dim1"));
+ assertTrue(hqlQuery.contains("mq1 full outer join ") && hqlQuery.endsWith("mq2 on mq1.dim1 <=> mq2.dim1"),
+ hqlQuery);
// columns in select interchanged
hqlQuery = rewrite("select dim1, msr12, roundedmsr2 from basecube" + " where " + TWO_DAYS_RANGE, conf);
@@ -169,15 +172,18 @@ public class TestBaseCubeQueries extends TestQueryRewrite {
getExpectedQuery(cubeName, "select basecube.dim1 dim1, sum(basecube.msr12) msr12 FROM ", null,
" group by basecube.dim1", getWhereForDailyAndHourly2days(cubeName, "C1_testFact2_BASE"));
expected2 =
- getExpectedQuery(cubeName, "select basecube.dim1 dim1, round(sum(basecube.msr2)/1000) msr2 FROM ", null,
+ getExpectedQuery(cubeName, "select basecube.dim1 dim1, round(sum(basecube.msr2)/1000) roundedmsr2 FROM ", null,
" group by basecube.dim1", getWhereForDailyAndHourly2days(cubeName, "C1_testFact1_BASE"));
TestCubeRewriter.compareContains(expected1, hqlQuery);
TestCubeRewriter.compareContains(expected2, hqlQuery);
lower = hqlQuery.toLowerCase();
- assertTrue(lower.startsWith("select coalesce(mq1.dim1, mq2.dim1) dim1, mq2.msr12 msr12, mq1.msr2 msr2 from ")
- || lower.startsWith("select coalesce(mq1.dim1, mq2.dim1) dim1, mq1.msr12 msr12, mq2.msr2 msr2 from "));
+ assertTrue(
+ lower.startsWith("select coalesce(mq1.dim1, mq2.dim1) dim1, mq2.msr12 msr12, mq1.roundedmsr2 roundedmsr2 from ")
+ || lower.startsWith("select coalesce(mq1.dim1, mq2.dim1) dim1, mq1.msr12 msr12, mq2.roundedmsr2 roundedmsr2"
+ + " from "), hqlQuery);
- assertTrue(hqlQuery.contains("mq1 full outer join ") && hqlQuery.endsWith("mq2 on mq1.dim1 <=> mq2.dim1"));
+ assertTrue(hqlQuery.contains("mq1 full outer join ") && hqlQuery.endsWith("mq2 on mq1.dim1 <=> mq2.dim1"),
+ hqlQuery);
// query with 3 fact tables
hqlQuery = rewrite("select dim1, msr12, roundedmsr2, msr13, msr3 from basecube" + " where " + TWO_DAYS_RANGE, conf);
@@ -186,7 +192,7 @@ public class TestBaseCubeQueries extends TestQueryRewrite {
" group by basecube.dim1", getWhereForDailyAndHourly2days(cubeName, "C1_testFact2_BASE"));
expected2 =
getExpectedQuery(cubeName,
- "select basecube.dim1 dim1, round(sum(basecube.msr2)/1000) msr2, max(basecube.msr3) msr3 FROM ", null,
+ "select basecube.dim1 dim1, round(sum(basecube.msr2)/1000) roundedmsr2, max(basecube.msr3) msr3 FROM ", null,
" group by basecube.dim1", getWhereForDailyAndHourly2days(cubeName, "C1_testFact1_BASE"));
String expected3 =
getExpectedQuery(cubeName, "select basecube.dim1 dim1, max(basecube.msr13) msr13 FROM ", null,
@@ -197,24 +203,24 @@ public class TestBaseCubeQueries extends TestQueryRewrite {
assertTrue(
hqlQuery.toLowerCase().startsWith(
"select coalesce(mq1.dim1, mq2.dim1, mq3.dim1) dim1, mq1.msr12 msr12,"
- + " mq2.msr2 msr2, mq3.msr13 msr13, mq2.msr3 msr3 from ")
+ + " mq2.roundedmsr2 roundedmsr2, mq3.msr13 msr13, mq2.msr3 msr3 from ")
|| hqlQuery.toLowerCase().startsWith(
"select coalesce(mq1.dim1, mq2.dim1, mq3.dim1) dim1, mq1.msr12 msr12,"
- + " mq3.msr2 msr2, mq2.msr13 msr13, mq3.msr3 msr3 from ")
+ + " mq3.roundedmsr2 roundedmsr2, mq2.msr13 msr13, mq3.msr3 msr3 from ")
|| hqlQuery.toLowerCase().startsWith(
"select coalesce(mq1.dim1, mq2.dim1, mq3.dim1) dim1, mq2.msr12 msr12,"
- + " mq1.msr2 msr2, mq3.msr13 msr13, mq1.msr3 msr3 from ")
+ + " mq1.roundedmsr2 roundedmsr2, mq3.msr13 msr13, mq1.msr3 msr3 from ")
|| hqlQuery.toLowerCase().startsWith(
"select coalesce(mq1.dim1, mq2.dim1, mq3.dim1) dim1, mq2.msr12 msr12,"
- + " mq3.msr2 msr2, mq1.msr13 msr13, mq3.msr3 msr3 from ")
+ + " mq3.roundedmsr2 roundedmsr2, mq1.msr13 msr13, mq3.msr3 msr3 from ")
|| hqlQuery.toLowerCase().startsWith(
"select coalesce(mq1.dim1, mq2.dim1, mq3.dim1) dim1, mq3.msr12 msr12,"
- + " mq1.msr2 msr2, mq2.msr13 msr13, mq1.msr3 msr3 from ")
+ + " mq1.roundedmsr2 roundedmsr2, mq2.msr13 msr13, mq1.msr3 msr3 from ")
|| hqlQuery.toLowerCase().startsWith(
"select coalesce(mq1.dim1, mq2.dim1, mq3.dim1) dim1, mq3.msr12 msr12,"
- + " mq2.msr2 msr2, mq1.msr13 msr13, mq2.msr3 msr3 from "));
+ + " mq2.roundedmsr2 roundedmsr2, mq1.msr13 msr13, mq2.msr3 msr3 from "), hqlQuery);
assertTrue(hqlQuery.contains("mq1 full outer join ") && hqlQuery.contains("mq2 full outer join ")
- && hqlQuery.endsWith("mq3 on mq1.dim1 <=> mq2.dim1 AND mq1.dim1 <=> mq3.dim1"));
+ && hqlQuery.endsWith("mq3 on mq1.dim1 <=> mq2.dim1 AND mq1.dim1 <=> mq3.dim1"), hqlQuery);
// query two dim attributes
hqlQuery = rewrite("select dim1, dim11, msr12, roundedmsr2 from basecube" + " where " + TWO_DAYS_RANGE, conf);
@@ -223,19 +229,19 @@ public class TestBaseCubeQueries extends TestQueryRewrite {
null, " group by basecube.dim1", getWhereForDailyAndHourly2days(cubeName, "C1_testFact2_BASE"));
expected2 =
getExpectedQuery(cubeName,
- "select basecube.dim1 dim1, basecube.dim11 dim11, round(sum(basecube.msr2)/1000) msr2 FROM ", null,
+ "select basecube.dim1 dim1, basecube.dim11 dim11, round(sum(basecube.msr2)/1000) roundedmsr2 FROM ", null,
" group by basecube.dim1", getWhereForDailyAndHourly2days(cubeName, "C1_testFact1_BASE"));
TestCubeRewriter.compareContains(expected1, hqlQuery);
TestCubeRewriter.compareContains(expected2, hqlQuery);
assertTrue(hqlQuery.toLowerCase().startsWith(
"select coalesce(mq1.dim1, mq2.dim1) dim1, coalesce(mq1.dim11, mq2.dim11) dim11,"
- + " mq1.msr12 msr12, mq2.msr2 msr2 from ")
+ + " mq1.msr12 msr12, mq2.roundedmsr2 roundedmsr2 from ")
|| hqlQuery.toLowerCase().startsWith(
"select coalesce(mq1.dim1, mq2.dim1) dim1, coalesce(mq1.dim11, mq2.dim11) dim11,"
- + " mq2.msr12 msr12, mq1.msr2 msr2 from "));
+ + " mq2.msr12 msr12, mq1.roundedmsr2 roundedmsr2 from "), hqlQuery);
assertTrue(hqlQuery.contains("mq1 full outer join ")
- && hqlQuery.endsWith("mq2 on mq1.dim1 <=> mq2.dim1 AND mq1.dim11 <=> mq2.dim11"));
+ && hqlQuery.endsWith("mq2 on mq1.dim1 <=> mq2.dim1 AND mq1.dim11 <=> mq2.dim11"), hqlQuery);
// no aggregates in the query
hqlQuery = rewrite("select dim1, msr11, roundedmsr2 from basecube" + " where " + TWO_DAYS_RANGE, conf);
@@ -243,16 +249,17 @@ public class TestBaseCubeQueries extends TestQueryRewrite {
getExpectedQuery(cubeName, "select basecube.dim1 dim1, basecube.msr11 msr11 FROM ", null, null,
getWhereForHourly2days(cubeName, "C1_testfact2_raw_base"));
expected2 =
- getExpectedQuery(cubeName, "select basecube.dim1 dim1, round(basecube.msr2/1000) msr2 FROM ", null, null,
+ getExpectedQuery(cubeName, "select basecube.dim1 dim1, round(basecube.msr2/1000) roundedmsr2 FROM ", null, null,
getWhereForHourly2days(cubeName, "C1_testfact1_raw_base"));
TestCubeRewriter.compareContains(expected1, hqlQuery);
TestCubeRewriter.compareContains(expected2, hqlQuery);
assertTrue(hqlQuery.toLowerCase().startsWith(
- "select coalesce(mq1.dim1, mq2.dim1) dim1, mq1.msr11 msr11, mq2.msr2 msr2 from ")
+ "select coalesce(mq1.dim1, mq2.dim1) dim1, mq1.msr11 msr11, mq2.roundedmsr2 roundedmsr2 from ")
|| hqlQuery.toLowerCase().startsWith(
- "select coalesce(mq1.dim1, mq2.dim1) dim1, mq2.msr11 msr11, mq1.msr2 msr2 from "));
+ "select coalesce(mq1.dim1, mq2.dim1) dim1, mq2.msr11 msr11, mq1.roundedmsr2 roundedmsr2 from "), hqlQuery);
- assertTrue(hqlQuery.contains("mq1 full outer join ") && hqlQuery.endsWith("mq2 on mq1.dim1 <=> mq2.dim1"));
+ assertTrue(hqlQuery.contains("mq1 full outer join ") && hqlQuery.endsWith("mq2 on mq1.dim1 <=> mq2.dim1"),
+ hqlQuery);
// query with aliases passed
hqlQuery =
@@ -268,8 +275,9 @@ public class TestBaseCubeQueries extends TestQueryRewrite {
assertTrue(hqlQuery.toLowerCase().startsWith(
"select coalesce(mq1.d1, mq2.d1) d1, mq2.expr2 `my msr12`, mq1.m2 m2 from ")
||
- hqlQuery.toLowerCase().startsWith("select coalesce(mq1.d1, mq2.d1) d1, mq1.expr2 `my msr12`, mq2.m2 m2 from "));
- assertTrue(hqlQuery.contains("mq1 full outer join ") && hqlQuery.endsWith("mq2 on mq1.d1 <=> mq2.d1"));
+ hqlQuery.toLowerCase().startsWith("select coalesce(mq1.d1, mq2.d1) d1, mq1.expr2 `my msr12`, mq2.m2 m2 from "),
+ hqlQuery);
+ assertTrue(hqlQuery.contains("mq1 full outer join ") && hqlQuery.endsWith("mq2 on mq1.d1 <=> mq2.d1"), hqlQuery);
// query with non default aggregate
hqlQuery = rewrite("select dim1, avg(msr12), avg(msr2) from basecube" + " where " + TWO_DAYS_RANGE, conf);
@@ -284,9 +292,10 @@ public class TestBaseCubeQueries extends TestQueryRewrite {
assertTrue(hqlQuery.toLowerCase().startsWith(
"select coalesce(mq1.dim1, mq2.dim1) dim1, mq2.msr12 msr12, mq1.msr2 msr2 from ")
|| hqlQuery.toLowerCase().startsWith(
- "select coalesce(mq1.dim1, mq2.dim1) dim1, mq1.msr12 msr12, mq2.msr2 msr2 from "));
+ "select coalesce(mq1.dim1, mq2.dim1) dim1, mq1.msr12 msr12, mq2.msr2 msr2 from "), hqlQuery);
- assertTrue(hqlQuery.contains("mq1 full outer join ") && hqlQuery.endsWith("mq2 on mq1.dim1 <=> mq2.dim1"));
+ assertTrue(hqlQuery.contains("mq1 full outer join ") && hqlQuery.endsWith("mq2 on mq1.dim1 <=> mq2.dim1"),
+ hqlQuery);
// query with join
hqlQuery = rewrite("select testdim2.name, msr12, roundedmsr2 from basecube" + " where " + TWO_DAYS_RANGE, conf);
@@ -295,17 +304,18 @@ public class TestBaseCubeQueries extends TestQueryRewrite {
+ "c1_testdim2tbl testdim2 ON basecube.dim2 = " + " testdim2.id and (testdim2.dt = 'latest') ", null,
" group by testdim2.name", null, getWhereForDailyAndHourly2days(cubeName, "C1_testFact2_BASE"));
expected2 =
- getExpectedQuery(cubeName, "select testdim2.name name, round(sum(basecube.msr2)/1000) msr2 FROM ", " JOIN "
+ getExpectedQuery(cubeName, "select testdim2.name name, round(sum(basecube.msr2)/1000) roundedmsr2 FROM ", " JOIN "
+ getDbName() + "c1_testdim2tbl testdim2 ON basecube.dim2 = "
+ " testdim2.id and (testdim2.dt = 'latest') ", null, " group by testdim2.name", null,
getWhereForHourly2days(cubeName, "C1_testfact1_raw_base"));
TestCubeRewriter.compareContains(expected1, hqlQuery);
TestCubeRewriter.compareContains(expected2, hqlQuery);
assertTrue(hqlQuery.toLowerCase().startsWith(
- "select coalesce(mq1.name, mq2.name) name, mq2.msr12 msr12, mq1.msr2 msr2 from ")
+ "select coalesce(mq1.name, mq2.name) name, mq2.msr12 msr12, mq1.roundedmsr2 roundedmsr2 from ")
|| hqlQuery.toLowerCase().startsWith(
- "select coalesce(mq1.name, mq2.name) name, mq1.msr12 msr12, mq2.msr2 msr2 from "));
- assertTrue(hqlQuery.contains("mq1 full outer join ") && hqlQuery.endsWith("mq2 on mq1.name <=> mq2.name"));
+ "select coalesce(mq1.name, mq2.name) name, mq1.msr12 msr12, mq2.roundedmsr2 roundedmsr2 from "), hqlQuery);
+ assertTrue(hqlQuery.contains("mq1 full outer join ") && hqlQuery.endsWith("mq2 on mq1.name <=> mq2.name"),
+ hqlQuery);
// query with denorm variable
hqlQuery = rewrite("select dim2, msr13, roundedmsr2 from basecube" + " where " + TWO_DAYS_RANGE, conf);
@@ -314,17 +324,20 @@ public class TestBaseCubeQueries extends TestQueryRewrite {
+ "c1_testdim2tbl testdim2 ON basecube.dim12 = " + " testdim2.id and (testdim2.dt = 'latest') ", null,
" group by testdim2.id", null, getWhereForHourly2days(cubeName, "C1_testFact3_RAW_BASE"));
expected2 =
- getExpectedQuery(cubeName, "select basecube.dim2 dim2, round(sum(basecube.msr2)/1000) msr2 FROM ", null,
+ getExpectedQuery(cubeName, "select basecube.dim2 dim2, round(sum(basecube.msr2)/1000) roundedmsr2 FROM ", null,
" group by basecube.dim2", getWhereForHourly2days(cubeName, "C1_testfact1_raw_base"));
TestCubeRewriter.compareContains(expected1, hqlQuery);
TestCubeRewriter.compareContains(expected2, hqlQuery);
assertTrue(hqlQuery.toLowerCase().startsWith(
- "select coalesce(mq1.dim2, mq2.dim2) dim2, mq2.msr13 msr13, mq1.msr2 msr2 from ")
+ "select coalesce(mq1.dim2, mq2.dim2) dim2, mq2.msr13 msr13, mq1.roundedmsr2 roundedmsr2 from ")
|| hqlQuery.toLowerCase().startsWith(
- "select coalesce(mq1.dim2, mq2.dim2) dim2, mq1.msr13 msr13, mq2.msr2 msr2 from "));
- assertTrue(hqlQuery.contains("mq1 full outer join ") && hqlQuery.endsWith("mq2 on mq1.dim2 <=> mq2.dim2"));
+ "select coalesce(mq1.dim2, mq2.dim2) dim2, mq1.msr13 msr13, mq2.roundedmsr2 roundedmsr2 from "), hqlQuery);
+ assertTrue(hqlQuery.contains("mq1 full outer join ") && hqlQuery.endsWith("mq2 on mq1.dim2 <=> mq2.dim2"),
+ hqlQuery);
// query with expression
+ // TODO allow expression to be answered from denorm columns
+ /*
hqlQuery =
rewrite(
"select booleancut, round(sum(msr2)/1000), avg(msr13 + msr14) from basecube" + " where " + TWO_DAYS_RANGE,
@@ -345,8 +358,9 @@ public class TestBaseCubeQueries extends TestQueryRewrite {
assertTrue(hqlQuery.toLowerCase()
.startsWith("select coalesce(mq1.expr1, mq2.expr1) expr1, mq2.msr2 msr2, mq1.expr3 expr3 from ")
|| hqlQuery.toLowerCase()
- .startsWith("select coalesce(mq1.expr1, mq2.expr1) expr1, mq1.msr2 msr2, mq2.expr3 expr3 from "));
- assertTrue(hqlQuery.contains("mq1 full outer join ") && hqlQuery.endsWith("mq2 on mq1.expr1 <=> mq2.expr1"));
+ .startsWith("select coalesce(mq1.expr1, mq2.expr1) expr1, mq1.msr2 msr2, mq2.expr3 expr3 from "), hqlQuery);
+ assertTrue(hqlQuery.contains("mq1 full outer join ") && hqlQuery.endsWith("mq2 on mq1.expr1 <=> mq2.expr1"),
+ hqlQuery);*/
}
@Test
http://git-wip-us.apache.org/repos/asf/incubator-lens/blob/82553db3/lens-cube/src/test/java/org/apache/lens/cube/parse/TestDenormalizationResolver.java
----------------------------------------------------------------------
diff --git a/lens-cube/src/test/java/org/apache/lens/cube/parse/TestDenormalizationResolver.java b/lens-cube/src/test/java/org/apache/lens/cube/parse/TestDenormalizationResolver.java
index 71ed1a8..e615ccc 100644
--- a/lens-cube/src/test/java/org/apache/lens/cube/parse/TestDenormalizationResolver.java
+++ b/lens-cube/src/test/java/org/apache/lens/cube/parse/TestDenormalizationResolver.java
@@ -83,7 +83,6 @@ public class TestDenormalizationResolver extends TestQueryRewrite {
hqlQuery =
rewrite("select testdim3.name, dim2big1, max(msr3)," + " msr2 from testCube" + " where " + twoDaysITRange, conf);
- System.out.println("HQL query:" + hqlQuery);
String expected =
getExpectedQuery(cubeName,
"select testdim3.name, testcube.dim2big1, max(testcube.msr3), sum(testcube.msr2) FROM ", " JOIN "
@@ -109,7 +108,6 @@ public class TestDenormalizationResolver extends TestQueryRewrite {
tconf.set(CubeQueryConfUtil.DRIVER_SUPPORTED_STORAGES, "C1");
String hqlQuery = rewrite("select dim2big1, max(msr3)," + " msr2 from testCube" + " where " + TWO_DAYS_RANGE,
tconf);
- System.out.println("HQL query:" + hqlQuery);
String expected =
getExpectedQuery(cubeName, "select testdim2.bigid1, max(testcube.msr3), sum(testcube.msr2) FROM ", " JOIN "
+ getDbName() + "c1_testdim2tbl2 testdim2 ON testcube.dim2 = "
@@ -119,7 +117,6 @@ public class TestDenormalizationResolver extends TestQueryRewrite {
hqlQuery =
rewrite("select testdim2.name, dim2big1, max(msr3)," + " msr2 from testCube" + " where " + TWO_DAYS_RANGE, tconf);
- System.out.println("HQL query:" + hqlQuery);
expected =
getExpectedQuery(cubeName,
"select testdim2.name, testdim2.bigid1, max(testcube.msr3), sum(testcube.msr2) FROM ", " JOIN "
@@ -131,7 +128,6 @@ public class TestDenormalizationResolver extends TestQueryRewrite {
hqlQuery =
rewrite("select testdim2.name, dim2big1, max(msr3)," + " msr2 from testCube left outer join testdim2"
+ " where " + TWO_DAYS_RANGE, tconf);
- System.out.println("HQL query:" + hqlQuery);
expected =
getExpectedQuery(cubeName,
"select testdim2.name, testdim2.bigid1, max(testcube.msr3), sum(testcube.msr2) FROM ", " left outer JOIN "
@@ -142,7 +138,6 @@ public class TestDenormalizationResolver extends TestQueryRewrite {
hqlQuery =
rewrite("select testdim3.name, dim2big1, max(msr3)," + " msr2 from testCube" + " where " + TWO_DAYS_RANGE, tconf);
- System.out.println("HQL query:" + hqlQuery);
expected =
getExpectedQuery(cubeName,
"select testdim3.name, testdim2.bigid1, max(testcube.msr3), sum(testcube.msr2) FROM ", " JOIN "
@@ -174,6 +169,34 @@ public class TestDenormalizationResolver extends TestQueryRewrite {
}
));
}
+ @Test
+ public void testCubeQueryWithExpressionHavingDenormColumnComingAsDirectColumn() throws Exception {
+ String twoDaysITRange =
+ "time_range_in(it, '" + CubeTestSetup.getDateUptoHours(TWODAYS_BACK) + "','"
+ + CubeTestSetup.getDateUptoHours(NOW) + "')";
+ String hqlQuery = rewrite("select substrdim2big1, max(msr3)," + " msr2 from testCube" + " where " + twoDaysITRange,
+ conf);
+ String expecteddim2big1 =
+ getExpectedQuery(cubeName, "select substr(testcube.dim2big1, 5), max(testcube.msr3), sum(testcube.msr2) FROM ",
+ null, " group by substr(testcube.dim2big1, 5)",
+ getWhereForDailyAndHourly2daysWithTimeDim(cubeName, "it", "C2_summary4"),
+ null);
+ TestCubeRewriter.compareQueries(expecteddim2big1, hqlQuery);
+ }
+
+ @Test
+ public void testCubeQueryWithExpressionHavingDenormColumnResultingJoin() throws Exception {
+ Configuration tconf = new Configuration(this.conf);
+ tconf.set(CubeQueryConfUtil.DRIVER_SUPPORTED_STORAGES, "C1");
+ String hqlQuery = rewrite("select substrdim2big1, max(msr3)," + " msr2 from testCube" + " where " + TWO_DAYS_RANGE,
+ tconf);
+ String expected =
+ getExpectedQuery(cubeName, "select substr(testdim2.bigid1, 5), max(testcube.msr3), sum(testcube.msr2) FROM ",
+ " JOIN " + getDbName() + "c1_testdim2tbl2 testdim2 ON testcube.dim2 = "
+ + " testdim2.id and (testdim2.dt = 'latest') ", null, "group by substr(testdim2.bigid1, 5)", null,
+ getWhereForDailyAndHourly2days(cubeName, "c1_summary2"));
+ TestCubeRewriter.compareQueries(expected, hqlQuery);
+ }
@Test
public void testDimensionQuery() throws Exception {
@@ -202,6 +225,18 @@ public class TestDenormalizationResolver extends TestQueryRewrite {
}
@Test
+ public void testDimensionQueryWithExpressionHavingDenormColumn() throws Exception {
+ String hqlQuery = rewrite("select citydim.name, citydim.citystate from" + " citydim", conf);
+ String joinExpr =
+ " join " + getDbName() + "c1_statetable statedim on"
+ + " citydim.stateid = statedim.id and (statedim.dt = 'latest')";
+ String expected =
+ getExpectedQuery("citydim", "SELECT citydim.name, concat(citydim.name, \":\", statedim.name) FROM ",
+ joinExpr, null, null, "c1_citytable", true);
+ TestCubeRewriter.compareQueries(expected, hqlQuery);
+ }
+
+ @Test
public void testNonExistingDimension() throws Exception {
SemanticException e = getSemanticExceptionInRewrite("select nonexist.name, msr2 from testCube where "
+ TWO_DAYS_RANGE, conf);
http://git-wip-us.apache.org/repos/asf/incubator-lens/blob/82553db3/lens-cube/src/test/java/org/apache/lens/cube/parse/TestExpressionContext.java
----------------------------------------------------------------------
diff --git a/lens-cube/src/test/java/org/apache/lens/cube/parse/TestExpressionContext.java b/lens-cube/src/test/java/org/apache/lens/cube/parse/TestExpressionContext.java
new file mode 100644
index 0000000..0d1f9fe
--- /dev/null
+++ b/lens-cube/src/test/java/org/apache/lens/cube/parse/TestExpressionContext.java
@@ -0,0 +1,111 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.lens.cube.parse;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static org.apache.lens.cube.parse.CubeTestSetup.TWO_DAYS_RANGE;
+
+import org.apache.lens.cube.parse.ExpressionResolver.ExprSpecContext;
+
+import org.apache.hadoop.conf.Configuration;
+
+import org.testng.Assert;
+import org.testng.annotations.BeforeTest;
+import org.testng.annotations.Test;
+
+public class TestExpressionContext extends TestQueryRewrite {
+
+ private Configuration conf;
+
+ @BeforeTest
+ public void setupDriver() throws Exception {
+ conf = new Configuration();
+ conf.set(CubeQueryConfUtil.DRIVER_SUPPORTED_STORAGES, "C1,C2");
+ conf.setBoolean(CubeQueryConfUtil.DISABLE_AUTO_JOINS, false);
+ conf.setBoolean(CubeQueryConfUtil.ENABLE_SELECT_TO_GROUPBY, true);
+ conf.setBoolean(CubeQueryConfUtil.ENABLE_GROUP_BY_TO_SELECT, true);
+ conf.setBoolean(CubeQueryConfUtil.DISABLE_AGGREGATE_RESOLVER, false);
+ }
+
+ @Test
+ public void testNestedExpressions() throws Exception {
+ CubeQueryContext nestedExprQL = rewriteCtx("select nestedexpr from testCube where " + TWO_DAYS_RANGE, conf);
+ Assert.assertNotNull(nestedExprQL.getExprCtx());
+ List<String> expectedExpressions = new ArrayList<String>();
+ expectedExpressions.add("avg(( testcube . roundedmsr2 ))");
+ expectedExpressions.add("avg(( testcube . equalsums ))");
+ expectedExpressions.add(" case when (( testcube . substrexpr ) = 'xyz' ) then avg(( testcube . msr5 ))"
+ + " when (( testcube . substrexpr ) = 'abc' ) then (avg(( testcube . msr4 )) / 100 ) end ");
+ expectedExpressions.add("avg(round((( testcube . msr2 ) / 1000 )))");
+ expectedExpressions.add("avg((( testcube . msr3 ) + ( testcube . msr4 )))");
+ expectedExpressions.add("avg(((( testcube . msr3 ) + ( testcube . msr2 )) / 100 ))");
+ expectedExpressions.add(" case when (substr(( testcube . dim1 ), 3 ) = 'xyz' ) then avg(( testcube . msr5 ))"
+ + " when (substr(( testcube . dim1 ), 3 ) = 'abc' ) then (avg(( testcube . msr4 )) / 100 ) end ");
+ expectedExpressions.add(" case when (substr(ascii(( testdim2 . name )), 3 ) = 'xyz' ) then"
+ + " avg(( testcube . msr5 )) when (substr(ascii(( testdim2 . name )), 3 ) = 'abc' ) then"
+ + " (avg(( testcube . msr4 )) / 100 ) end ");
+ expectedExpressions.add(" case when (substr(( testcube . dim1 ), 3 ) = 'xyz' ) then avg((( testcube . msr2 )"
+ + " + ( testcube . msr3 ))) when (substr(( testcube . dim1 ), 3 ) = 'abc' ) then"
+ + " (avg(( testcube . msr4 )) / 100 ) end ");
+ expectedExpressions.add(" case when (substr(ascii(( testdim2 . name )), 3 ) = 'xyz' ) then"
+ + " avg((( testcube . msr2 ) + ( testcube . msr3 ))) when (substr(ascii(( testdim2 . name )), 3 ) = 'abc' )"
+ + " then (avg(( testcube . msr4 )) / 100 ) end ");
+ expectedExpressions.add(" case when (( testcube . substrexpr ) = 'xyz' ) then avg((( testcube . msr2 )"
+ + " + ( testcube . msr3 ))) when (( testcube . substrexpr ) = 'abc' ) then (avg(( testcube . msr4 )) / 100 )"
+ + " end ");
+ expectedExpressions.add(" case when (substr(( testcube . dim1 ), 3 ) = 'xyz' ) then avg((( testcube . msr2 )"
+ + " + ( testcube . msr3 ))) when (substr(( testcube . dim1 ), 3 ) = 'abc' ) then"
+ + " (avg(( testcube . msr4 )) / 100 ) end ");
+ expectedExpressions.add(" case when (substr(ascii(( testdim2 . name )), 3 ) = 'xyz' ) then"
+ + " avg((( testcube . msr2 ) + ( testcube . msr3 ))) when (substr(ascii(( testdim2 . name )), 3 ) = 'abc' )"
+ + " then (avg(( testcube . msr4 )) / 100 ) end ");
+
+ List<String> actualExpressions = new ArrayList<String>();
+ for (ExprSpecContext esc : nestedExprQL.getExprCtx().getExpressionContext("nestedexpr", "testcube").getAllExprs()) {
+ actualExpressions.add(HQLParser.getString(esc.getFinalAST()));
+ }
+ Assert.assertTrue(actualExpressions.containsAll(expectedExpressions), actualExpressions.toString());
+ Assert.assertTrue(expectedExpressions.containsAll(actualExpressions), actualExpressions.toString());
+ }
+
+ @Test
+ public void testNestedExpressionsWithTimes() throws Exception {
+ CubeQueryContext nestedExprQL = rewriteCtx("select nestedExprWithTimes from testCube where " + TWO_DAYS_RANGE,
+ conf);
+ Assert.assertNotNull(nestedExprQL.getExprCtx());
+ List<String> expectedExpressions = new ArrayList<String>();
+ expectedExpressions.add("avg(( testcube . roundedmsr2 ))");
+ expectedExpressions.add("avg(( testcube . equalsums ))");
+ expectedExpressions.add("avg(round((( testcube . msr2 ) / 1000 )))");
+ expectedExpressions.add("avg((( testcube . msr3 ) + ( testcube . msr4 )))");
+ expectedExpressions.add("avg(((( testcube . msr3 ) + ( testcube . msr2 )) / 100 ))");
+
+ List<String> actualExpressions = new ArrayList<String>();
+ for (ExprSpecContext esc : nestedExprQL.getExprCtx()
+ .getExpressionContext("nestedexprwithtimes", "testcube").getAllExprs()) {
+ actualExpressions.add(HQLParser.getString(esc.getFinalAST()));
+ }
+ Assert.assertTrue(actualExpressions.containsAll(expectedExpressions), actualExpressions.toString());
+ Assert.assertTrue(expectedExpressions.containsAll(actualExpressions), actualExpressions.toString());
+ }
+
+}
http://git-wip-us.apache.org/repos/asf/incubator-lens/blob/82553db3/lens-cube/src/test/java/org/apache/lens/cube/parse/TestExpressionResolver.java
----------------------------------------------------------------------
diff --git a/lens-cube/src/test/java/org/apache/lens/cube/parse/TestExpressionResolver.java b/lens-cube/src/test/java/org/apache/lens/cube/parse/TestExpressionResolver.java
index a78bcbd..5cb7b0a 100644
--- a/lens-cube/src/test/java/org/apache/lens/cube/parse/TestExpressionResolver.java
+++ b/lens-cube/src/test/java/org/apache/lens/cube/parse/TestExpressionResolver.java
@@ -21,10 +21,7 @@ package org.apache.lens.cube.parse;
import static org.apache.lens.cube.parse.CubeTestSetup.*;
-import java.util.ArrayList;
-import java.util.List;
-
-import org.apache.lens.cube.metadata.StorageConstants;
+import org.apache.lens.cube.parse.CandidateTablePruneCause.CandidateTablePruneCode;
import org.apache.lens.server.api.error.LensException;
import org.apache.hadoop.conf.Configuration;
@@ -65,84 +62,115 @@ public class TestExpressionResolver extends TestQueryRewrite {
}
@Test
- public void testCubeQuery() throws Exception {
+ public void testCubeQueryExpressionSelection() throws Exception {
// select with expression
- String hqlQuery = rewrite("cube select" + " avgmsr from testCube where " + TWO_DAYS_RANGE, conf);
+ String hqlQuery = rewrite("cube select avgmsr from testCube where " + TWO_DAYS_RANGE, conf);
String expected =
getExpectedQuery(cubeName, "select avg(testCube.msr1 + testCube.msr2) FROM ", null, null,
getWhereForHourly2days("C1_testfact2_raw"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
+ }
- hqlQuery = rewrite("select dim1, roundedmsr2 from testCube" + " where " + TWO_DAYS_RANGE, conf);
- expected =
+ @Test
+ public void testCubeQueryExpressionSelectionAlongWithColumn() throws Exception {
+ String hqlQuery = rewrite("select dim1, roundedmsr2 from testCube" + " where " + TWO_DAYS_RANGE, conf);
+ String expected =
getExpectedQuery(cubeName, "select testcube.dim1, round(sum(testcube.msr2)/1000) FROM ", null,
" group by testcube.dim1", getWhereForDailyAndHourly2days(cubeName, "c1_summary1"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
+ }
+ @Test
+ public void testExpressionInWhereAfterTimerange() throws Exception {
// where with expression
- hqlQuery = rewrite("select msr2 from testCube" + " where " + TWO_DAYS_RANGE + " and substrexpr != 'XYZ'", conf);
- expected =
+ String hqlQuery = rewrite("select msr2 from testCube" + " where " + TWO_DAYS_RANGE + " and substrexpr != 'XYZ'",
+ conf);
+ String expected =
getExpectedQuery(cubeName, "select sum(testcube.msr2) FROM ", null, " and substr(testCube.dim1, 3) != 'XYZ'",
getWhereForDailyAndHourly2days(cubeName, "c1_summary1"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
-
- hqlQuery = rewrite("select SUM(msr2) from testCube" + " where substrexpr != 'XYZ' and " + TWO_DAYS_RANGE, conf);
- expected =
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
+ }
+ @Test
+ public void testExpressionInWhereBeforeTimerange() throws Exception {
+ String hqlQuery = rewrite("select SUM(msr2) from testCube" + " where substrexpr != 'XYZ' and " + TWO_DAYS_RANGE,
+ conf);
+ String expected =
getExpectedQuery(cubeName, "select sum(testcube.msr2) FROM ", "substr(testCube.dim1, 3) != 'XYZ'", null,
getWhereForDailyAndHourly2days(cubeName, "c1_summary1"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
-
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
+ }
+ @Test
+ public void testExpressionInSelectAndWhere() throws Exception {
// expression in select and where
- hqlQuery = rewrite("select avgmsr from testCube" + " where " + TWO_DAYS_RANGE + " and substrexpr != 'XYZ'", conf);
- expected =
+ String hqlQuery = rewrite("select avgmsr from testCube" + " where " + TWO_DAYS_RANGE + " and substrexpr != 'XYZ'",
+ conf);
+ String expected =
getExpectedQuery(cubeName, "select avg(testCube.msr1 + testCube.msr2) FROM ", null,
" and substr(testCube.dim1, 3) != 'XYZ'", getWhereForHourly2days("C1_testfact2_raw"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
-
- hqlQuery = rewrite("select avgmsr from testCube" + " where " + TWO_DAYS_RANGE + " and indiasubstr = true", conf);
- expected =
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
+ }
+ @Test
+ public void testNestedExpressionInWhere() throws Exception {
+ String hqlQuery = rewrite("select avgmsr from testCube" + " where " + TWO_DAYS_RANGE + " and indiasubstr = true",
+ conf);
+ String expected =
getExpectedQuery(cubeName, "select avg(testCube.msr1 + testCube.msr2) FROM ", null,
" and (substr(testCube.dim1, 3) = 'INDIA') = true", getWhereForHourly2days("C1_testfact2_raw"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
+ }
+ @Test
+ public void testExpressionWithTableAlias() throws Exception {
// expression with alias
- hqlQuery =
+ String hqlQuery =
rewrite("select TC.avgmsr from testCube TC" + " where " + TWO_DAYS_RANGE + " and TC.substrexpr != 'XYZ'", conf);
- expected =
+ String expected =
getExpectedQuery("tc", "select avg(tc.msr1 + tc.msr2) FROM ", null, " and substr(tc.dim1, 3) != 'XYZ'",
getWhereForHourly2days("tc", "C1_testfact2_raw"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
+ }
+ @Test
+ public void testCubeExpressionWithColumnAlias() throws Exception {
// expression with column alias
- hqlQuery =
+ String hqlQuery =
rewrite("select TC.substrexpr as subdim1, TC.avgmsr from testCube TC" + " where " + TWO_DAYS_RANGE
+ " and subdim1 != 'XYZ'", conf);
- expected =
+ String expected =
getExpectedQuery("tc", "select substr(tc.dim1, 3) subdim1, avg(tc.msr1 + tc.msr2) FROM ", null,
" and subdim1 != 'XYZ' group by substr(tc.dim1, 3)", getWhereForHourly2days("tc", "C1_testfact2_raw"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
+ }
+ @Test
+ public void testExpressionInGroupbyToSelect() throws Exception {
// expression with groupby
- hqlQuery =
+ String hqlQuery =
rewrite("select avgmsr from testCube" + " where " + TWO_DAYS_RANGE
+ " and substrexpr != 'XYZ' group by booleancut", conf);
- expected =
+ String expected =
getExpectedQuery(cubeName, "select testCube.dim1 != 'x' AND testCube.dim2 != 10 ,"
+ " avg(testCube.msr1 + testCube.msr2) FROM ", null, " and substr(testCube.dim1, 3) != 'XYZ'"
- + " group by testCube.dim1 != 'x' AND testCube.dim2 != 10", getWhereForHourly2days("C1_testfact2_raw"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ + " group by testCube.dim1 != 'x' AND testCube.dim2 != 10", getWhereForHourly2days("C1_testfact2_raw"));
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
- hqlQuery =
+ }
+ @Test
+ public void testExpressionInSelectToGroupby() throws Exception {
+ String hqlQuery =
rewrite("select booleancut, avgmsr from testCube" + " where " + TWO_DAYS_RANGE + " and substrexpr != 'XYZ'",
conf);
- expected =
+ String expected =
getExpectedQuery(cubeName, "select testCube.dim1 != 'x' AND testCube.dim2 != 10 ,"
+ " avg(testCube.msr1 + testCube.msr2) FROM ", null, " and substr(testCube.dim1, 3) != 'XYZ' "
- + "group by testCube.dim1 != 'x' AND testCube.dim2 != 10", getWhereForHourly2days("C1_testfact2_raw"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ + "group by testCube.dim1 != 'x' AND testCube.dim2 != 10", getWhereForHourly2days("C1_testfact2_raw"));
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
+ }
+ @Test
+ public void testExpressionToJoin() throws Exception {
// expression which results in join
- hqlQuery =
+ String hqlQuery =
rewrite("select cityAndState, avgmsr from testCube" + " where " + TWO_DAYS_RANGE + " and substrexpr != 'XYZ'",
conf);
@@ -153,76 +181,138 @@ public class TestExpressionResolver extends TestQueryRewrite {
+ "c1_statetable statedim on" + " testcube.stateid = statedim.id and (statedim.dt = 'latest')";
String joinExpr;
- expected =
+ String expected =
getExpectedQuery(cubeName, "select concat(citydim.name, \":\", statedim.name),"
+ " avg(testcube.msr1 + testcube.msr2) FROM ", join2 + join1, null, " and substr(testcube.dim1, 3) != 'XYZ'"
- + " group by concat(citydim.name, \":\", statedim.name)", null, getWhereForHourly2days("C1_testfact2_raw"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ + " group by concat(citydim.name, \":\", statedim.name)", null, getWhereForHourly2days("C1_testfact2_raw"));
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
+ }
+ @Test
+ public void testExpressionInWhereWithJoinClausePassed() throws Exception {
- hqlQuery =
+ String hqlQuery =
rewrite("select cityAndState, avgmsr from testCube tc" + " join citydim cd join statedim sd " + " where "
+ TWO_DAYS_RANGE + " and substrexpr != 'XYZ'", conf);
- join1 = " inner join " + getDbName() + "c1_citytable cd" + " on tc.cityid = cd.id and (cd.dt = 'latest')";
- join2 = " inner join" + getDbName() + "c1_statetable sd on" + " tc.stateid = sd.id and (sd.dt = 'latest')";
- expected =
+ String join1 = " inner join " + getDbName() + "c1_citytable cd" + " on tc.cityid = cd.id and (cd.dt = 'latest')";
+ String join2 = " inner join" + getDbName() + "c1_statetable sd on" + " tc.stateid = sd.id and (sd.dt = 'latest')";
+ String expected =
getExpectedQuery("tc", "select concat(cd.name, \":\", sd.name)," + " avg(tc.msr1 + tc.msr2) FROM ",
join2 + join1, null, " and substr(tc.dim1, 3) != 'XYZ'" + " group by concat(cd.name, \":\", sd.name)", null,
getWhereForHourly2days("tc", "C1_testfact2_raw"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
+ }
+ //@Test
+ public void testExpressionInJoinClause() throws Exception {
// expression in join clause
- List<String> joinWhereConds = new ArrayList<String>();
+ /*
+ * This is broken right now as partial join conditions
+ * List<String> joinWhereConds = new ArrayList<String>();
joinWhereConds.add(StorageUtil.getWherePartClause("dt", "statedim", StorageConstants.getPartitionsForLatest()));
- hqlQuery =
+ String hqlQuery =
rewrite("select cityAndState, avgmsr from testCube " + " join citydim on substrexpr != 'XYZ' where "
+ TWO_DAYS_RANGE, conf);
- joinExpr =
+ String joinExpr =
"join" + getDbName() + "c1_statetable statedim on" + " testcube.stateid = statedim.id"
+ " inner join " + getDbName() + "c1_citytable citydim" + " on testcube.cityid = citydim.id "
+ " and substr(testcube.dim1, 3) != 'XYZ' and (citydim.dt = 'latest') ";
- expected =
+ String expected =
getExpectedQuery(cubeName, "select concat(citydim.name, \":\", statedim.name),"
+ " avg(testcube.msr1 + testcube.msr2) FROM ", joinExpr, null,
" group by concat(citydim.name, \":\", statedim.name)", joinWhereConds,
getWhereForHourly2days("C1_testfact2_raw"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
-
+ TestCubeRewriter.compareQueries(hqlQuery, expected);*/
+ }
+ @Test
+ public void testExpressionInHaving() throws Exception {
// expression with having clause
- hqlQuery =
+ String hqlQuery =
rewrite("cube select booleancut, avgmsr from testCube" + " where " + TWO_DAYS_RANGE + " and substrexpr != 'XYZ'"
+ " having msr6 > 100.0", conf);
- expected =
+ String expected =
getExpectedQuery(cubeName, "select testCube.dim1 != 'x' AND testCube.dim2 != 10 ,"
- + " avg(testCube.msr1 + testCube.msr2) FROM ", null, " and substr(testCube.dim1, 3) != 'XYZ' "
+ + " avg(testCube.msr1 + testCube.msr2) FROM ", null, " and substr(testCube.dim1, 3) != 'XYZ' "
+ " group by testCube.dim1 != 'x' AND testCube.dim2 != 10"
+ " having (sum(testCube.msr2) + max(testCube.msr3))/ count(testcube.msr4) > 100.0",
- getWhereForHourly2days("C1_testfact2_raw"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ getWhereForHourly2days("C1_testfact2_raw"));
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
+ }
+ @Test
+ public void testExpressionInOrderby() throws Exception {
// expression with orderby clause
- hqlQuery =
+ String hqlQuery =
rewrite("cube select avgmsr from testCube " + " where " + TWO_DAYS_RANGE + " and substrexpr != 'XYZ'"
+ " group by booleancut having msr6 > 100.0 order by booleancut", conf);
- expected =
+ String expected =
getExpectedQuery(cubeName, "select testCube.dim1 != 'x' AND testCube.dim2 != 10 ,"
+ " avg(testCube.msr1 + testCube.msr2) FROM ", null, " and substr(testCube.dim1, 3) != 'XYZ' "
- + " group by testCube.dim1 != 'x' AND testCube.dim2 != 10"
- + " having (sum(testCube.msr2) + max(testCube.msr3))/ count(testcube.msr4) > 100.0"
- + " order by testCube.dim1 != 'x' AND testCube.dim2 != 10 asc", getWhereForHourly2days("C1_testfact2_raw"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
-
- hqlQuery =
+ + " group by testCube.dim1 != 'x' AND testCube.dim2 != 10"
+ + " having (sum(testCube.msr2) + max(testCube.msr3))/ count(testcube.msr4) > 100.0"
+ + " order by testCube.dim1 != 'x' AND testCube.dim2 != 10 asc", getWhereForHourly2days("C1_testfact2_raw"));
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
+ }
+ @Test
+ public void testExpressionWithAliasInOrderby() throws Exception {
+ String hqlQuery =
rewrite("cube select booleancut bc, msr2 from testCube" + " where " + TWO_DAYS_RANGE + " and substrexpr != 'XYZ'"
+ " having msr6 > 100.0 order by bc", conf);
- expected =
+ String expected =
getExpectedQuery(cubeName, "select testCube.dim1 != 'x' AND testCube.dim2 != 10 bc,"
- + " sum(testCube.msr2) FROM ", null, " and substr(testCube.dim1, 3) != 'XYZ' "
+ + " sum(testCube.msr2) FROM ", null, " and substr(testCube.dim1, 3) != 'XYZ' "
+ " group by testCube.dim1 != 'x' AND testCube.dim2 != 10"
+ " having (sum(testCube.msr2) + max(testCube.msr3))/ count(testcube.msr4) > 100.0" + " order by bc asc",
- getWhereForDailyAndHourly2days(cubeName, "c1_summary2"));
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ getWhereForDailyAndHourly2days(cubeName, "c1_summary2"));
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
+ }
+
+ @Test
+ public void testMultipleExpressionsPickingFirstExpression() throws Exception {
+ Configuration newConf = new Configuration(conf);
+ newConf.set(CubeQueryConfUtil.getValidFactTablesKey(cubeName), "testFact");
+ String hqlQuery = rewrite("select equalsums from testCube where " + TWO_DAYS_RANGE, newConf);
+ String expected =
+ getExpectedQuery(cubeName, "select max(testcube.msr3) + count(testcube.msr4) FROM ", null, null,
+ getWhereForDailyAndHourly2days(cubeName, "C2_testfact"));
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
+ }
+
+ @Test
+ public void testMultipleExpressionsPickingSecondExpression() throws Exception {
+ String hqlQuery = rewrite("select equalsums from testCube where " + TWO_DAYS_RANGE, conf);
+ String expected = getExpectedQuery(cubeName, "select (max(testCube.msr3) + sum(testCube.msr2))/100 FROM ", null,
+ null, getWhereForHourly2days(cubeName, "C1_testfact2"));
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
+ }
+
+ @Test
+ public void testMaterializedExpressionPickingExpression() throws Exception {
+ // select with expression
+ String hqlQuery = rewrite("select msr5 from testCube where " + TWO_DAYS_RANGE, conf);
+ String expected = getExpectedQuery(cubeName, "select sum(testCube.msr2) + max(testCube.msr3) FROM ", null, null,
+ getWhereForHourly2days(cubeName, "C1_testfact2"));
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
+ }
+
+ @Test
+ public void testMaterializedExpressionPickingMaterializedValue() throws Exception {
+ Configuration newConf = new Configuration(conf);
+ newConf.set(CubeQueryConfUtil.getValidFactTablesKey(cubeName), "testFact");
+ String hqlQuery = rewrite("select msr5 from testCube where " + TWO_DAYS_RANGE, newConf);
+ String expected = getExpectedQuery(cubeName, "select testcube.msr5 FROM ", null, null,
+ getWhereForDailyAndHourly2days(cubeName, "C2_testfact"));
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
+ }
+
+ @Test
+ public void testExprDimAttribute() throws Exception {
+ // select with expression
+ String hqlQuery = rewrite("select substrexpr from testCube where " + TWO_DAYS_RANGE, conf);
+ String expected = getExpectedQuery(cubeName, "select distinct substr(testCube.dim1, 3) FROM ", null, null,
+ getWhereForDailyAndHourly2days(cubeName, "c1_summary1"));
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
}
@Test
@@ -233,7 +323,7 @@ public class TestExpressionResolver extends TestQueryRewrite {
}
@Test
- public void testDimensionQuery() throws Exception {
+ public void testDimensionQueryWithExpression() throws Exception {
String hqlQuery = rewrite("select citydim.name, cityaddress from" + " citydim", conf);
String joinExpr;
@@ -247,20 +337,82 @@ public class TestExpressionResolver extends TestQueryRewrite {
String expected =
getExpectedQuery("citydim", "SELECT citydim.name, concat((citydim.name), \":\", (statedim.name ),"
+ " \":\",(countrydim.name), \":\" , ( zipdim . code )) FROM ", joinExpr, null, null, "c1_citytable", true);
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
+ }
+
+ @Test
+ public void testExpressionPruningForInvalidDim() throws Exception {
+ Configuration newConf = new Configuration(conf);
+ newConf.set(CubeQueryConfUtil.DRIVER_SUPPORTED_STORAGES, "C2");
+
+ // cityaddress =
+ //new ExprSpec("concat(citydim.name, \":\", statedim.name, \":\", countrydim.name, \":\", zipdim.code)", null,
+ // null), new ExprSpec("concat(citydim.name, \":\", statedim.name)", null, null)));
+ // since zipdim is not available in storage C2, first expression should be have been pruned
+ // And joining with statedim for second expression is not possible because of stateid missing in C2 tables
+ // or citydim.name missing in c2 tables.
+ CubeQueryContext ctx = rewriteCtx("select citydim.name, cityaddress from" + " citydim", newConf);
+ Assert.assertEquals(ctx.getDimPruningMsgs().get(ctx.getMetastoreClient().getDimension("citydim"))
+ .get(ctx.getMetastoreClient().getDimensionTable("citytable")).size(), 1);
+ CandidateTablePruneCause pruningMsg =
+ ctx.getDimPruningMsgs().get(ctx.getMetastoreClient().getDimension("citydim"))
+ .get(ctx.getMetastoreClient().getDimensionTable("citytable")).get(0);
+ Assert.assertEquals(pruningMsg.getCause(), CandidateTablePruneCode.EXPRESSION_NOT_EVALUABLE);
+ Assert.assertTrue(pruningMsg.getMissingExpressions().contains("cityaddress"));
+ }
- hqlQuery = rewrite("select ct.name, ct.cityaddress from" + " citydim ct", conf);
+ @Test
+ public void testDimensionQueryWithExpressionWithColumnAlias() throws Exception {
+ String hqlQuery = rewrite("select citydim.name cname, cityaddress caddr from" + " citydim", conf);
- joinExpr =
+ String joinExpr;
+ String join1 =
+ " join " + getDbName() + "c1_ziptable zipdim on" + " citydim.zipcode = zipdim.code and (zipdim.dt = 'latest')";
+ String join2 = " join " + getDbName() + "c1_statetable statedim on"
+ + " citydim.stateid = statedim.id and (statedim.dt = 'latest')";
+ String join3 = " join " + getDbName()
+ + "c1_countrytable countrydim on" + " statedim.countryid = countrydim.id";
+ joinExpr = join2 + join3 + join1;
+ String expected =
+ getExpectedQuery("citydim", "SELECT citydim.name cname, concat((citydim.name), \":\", (statedim.name ),"
+ + " \":\",(countrydim.name), \":\" , ( zipdim . code )) caddr FROM ", joinExpr, null, null, "c1_citytable",
+ true);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
+ }
+
+ @Test
+ public void testDimensionQueryWithTableAlias() throws Exception {
+ String hqlQuery = rewrite("select ct.name, ct.cityaddress from" + " citydim ct", conf);
+
+ String joinExpr =
""
+ " join " + getDbName() + ".c1_statetable statedim on ct.stateid = statedim.id and (statedim.dt = 'latest')"
+ " join " + getDbName() + ".c1_countrytable countrydim on statedim.countryid = countrydim.id"
+ " join " + getDbName() + ".c1_ziptable zipdim on ct.zipcode = zipdim.code and (zipdim.dt = 'latest')"
+ "";
- expected =
+ String expected =
getExpectedQuery("ct", "SELECT ct.name, concat((ct.name), \":\", (statedim.name ),"
+ " \":\",(countrydim.name), \":\" , ( zipdim . code )) FROM ", joinExpr, null, null, "c1_citytable", true);
- TestCubeRewriter.compareQueries(expected, hqlQuery);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
}
+
+ @Test
+ public void testDimensionQueryWithTableAliasColumnAlias() throws Exception {
+ String hqlQuery = rewrite("select ct.name cname, ct.cityaddress caddr from" + " citydim ct", conf);
+
+ String joinExpr =
+ ""
+ + " join " + getDbName() + ".c1_statetable statedim on ct.stateid = statedim.id and (statedim.dt = 'latest')"
+ + " join " + getDbName() + ".c1_countrytable countrydim on statedim.countryid = countrydim.id"
+ + " join " + getDbName() + ".c1_ziptable zipdim on ct.zipcode = zipdim.code and (zipdim.dt = 'latest')"
+ + "";
+
+ String expected =
+ getExpectedQuery("ct", "SELECT ct.name cname, concat((ct.name), \":\", (statedim.name ),"
+ + " \":\",(countrydim.name), \":\" , ( zipdim . code )) caddr FROM ", joinExpr, null, null, "c1_citytable",
+ true);
+ TestCubeRewriter.compareQueries(hqlQuery, expected);
+ }
+
}
[3/3] incubator-lens git commit: LENS-174: Cube rewriter changes to
support multiple expressions
Posted by pr...@apache.org.
LENS-174: Cube rewriter changes to support multiple expressions
Project: http://git-wip-us.apache.org/repos/asf/incubator-lens/repo
Commit: http://git-wip-us.apache.org/repos/asf/incubator-lens/commit/82553db3
Tree: http://git-wip-us.apache.org/repos/asf/incubator-lens/tree/82553db3
Diff: http://git-wip-us.apache.org/repos/asf/incubator-lens/diff/82553db3
Branch: refs/heads/master
Commit: 82553db30abbc981c7e7bbc3788faa7db3270156
Parents: ca30cf8
Author: Amareshwari Sriramadasu <am...@apache.org>
Authored: Tue May 26 18:06:41 2015 +0530
Committer: Rajat Khandelwal <ra...@gmail.com>
Committed: Tue May 26 18:06:41 2015 +0530
----------------------------------------------------------------------
.../apache/lens/cube/metadata/Dimension.java | 6 +-
.../apache/lens/cube/metadata/ExprColumn.java | 2 +-
.../lens/cube/parse/AggregateResolver.java | 113 ++-
.../apache/lens/cube/parse/AliasReplacer.java | 46 +-
.../apache/lens/cube/parse/CandidateFact.java | 12 +-
.../cube/parse/CandidateTablePruneCause.java | 28 +-
.../lens/cube/parse/CandidateTableResolver.java | 73 +-
.../apache/lens/cube/parse/ColumnResolver.java | 26 +-
.../lens/cube/parse/CubeQueryContext.java | 98 ++-
.../lens/cube/parse/CubeQueryRewriter.java | 15 +-
.../cube/parse/DenormalizationResolver.java | 60 +-
.../lens/cube/parse/ExpressionResolver.java | 744 +++++++++++++++++--
.../apache/lens/cube/parse/FieldValidator.java | 57 +-
.../apache/lens/cube/parse/JoinResolver.java | 4 +-
.../lens/cube/parse/TimerangeResolver.java | 1 -
.../lens/cube/parse/TrackQueriedColumns.java | 27 +
.../apache/lens/cube/parse/CubeTestSetup.java | 46 +-
.../FieldsCannotBeQueriedTogetherTest.java | 138 +++-
.../lens/cube/parse/TestBaseCubeQueries.java | 112 +--
.../cube/parse/TestDenormalizationResolver.java | 45 +-
.../lens/cube/parse/TestExpressionContext.java | 111 +++
.../lens/cube/parse/TestExpressionResolver.java | 306 ++++++--
.../lens/cube/parse/TestJoinResolver.java | 54 +-
.../lens/cube/parse/TestQueryMetrics.java | 14 +-
lens-cube/src/test/resources/log4j.properties | 8 +-
25 files changed, 1726 insertions(+), 420 deletions(-)
----------------------------------------------------------------------
http://git-wip-us.apache.org/repos/asf/incubator-lens/blob/82553db3/lens-cube/src/main/java/org/apache/lens/cube/metadata/Dimension.java
----------------------------------------------------------------------
diff --git a/lens-cube/src/main/java/org/apache/lens/cube/metadata/Dimension.java b/lens-cube/src/main/java/org/apache/lens/cube/metadata/Dimension.java
index 1a4b581..9cba3a7 100644
--- a/lens-cube/src/main/java/org/apache/lens/cube/metadata/Dimension.java
+++ b/lens-cube/src/main/java/org/apache/lens/cube/metadata/Dimension.java
@@ -171,7 +171,11 @@ public class Dimension extends AbstractBaseTable {
}
public CubeColumn getColumnByName(String column) {
- return getAttributeByName(column);
+ CubeColumn cubeCol = super.getExpressionByName(column);
+ if (cubeCol == null) {
+ cubeCol = getAttributeByName(column);
+ }
+ return cubeCol;
}
/**
http://git-wip-us.apache.org/repos/asf/incubator-lens/blob/82553db3/lens-cube/src/main/java/org/apache/lens/cube/metadata/ExprColumn.java
----------------------------------------------------------------------
diff --git a/lens-cube/src/main/java/org/apache/lens/cube/metadata/ExprColumn.java b/lens-cube/src/main/java/org/apache/lens/cube/metadata/ExprColumn.java
index a7f711f..3fc661f 100644
--- a/lens-cube/src/main/java/org/apache/lens/cube/metadata/ExprColumn.java
+++ b/lens-cube/src/main/java/org/apache/lens/cube/metadata/ExprColumn.java
@@ -142,7 +142,7 @@ public class ExprColumn extends CubeColumn {
this.endTime = endTime;
}
- synchronized ASTNode getASTNode() {
+ public synchronized ASTNode getASTNode() {
if (astNode == null) {
try {
if (StringUtils.isNotBlank(expr)) {
http://git-wip-us.apache.org/repos/asf/incubator-lens/blob/82553db3/lens-cube/src/main/java/org/apache/lens/cube/parse/AggregateResolver.java
----------------------------------------------------------------------
diff --git a/lens-cube/src/main/java/org/apache/lens/cube/parse/AggregateResolver.java b/lens-cube/src/main/java/org/apache/lens/cube/parse/AggregateResolver.java
index 76b5729..2ad2b7c 100644
--- a/lens-cube/src/main/java/org/apache/lens/cube/parse/AggregateResolver.java
+++ b/lens-cube/src/main/java/org/apache/lens/cube/parse/AggregateResolver.java
@@ -125,7 +125,7 @@ class AggregateResolver implements ContextRewriter {
}
private void transform(CubeQueryContext cubeql, ASTNode parent, ASTNode node, int nodePos) throws SemanticException {
- if (parent == null || node == null) {
+ if (node == null) {
return;
}
int nodeType = node.getToken().getType();
@@ -135,16 +135,18 @@ class AggregateResolver implements ContextRewriter {
// Leaf node
ASTNode wrapped = wrapAggregate(cubeql, node);
if (wrapped != node) {
- parent.setChild(nodePos, wrapped);
- // Check if this node has an alias
- ASTNode sibling = HQLParser.findNodeByPath(parent, Identifier);
- String expr;
- if (sibling != null) {
- expr = HQLParser.getString(parent);
- } else {
- expr = HQLParser.getString(wrapped);
+ if (parent != null) {
+ parent.setChild(nodePos, wrapped);
+ // Check if this node has an alias
+ ASTNode sibling = HQLParser.findNodeByPath(parent, Identifier);
+ String expr;
+ if (sibling != null) {
+ expr = HQLParser.getString(parent);
+ } else {
+ expr = HQLParser.getString(wrapped);
+ }
+ cubeql.addAggregateExpr(expr.trim());
}
- cubeql.addAggregateExpr(expr.trim());
}
} else {
// Dig deeper in non-leaf nodes
@@ -176,23 +178,31 @@ class AggregateResolver implements ContextRewriter {
String msrname = StringUtils.isBlank(tabname) ? colname : tabname + "." + colname;
if (cubeql.isCubeMeasure(msrname)) {
- CubeMeasure measure = cubeql.getCube().getMeasureByName(colname);
- String aggregateFn = measure.getAggregate();
+ if (cubeql.getQueriedExprs().contains(colname)) {
+ String alias = cubeql.getAliasForTableName(cubeql.getCube().getName());
+ for (ASTNode exprNode : cubeql.getExprCtx().getExpressionContext(colname, alias).getAllASTNodes()) {
+ transform(cubeql, null, exprNode, 0);
+ }
+ return node;
+ } else {
+ CubeMeasure measure = cubeql.getCube().getMeasureByName(colname);
+ String aggregateFn = measure.getAggregate();
- if (StringUtils.isBlank(aggregateFn)) {
- throw new SemanticException(ErrorMsg.NO_DEFAULT_AGGREGATE, colname);
- }
- ASTNode fnroot = new ASTNode(new CommonToken(HiveParser.TOK_FUNCTION));
- fnroot.setParent(node.getParent());
+ if (StringUtils.isBlank(aggregateFn)) {
+ throw new SemanticException(ErrorMsg.NO_DEFAULT_AGGREGATE, colname);
+ }
+ ASTNode fnroot = new ASTNode(new CommonToken(HiveParser.TOK_FUNCTION));
+ fnroot.setParent(node.getParent());
- ASTNode fnIdentNode = new ASTNode(new CommonToken(HiveParser.Identifier, aggregateFn));
- fnIdentNode.setParent(fnroot);
- fnroot.addChild(fnIdentNode);
+ ASTNode fnIdentNode = new ASTNode(new CommonToken(HiveParser.Identifier, aggregateFn));
+ fnIdentNode.setParent(fnroot);
+ fnroot.addChild(fnIdentNode);
- node.setParent(fnroot);
- fnroot.addChild(node);
+ node.setParent(fnroot);
+ fnroot.addChild(node);
- return fnroot;
+ return fnroot;
+ }
} else {
return node;
}
@@ -208,7 +218,7 @@ class AggregateResolver implements ContextRewriter {
if (node.getChild(0).getType() == HiveParser.Identifier) {
function = BaseSemanticAnalyzer.unescapeIdentifier(node.getChild(0).getText());
}
- } else if (isMeasure(cubeql, node)) {
+ } else if (cubeql.isMeasure(node)) {
// Exit for the recursion
String colname;
@@ -219,16 +229,27 @@ class AggregateResolver implements ContextRewriter {
ASTNode colIdent = (ASTNode) node.getChild(1);
colname = colIdent.getText();
}
- CubeMeasure measure = cubeql.getCube().getMeasureByName(colname);
- if (function != null && !function.isEmpty()) {
- // Get the cube measure object and check if the passed function is the
- // default one set for this measure
- return !function.equalsIgnoreCase(measure.getAggregate());
- } else if (!aggregateResolverDisabled && measure.getAggregate() != null) {
- // not inside any aggregate, but default aggregate exists
+ colname = colname.toLowerCase();
+ if (cubeql.getQueriedExprs().contains(colname)) {
+ String cubeAlias = cubeql.getAliasForTableName(cubeql.getCube().getName());
+ for (ASTNode exprNode : cubeql.getExprCtx().getExpressionContext(colname, cubeAlias).getAllASTNodes()) {
+ if (hasMeasuresNotInDefaultAggregates(cubeql, exprNode, function, aggregateResolverDisabled)) {
+ return true;
+ }
+ }
return false;
+ } else {
+ CubeMeasure measure = cubeql.getCube().getMeasureByName(colname);
+ if (function != null && !function.isEmpty()) {
+ // Get the cube measure object and check if the passed function is the
+ // default one set for this measure
+ return !function.equalsIgnoreCase(measure.getAggregate());
+ } else if (!aggregateResolverDisabled && measure.getAggregate() != null) {
+ // not inside any aggregate, but default aggregate exists
+ return false;
+ }
+ return true;
}
- return true;
}
for (int i = 0; i < node.getChildCount(); i++) {
@@ -270,7 +291,7 @@ class AggregateResolver implements ContextRewriter {
boolean isDistinct = hasDistinct;
if (exprTokenType == HiveParser.TOK_FUNCTIONDI || exprTokenType == HiveParser.TOK_SELECTDI) {
isDistinct = true;
- } else if (isMeasure(cubeql, node) && isDistinct) {
+ } else if (cubeql.isMeasure(node) && isDistinct) {
// Exit for the recursion
return true;
}
@@ -289,7 +310,7 @@ class AggregateResolver implements ContextRewriter {
return false;
}
- if (isMeasure(cubeql, node)) {
+ if (cubeql.isMeasure(node)) {
return true;
}
@@ -302,30 +323,6 @@ class AggregateResolver implements ContextRewriter {
return false;
}
- private boolean isMeasure(CubeQueryContext cubeql, ASTNode node) {
- String tabname = null;
- String colname;
- int nodeType = node.getToken().getType();
- if (!(nodeType == HiveParser.TOK_TABLE_OR_COL || nodeType == HiveParser.DOT)) {
- return false;
- }
-
- if (nodeType == HiveParser.TOK_TABLE_OR_COL) {
- colname = ((ASTNode) node.getChild(0)).getText();
- } else {
- // node in 'alias.column' format
- ASTNode tabident = HQLParser.findNodeByPath(node, TOK_TABLE_OR_COL, Identifier);
- ASTNode colIdent = (ASTNode) node.getChild(1);
-
- colname = colIdent.getText();
- tabname = tabident.getText();
- }
-
- String msrname = StringUtils.isBlank(tabname) ? colname : tabname + "." + colname;
-
- return cubeql.isCubeMeasure(msrname);
- }
-
static void updateAggregates(ASTNode root, CubeQueryContext cubeql) {
if (root == null) {
return;
http://git-wip-us.apache.org/repos/asf/incubator-lens/blob/82553db3/lens-cube/src/main/java/org/apache/lens/cube/parse/AliasReplacer.java
----------------------------------------------------------------------
diff --git a/lens-cube/src/main/java/org/apache/lens/cube/parse/AliasReplacer.java b/lens-cube/src/main/java/org/apache/lens/cube/parse/AliasReplacer.java
index 9d367c3..4d3443c 100644
--- a/lens-cube/src/main/java/org/apache/lens/cube/parse/AliasReplacer.java
+++ b/lens-cube/src/main/java/org/apache/lens/cube/parse/AliasReplacer.java
@@ -21,18 +21,14 @@ package org.apache.lens.cube.parse;
import static org.apache.hadoop.hive.ql.parse.HiveParser.Identifier;
import static org.apache.hadoop.hive.ql.parse.HiveParser.TOK_SELEXPR;
-import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
-import org.apache.lens.cube.metadata.AbstractCubeTable;
import org.apache.lens.cube.metadata.CubeInterface;
import org.apache.lens.cube.metadata.Dimension;
import org.apache.commons.lang.StringUtils;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hive.ql.ErrorMsg;
import org.apache.hadoop.hive.ql.parse.ASTNode;
@@ -50,21 +46,20 @@ import org.antlr.runtime.CommonToken;
*/
class AliasReplacer implements ContextRewriter {
- private static final Log LOG = LogFactory.getLog(AliasReplacer.class.getName());
-
- // Mapping of a qualified column name to its table alias
- private Map<String, String> colToTableAlias;
-
public AliasReplacer(Configuration conf) {
}
@Override
public void rewriteContext(CubeQueryContext cubeql) throws SemanticException {
- colToTableAlias = new HashMap<String, String>();
+ Map<String, String> colToTableAlias = cubeql.getColToTableAlias();
extractTabAliasForCol(cubeql);
findDimAttributesAndMeasures(cubeql);
+ if (colToTableAlias.isEmpty()) {
+ return;
+ }
+
// Rewrite the all the columns in the query with table alias prefixed.
// If col1 of table tab1 is accessed, it would be changed as tab1.col1.
// If tab1 is already aliased say with t1, col1 is changed as t1.col1
@@ -76,10 +71,6 @@ class AliasReplacer implements ContextRewriter {
// 2: (TOK_SELECT (TOK_SELEXPR (. (TOK_TABLE_OR_COL src) key))
// (TOK_SELEXPR (TOK_FUNCTION count (. (TOK_TABLE_OR_COL src) value))))
// 3: (TOK_SELECT (TOK_SELEXPR (. (TOK_TABLE_OR_COL src) key) srckey))))
- if (colToTableAlias == null) {
- return;
- }
-
replaceAliases(cubeql.getSelectAST(), 0, colToTableAlias);
replaceAliases(cubeql.getHavingAST(), 0, colToTableAlias);
@@ -92,13 +83,11 @@ class AliasReplacer implements ContextRewriter {
replaceAliases(cubeql.getJoinTree(), 0, colToTableAlias);
-
// Update the aggregate expression set
AggregateResolver.updateAggregates(cubeql.getSelectAST(), cubeql);
AggregateResolver.updateAggregates(cubeql.getHavingAST(), cubeql);
// Update alias map as well
updateAliasMap(cubeql.getSelectAST(), cubeql);
-
}
/**
@@ -112,22 +101,31 @@ class AliasReplacer implements ContextRewriter {
Set<String> cubeColsQueried = cubeql.getColumnsQueried(cube.getName());
Set<String> queriedDimAttrs = new HashSet<String>();
Set<String> queriedMsrs = new HashSet<String>();
+ Set<String> queriedExprs = new HashSet<String>();
if (cubeColsQueried != null && !cubeColsQueried.isEmpty()) {
for (String col : cubeColsQueried) {
if (cube.getMeasureNames().contains(col)) {
queriedMsrs.add(col);
} else if (cube.getDimAttributeNames().contains(col)) {
queriedDimAttrs.add(col);
+ } else if (cube.getExpressionNames().contains(col)) {
+ queriedExprs.add(col);
}
}
}
cubeql.addQueriedDimAttrs(queriedDimAttrs);
cubeql.addQueriedMsrs(queriedMsrs);
+ cubeql.addQueriedExprs(queriedExprs);
}
}
private void extractTabAliasForCol(CubeQueryContext cubeql) throws SemanticException {
- Set<String> columns = cubeql.getTblAliasToColumns().get(CubeQueryContext.DEFAULT_TABLE);
+ extractTabAliasForCol(cubeql.getColToTableAlias(), cubeql, cubeql);
+ }
+
+ static void extractTabAliasForCol(Map<String, String> colToTableAlias, CubeQueryContext cubeql,
+ TrackQueriedColumns tqc) throws SemanticException {
+ Set<String> columns = tqc.getTblAliasToColumns().get(CubeQueryContext.DEFAULT_TABLE);
if (columns == null) {
return;
}
@@ -136,8 +134,9 @@ class AliasReplacer implements ContextRewriter {
if (cubeql.getCube() != null) {
Set<String> cols = cubeql.getCube().getAllFieldNames();
if (cols.contains(col.toLowerCase())) {
- colToTableAlias.put(col.toLowerCase(), cubeql.getAliasForTableName(cubeql.getCube().getName()));
- cubeql.addColumnsQueried((AbstractCubeTable) cubeql.getCube(), col.toLowerCase());
+ String cubeAlias = cubeql.getAliasForTableName(cubeql.getCube().getName());
+ colToTableAlias.put(col.toLowerCase(), cubeAlias);
+ tqc.addColumnsQueried(cubeAlias, col.toLowerCase());
inCube = true;
}
}
@@ -148,8 +147,9 @@ class AliasReplacer implements ContextRewriter {
if (prevDim != null && !prevDim.equals(dim.getName())) {
throw new SemanticException(ErrorMsg.AMBIGOUS_DIM_COLUMN, col, prevDim, dim.getName());
}
- colToTableAlias.put(col.toLowerCase(), cubeql.getAliasForTableName(dim.getName()));
- cubeql.addColumnsQueried(dim, col.toLowerCase());
+ String dimAlias = cubeql.getAliasForTableName(dim.getName());
+ colToTableAlias.put(col.toLowerCase(), dimAlias);
+ tqc.addColumnsQueried(dimAlias, col.toLowerCase());
} else {
// throw error because column is in both cube and dimension table
throw new SemanticException(ErrorMsg.AMBIGOUS_CUBE_COLUMN, col, cubeql.getCube().getName(), dim.getName());
@@ -162,7 +162,7 @@ class AliasReplacer implements ContextRewriter {
}
}
- private void replaceAliases(ASTNode node, int nodePos, Map<String, String> colToTableAlias) {
+ static void replaceAliases(ASTNode node, int nodePos, Map<String, String> colToTableAlias) {
if (node == null) {
return;
}
@@ -211,7 +211,7 @@ class AliasReplacer implements ContextRewriter {
}
}
- private void updateAliasMap(ASTNode root, CubeQueryContext cubeql) {
+ static void updateAliasMap(ASTNode root, CubeQueryContext cubeql) {
if (root == null) {
return;
}
http://git-wip-us.apache.org/repos/asf/incubator-lens/blob/82553db3/lens-cube/src/main/java/org/apache/lens/cube/parse/CandidateFact.java
----------------------------------------------------------------------
diff --git a/lens-cube/src/main/java/org/apache/lens/cube/parse/CandidateFact.java b/lens-cube/src/main/java/org/apache/lens/cube/parse/CandidateFact.java
index 52bf9aa..63d2508 100644
--- a/lens-cube/src/main/java/org/apache/lens/cube/parse/CandidateFact.java
+++ b/lens-cube/src/main/java/org/apache/lens/cube/parse/CandidateFact.java
@@ -67,6 +67,7 @@ public class CandidateFact implements CandidateTable {
private ASTNode whereAST;
private ASTNode groupbyAST;
private ASTNode havingAST;
+ private ASTNode joinTree;
private List<TimeRangeNode> timenodes = Lists.newArrayList();
private final List<Integer> selectIndices = Lists.newArrayList();
private final List<Integer> dimFieldIndices = Lists.newArrayList();
@@ -140,6 +141,9 @@ public class CandidateFact implements CandidateTable {
public void copyASTs(CubeQueryContext cubeql) throws SemanticException {
this.selectAST = HQLParser.copyAST(cubeql.getSelectAST());
this.whereAST = HQLParser.copyAST(cubeql.getWhereAST());
+ if (cubeql.getJoinTree() != null) {
+ this.joinTree = HQLParser.copyAST(cubeql.getJoinTree());
+ }
if (cubeql.getGroupByAST() != null) {
this.groupbyAST = HQLParser.copyAST(cubeql.getGroupByAST());
}
@@ -180,13 +184,13 @@ public class CandidateFact implements CandidateTable {
* @throws SemanticException
*/
public void updateASTs(CubeQueryContext cubeql) throws SemanticException {
- Set<String> cubeColsQueried = cubeql.getColumnsQueried(cubeql.getCube().getName());
+ Set<String> cubeCols = cubeql.getCube().getAllFieldNames();
// update select AST with selected fields
int currentChild = 0;
for (int i = 0; i < cubeql.getSelectAST().getChildCount(); i++) {
ASTNode selectExpr = (ASTNode) this.selectAST.getChild(currentChild);
- Set<String> exprCols = getColsInExpr(cubeColsQueried, selectExpr);
+ Set<String> exprCols = getColsInExpr(cubeCols, selectExpr);
if (getColumns().containsAll(exprCols)) {
selectIndices.add(i);
if (cubeql.getQueriedDimAttrs().containsAll(exprCols)) {
@@ -419,4 +423,8 @@ public class CandidateFact implements CandidateTable {
}
return timePartDimensions;
}
+
+ public ASTNode getJoinTree() {
+ return joinTree;
+ }
}
http://git-wip-us.apache.org/repos/asf/incubator-lens/blob/82553db3/lens-cube/src/main/java/org/apache/lens/cube/parse/CandidateTablePruneCause.java
----------------------------------------------------------------------
diff --git a/lens-cube/src/main/java/org/apache/lens/cube/parse/CandidateTablePruneCause.java b/lens-cube/src/main/java/org/apache/lens/cube/parse/CandidateTablePruneCause.java
index 8c009b2..5a1f8f9 100644
--- a/lens-cube/src/main/java/org/apache/lens/cube/parse/CandidateTablePruneCause.java
+++ b/lens-cube/src/main/java/org/apache/lens/cube/parse/CandidateTablePruneCause.java
@@ -58,6 +58,16 @@ public class CandidateTablePruneCause {
MORE_PARTITIONS("Picked table has more partitions than minimum"),
// invalid cube table
INVALID("Invalid cube table provided in query"),
+ // expression is not evaluable in the candidate
+ EXPRESSION_NOT_EVALUABLE("%s expressions not evaluable") {
+ Object[] getFormatPlaceholders(Set<CandidateTablePruneCause> causes) {
+ List<String> columns = new ArrayList<String>();
+ for (CandidateTablePruneCause cause : causes) {
+ columns.addAll(cause.getMissingExpressions());
+ }
+ return new String[]{columns.toString()};
+ }
+ },
// column not valid in cube table
COLUMN_NOT_VALID("Column not valid in cube table"),
// column not found in cube table
@@ -206,6 +216,8 @@ public class CandidateTablePruneCause {
private List<String> missingUpdatePeriods;
// populated in case of missing columns
private List<String> missingColumns;
+ // populated in case of expressions not evaluable
+ private List<String> missingExpressions;
// populated in case of no column part of a join path
private List<String> joinColumns;
// the columns that are missing default aggregate. only set in case of MISSING_DEFAULT_AGGREGATE
@@ -227,9 +239,11 @@ public class CandidateTablePruneCause {
return cause;
}
- public static CandidateTablePruneCause columnNotFound(Collection<String> missingColumns) {
+ public static CandidateTablePruneCause columnNotFound(Collection<String>... missingColumns) {
List<String> colList = new ArrayList<String>();
- colList.addAll(missingColumns);
+ for (Collection<String> missing : missingColumns) {
+ colList.addAll(missing);
+ }
CandidateTablePruneCause cause = new CandidateTablePruneCause(CandidateTablePruneCode.COLUMN_NOT_FOUND);
cause.setMissingColumns(colList);
return cause;
@@ -243,6 +257,16 @@ public class CandidateTablePruneCause {
return columnNotFound(colList);
}
+ public static CandidateTablePruneCause expressionNotEvaluable(String... exprs) {
+ List<String> colList = new ArrayList<String>();
+ for (String column : exprs) {
+ colList.add(column);
+ }
+ CandidateTablePruneCause cause = new CandidateTablePruneCause(CandidateTablePruneCode.EXPRESSION_NOT_EVALUABLE);
+ cause.setMissingExpressions(colList);
+ return cause;
+ }
+
public static CandidateTablePruneCause missingPartitions(Set<String> nonExistingParts) {
CandidateTablePruneCause cause =
new CandidateTablePruneCause(CandidateTablePruneCode.MISSING_PARTITIONS);
http://git-wip-us.apache.org/repos/asf/incubator-lens/blob/82553db3/lens-cube/src/main/java/org/apache/lens/cube/parse/CandidateTableResolver.java
----------------------------------------------------------------------
diff --git a/lens-cube/src/main/java/org/apache/lens/cube/parse/CandidateTableResolver.java b/lens-cube/src/main/java/org/apache/lens/cube/parse/CandidateTableResolver.java
index 40561ad..d56fb80 100644
--- a/lens-cube/src/main/java/org/apache/lens/cube/parse/CandidateTableResolver.java
+++ b/lens-cube/src/main/java/org/apache/lens/cube/parse/CandidateTableResolver.java
@@ -248,44 +248,76 @@ class CandidateTableResolver implements ContextRewriter {
}
}
}
+ // go over expressions queried
+ // if expression has no measures, prune facts which cannot evaluate expression
+ // if expression has measures, they should be considered along with other measures and see if the fact can be
+ // part of measure covering set
+ for (String expr : cubeql.getQueriedExprs()) {
+ cubeql.getExprCtx().updateEvaluables(expr, cfact);
+ if (!cubeql.getQueriedExprsWithMeasures().contains(expr) && !cubeql.getExprCtx().isEvaluable(expr, cfact)) {
+ // if expression has no measures, prune facts which cannot evaluate expression
+ LOG.info("Not considering fact table:" + cfact + " as expression " + expr + " is not evaluatable");
+ cubeql.addFactPruningMsgs(cfact.fact, CandidateTablePruneCause.expressionNotEvaluable(expr));
+ toRemove = true;
+ break;
+ }
+ }
// check if the candidate fact has atleast one measure queried
- if (!checkForColumnExists(cfact, queriedMsrs)) {
+ // if expression has measures, they should be considered along with other measures and see if the fact can be
+ // part of measure covering set
+ if (!checkForColumnExists(cfact, queriedMsrs)
+ && (cubeql.getQueriedExprsWithMeasures().isEmpty()
+ || cubeql.getExprCtx().allNotEvaluable(cubeql.getQueriedExprsWithMeasures(), cfact))) {
LOG.info("Not considering fact table:" + cfact + " as columns " + queriedMsrs + " is not available");
- cubeql.addFactPruningMsgs(cfact.fact, CandidateTablePruneCause.columnNotFound(queriedMsrs));
+ cubeql.addFactPruningMsgs(cfact.fact, CandidateTablePruneCause.columnNotFound(queriedMsrs,
+ cubeql.getQueriedExprsWithMeasures()));
toRemove = true;
}
if (toRemove) {
i.remove();
}
}
+ Set<String> dimExprs = new HashSet<String>(cubeql.getQueriedExprs());
+ dimExprs.removeAll(cubeql.getQueriedExprsWithMeasures());
+ if (cubeql.getCandidateFacts().size() == 0) {
+ throw new SemanticException(ErrorMsg.NO_FACT_HAS_COLUMN,
+ (!queriedDimAttrs.isEmpty() ? queriedDimAttrs.toString() : "")
+ + (!dimExprs.isEmpty() ? dimExprs.toString() : ""));
+ }
// Find out candidate fact table sets which contain all the measures
// queried
List<CandidateFact> cfacts = new ArrayList<CandidateFact>(cubeql.getCandidateFacts());
- Set<Set<CandidateFact>> cfactset = findCoveringSets(cfacts, queriedMsrs);
+ Set<Set<CandidateFact>> cfactset = findCoveringSets(cubeql, cfacts, queriedMsrs,
+ cubeql.getQueriedExprsWithMeasures());
LOG.info("Measure covering fact sets :" + cfactset);
+ String msrString = (!queriedMsrs.isEmpty() ? queriedMsrs.toString() : "")
+ + (!cubeql.getQueriedExprsWithMeasures().isEmpty() ? cubeql.getQueriedExprsWithMeasures().toString() : "");
if (cfactset.isEmpty()) {
- throw new SemanticException(ErrorMsg.NO_FACT_HAS_COLUMN, queriedMsrs.toString());
+ throw new SemanticException(ErrorMsg.NO_FACT_HAS_COLUMN, msrString);
}
cubeql.getCandidateFactSets().addAll(cfactset);
- cubeql.pruneCandidateFactWithCandidateSet(CandidateTablePruneCode.COLUMN_NOT_FOUND);
+ cubeql.pruneCandidateFactWithCandidateSet(CandidateTablePruneCause.columnNotFound(queriedMsrs,
+ cubeql.getQueriedExprsWithMeasures()));
if (cubeql.getCandidateFacts().size() == 0) {
- throw new SemanticException(ErrorMsg.NO_FACT_HAS_COLUMN, queriedDimAttrs.toString());
+ throw new SemanticException(ErrorMsg.NO_FACT_HAS_COLUMN, msrString);
}
}
}
- static Set<Set<CandidateFact>> findCoveringSets(List<CandidateFact> cfactsPassed, Set<String> msrs) {
+ static Set<Set<CandidateFact>> findCoveringSets(CubeQueryContext cubeql, List<CandidateFact> cfactsPassed,
+ Set<String> msrs, Set<String> exprsWithMeasures) {
Set<Set<CandidateFact>> cfactset = new HashSet<Set<CandidateFact>>();
List<CandidateFact> cfacts = new ArrayList<CandidateFact>(cfactsPassed);
for (Iterator<CandidateFact> i = cfacts.iterator(); i.hasNext();) {
CandidateFact cfact = i.next();
i.remove();
- if (!checkForColumnExists(cfact, msrs)) {
+ if (!checkForColumnExists(cfact, msrs)
+ && (exprsWithMeasures.isEmpty() || cubeql.getExprCtx().allNotEvaluable(exprsWithMeasures, cfact))) {
// check if fact contains any of the maeasures
// if not ignore the fact
continue;
- } else if (cfact.getColumns().containsAll(msrs)) {
+ } else if (cfact.getColumns().containsAll(msrs) && cubeql.getExprCtx().allEvaluable(cfact, exprsWithMeasures)) {
// return single set
Set<CandidateFact> one = new LinkedHashSet<CandidateFact>();
one.add(cfact);
@@ -293,15 +325,17 @@ class CandidateTableResolver implements ContextRewriter {
} else {
// find the remaining measures in other facts
Set<String> remainingMsrs = new HashSet<String>(msrs);
+ Set<String> remainingExprs = new HashSet<String>(exprsWithMeasures);
remainingMsrs.removeAll(cfact.getColumns());
- Set<Set<CandidateFact>> coveringSets = findCoveringSets(cfacts, remainingMsrs);
+ remainingExprs.removeAll(cubeql.getExprCtx().coveringExpressions(exprsWithMeasures, cfact));
+ Set<Set<CandidateFact>> coveringSets = findCoveringSets(cubeql, cfacts, remainingMsrs, remainingExprs);
if (!coveringSets.isEmpty()) {
for (Set<CandidateFact> set : coveringSets) {
set.add(cfact);
cfactset.add(set);
}
} else {
- LOG.info("Couldnt find any set containing remaining measures:" + remainingMsrs);
+ LOG.info("Couldnt find any set containing remaining measures:" + remainingMsrs + " " + remainingExprs);
}
}
}
@@ -503,9 +537,20 @@ class CandidateTableResolver implements ContextRewriter {
if (cubeql.getColumnsQueried(dim.getName()) != null) {
for (String col : cubeql.getColumnsQueried(dim.getName())) {
if (!cdim.getColumns().contains(col.toLowerCase())) {
- // check if it available as reference, if not remove the
- // candidate
- if (!cubeql.getDeNormCtx().addRefUsage(cdim, col, dim.getName())) {
+ // check if the column is an expression
+ if (cdim.getBaseTable().getExpressionNames().contains(col)) {
+ cubeql.getExprCtx().updateEvaluables(col, cdim);
+ // check if the expression is evaluatable
+ if (!cubeql.getExprCtx().isEvaluable(col, cdim)) {
+ LOG.info("Not considering dimtable:" + cdim + " as expression " + col + " is not evaluatable");
+ cubeql.addDimPruningMsgs(dim, cdim.getTable(), CandidateTablePruneCause.expressionNotEvaluable(
+ col));
+ i.remove();
+ break;
+ }
+ } else if (!cubeql.getDeNormCtx().addRefUsage(cdim, col, dim.getName())) {
+ // check if it available as reference, if not remove the
+ // candidate
LOG.info("Not considering dimtable:" + cdim + " as column " + col + " is not available");
cubeql.addDimPruningMsgs(dim, cdim.getTable(), CandidateTablePruneCause.columnNotFound(col));
i.remove();
http://git-wip-us.apache.org/repos/asf/incubator-lens/blob/82553db3/lens-cube/src/main/java/org/apache/lens/cube/parse/ColumnResolver.java
----------------------------------------------------------------------
diff --git a/lens-cube/src/main/java/org/apache/lens/cube/parse/ColumnResolver.java b/lens-cube/src/main/java/org/apache/lens/cube/parse/ColumnResolver.java
index 1aa33db..0849381 100644
--- a/lens-cube/src/main/java/org/apache/lens/cube/parse/ColumnResolver.java
+++ b/lens-cube/src/main/java/org/apache/lens/cube/parse/ColumnResolver.java
@@ -28,7 +28,6 @@ import org.apache.lens.cube.parse.HQLParser.TreeNode;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hive.ql.ErrorMsg;
-import org.apache.hadoop.hive.ql.metadata.HiveException;
import org.apache.hadoop.hive.ql.parse.ASTNode;
import org.apache.hadoop.hive.ql.parse.SemanticException;
@@ -60,27 +59,24 @@ class ColumnResolver implements ContextRewriter {
}
getColsForSelectTree(cubeql);
getColsForWhereTree(cubeql);
- getColsForTree(cubeql, cubeql.getJoinTree());
- getColsForTree(cubeql, cubeql.getGroupByAST());
- getColsForTree(cubeql, cubeql.getHavingAST());
- getColsForTree(cubeql, cubeql.getOrderByAST());
+ getColsForTree(cubeql, cubeql.getJoinTree(), cubeql);
+ getColsForTree(cubeql, cubeql.getGroupByAST(), cubeql);
+ getColsForTree(cubeql, cubeql.getHavingAST(), cubeql);
+ getColsForTree(cubeql, cubeql.getOrderByAST(), cubeql);
// Update join dimension tables
for (String table : cubeql.getTblAliasToColumns().keySet()) {
- try {
- if (!CubeQueryContext.DEFAULT_TABLE.equalsIgnoreCase(table)) {
- if (!cubeql.addQueriedTable(table)) {
- throw new SemanticException(ErrorMsg.NEITHER_CUBE_NOR_DIMENSION);
- }
+ if (!CubeQueryContext.DEFAULT_TABLE.equalsIgnoreCase(table)) {
+ if (!cubeql.addQueriedTable(table)) {
+ throw new SemanticException(ErrorMsg.NEITHER_CUBE_NOR_DIMENSION);
}
- } catch (HiveException e) {
- throw new SemanticException(e);
}
}
}
// finds columns in AST passed.
- private void getColsForTree(final CubeQueryContext cubeql, ASTNode tree) throws SemanticException {
+ static void getColsForTree(final CubeQueryContext cubeql, ASTNode tree, final TrackQueriedColumns tqc)
+ throws SemanticException {
if (tree == null) {
return;
}
@@ -104,7 +100,7 @@ class ColumnResolver implements ContextRewriter {
// column is an existing alias
return;
}
- cubeql.addColumnsQueried(CubeQueryContext.DEFAULT_TABLE, column);
+ tqc.addColumnsQueried(CubeQueryContext.DEFAULT_TABLE, column);
} else if (node.getToken().getType() == DOT) {
// This is for the case where column name is prefixed by table name
// or table alias
@@ -116,7 +112,7 @@ class ColumnResolver implements ContextRewriter {
String column = colIdent.getText().toLowerCase();
String table = tabident.getText().toLowerCase();
- cubeql.addColumnsQueried(table, column);
+ tqc.addColumnsQueried(table, column);
}
}
});
http://git-wip-us.apache.org/repos/asf/incubator-lens/blob/82553db3/lens-cube/src/main/java/org/apache/lens/cube/parse/CubeQueryContext.java
----------------------------------------------------------------------
diff --git a/lens-cube/src/main/java/org/apache/lens/cube/parse/CubeQueryContext.java b/lens-cube/src/main/java/org/apache/lens/cube/parse/CubeQueryContext.java
index 3964c1a..0409af3 100644
--- a/lens-cube/src/main/java/org/apache/lens/cube/parse/CubeQueryContext.java
+++ b/lens-cube/src/main/java/org/apache/lens/cube/parse/CubeQueryContext.java
@@ -19,6 +19,9 @@
package org.apache.lens.cube.parse;
+import static org.apache.hadoop.hive.ql.parse.HiveParser.Identifier;
+import static org.apache.hadoop.hive.ql.parse.HiveParser.TOK_TABLE_OR_COL;
+
import static org.apache.hadoop.hive.ql.parse.HiveParser.TOK_TMP_FILE;
import java.io.ByteArrayOutputStream;
@@ -45,7 +48,7 @@ import lombok.Getter;
import lombok.Setter;
import lombok.ToString;
-public class CubeQueryContext {
+public class CubeQueryContext implements TrackQueriedColumns {
public static final String TIME_RANGE_FUNC = "time_range_in";
public static final String NOW = "now";
public static final String DEFAULT_TABLE = "_default_";
@@ -78,6 +81,16 @@ public class CubeQueryContext {
@Getter
private final Set<String> queriedMsrs = new HashSet<String>();
+ @Getter
+ private final Set<String> queriedExprs = new HashSet<String>();
+
+ @Getter
+ private final Set<String> queriedExprsWithMeasures = new HashSet<String>();
+
+ @Getter
+ // Mapping of a qualified column name to its table alias
+ private final Map<String, String> colToTableAlias = new HashMap<String, String>();
+
@Getter()
private final Set<Set<CandidateFact>> candidateFactSets = new HashSet<Set<CandidateFact>>();
@@ -134,6 +147,9 @@ public class CubeQueryContext {
private JoinResolver.AutoJoinContext autoJoinCtx;
@Getter
@Setter
+ private ExpressionResolver.ExpressionResolverContext exprCtx;
+ @Getter
+ @Setter
private DenormalizationResolver.DenormalizationContext deNormCtx;
@Getter
private PruneCauses<CubeFactTable> factPruningMsgs =
@@ -341,7 +357,7 @@ public class CubeQueryContext {
boolean isRequiredInJoinChain = false;
}
- public void addOptionalDimTable(String alias, String col, CandidateTable candidate, boolean isRequiredInJoin)
+ public void addOptionalDimTable(String alias, CandidateTable candidate, boolean isRequiredInJoin, String... cols)
throws SemanticException {
alias = alias.toLowerCase();
try {
@@ -354,8 +370,10 @@ public class CubeQueryContext {
optDim = new OptionalDimCtx();
optionalDimensions.put(dim, optDim);
}
- if (col != null && candidate != null) {
- optDim.colQueried.add(col);
+ if (cols != null && candidate != null) {
+ for (String col : cols) {
+ optDim.colQueried.add(col);
+ }
optDim.requiredForCandidates.add(candidate);
}
if (!optDim.isRequiredInJoinChain) {
@@ -413,7 +431,7 @@ public class CubeQueryContext {
return cubeTblEntry.getKey();
}
}
- return tableName;
+ return tableName.toLowerCase();
}
public void print() {
@@ -784,6 +802,22 @@ public class CubeQueryContext {
}
}
+ // pick dimension tables required during expression expansion for the picked fact and dimensions
+ Set<Dimension> exprDimTables = new HashSet<Dimension>();
+ if (cfacts != null) {
+ for (CandidateFact cfact : cfacts) {
+ Set<Dimension> factExprDimTables = exprCtx.rewriteExprCtx(cfact, dimsToQuery, cfacts.size() > 1);
+ exprDimTables.addAll(factExprDimTables);
+ if (cfacts.size() > 1) {
+ factDimMap.get(cfact).addAll(factExprDimTables);
+ }
+ }
+ } else {
+ // dim only query
+ exprDimTables.addAll(exprCtx.rewriteExprCtx(null, dimsToQuery, false));
+ }
+ dimsToQuery.putAll(pickCandidateDimsToQuery(exprDimTables));
+
// pick denorm tables for the picked fact and dimensions
Set<Dimension> denormTables = new HashSet<Dimension>();
if (cfacts != null) {
@@ -891,25 +925,57 @@ public class CubeQueryContext {
String[] split = StringUtils.split(col, ".");
if (split.length <= 1) {
- return cube.getMeasureNames().contains(col.trim().toLowerCase());
+ col = col.trim().toLowerCase();
+ if (queriedExprs.contains(col)) {
+ return exprCtx.getExpressionContext(col, getAliasForTableName(cube.getName())).isHasMeasures();
+ } else {
+ return cube.getMeasureNames().contains(col);
+ }
} else {
- String cubeName = split[0].trim();
- String colName = split[1].trim();
- if (cubeName.equalsIgnoreCase(cube.getName())
- || cubeName.equalsIgnoreCase(getAliasForTableName(cube.getName()))) {
- return cube.getMeasureNames().contains(colName.toLowerCase());
+ String cubeName = split[0].trim().toLowerCase();
+ String colName = split[1].trim().toLowerCase();
+ if (cubeName.equalsIgnoreCase(cube.getName()) || cubeName.equals(getAliasForTableName(cube.getName()))) {
+ if (queriedExprs.contains(colName)) {
+ return exprCtx.getExpressionContext(colName, cubeName).isHasMeasures();
+ } else {
+ return cube.getMeasureNames().contains(colName.toLowerCase());
+ }
} else {
return false;
}
}
}
+ boolean isMeasure(ASTNode node) {
+ String tabname = null;
+ String colname;
+ int nodeType = node.getToken().getType();
+ if (!(nodeType == HiveParser.TOK_TABLE_OR_COL || nodeType == HiveParser.DOT)) {
+ return false;
+ }
+
+ if (nodeType == HiveParser.TOK_TABLE_OR_COL) {
+ colname = ((ASTNode) node.getChild(0)).getText();
+ } else {
+ // node in 'alias.column' format
+ ASTNode tabident = HQLParser.findNodeByPath(node, TOK_TABLE_OR_COL, Identifier);
+ ASTNode colIdent = (ASTNode) node.getChild(1);
+
+ colname = colIdent.getText();
+ tabname = tabident.getText();
+ }
+
+ String msrname = StringUtils.isBlank(tabname) ? colname : tabname + "." + colname;
+
+ return isCubeMeasure(msrname);
+ }
+
public boolean isAggregateExpr(String expr) {
return aggregateExprs.contains(expr == null ? null : expr.toLowerCase());
}
public boolean hasAggregates() {
- return !aggregateExprs.isEmpty();
+ return !aggregateExprs.isEmpty() || getExprCtx().hasAggregates();
}
public String getAlias(String expr) {
@@ -1035,6 +1101,14 @@ public class CubeQueryContext {
queriedMsrs.addAll(msrs);
}
+ public void addQueriedExprs(Set<String> exprs) {
+ queriedExprs.addAll(exprs);
+ }
+
+ public void addQueriedExprsWithMeasures(Set<String> exprs) {
+ queriedExprsWithMeasures.addAll(exprs);
+ }
+
/**
* Prune candidate fact sets with respect to available candidate facts.
* <p/>
http://git-wip-us.apache.org/repos/asf/incubator-lens/blob/82553db3/lens-cube/src/main/java/org/apache/lens/cube/parse/CubeQueryRewriter.java
----------------------------------------------------------------------
diff --git a/lens-cube/src/main/java/org/apache/lens/cube/parse/CubeQueryRewriter.java b/lens-cube/src/main/java/org/apache/lens/cube/parse/CubeQueryRewriter.java
index b7a92e7..57c91e7 100644
--- a/lens-cube/src/main/java/org/apache/lens/cube/parse/CubeQueryRewriter.java
+++ b/lens-cube/src/main/java/org/apache/lens/cube/parse/CubeQueryRewriter.java
@@ -132,15 +132,15 @@ public class CubeQueryRewriter {
* removed.
*/
private void setupRewriters() {
- // Rewrite base trees with expressions expanded
- rewriters.add(new ExpressionResolver(conf));
// Resolve columns - the column alias and table alias
rewriters.add(new ColumnResolver(conf));
// Rewrite base trees (groupby, having, orderby, limit) using aliases
rewriters.add(new AliasReplacer(conf));
+ ExpressionResolver exprResolver = new ExpressionResolver(conf);
DenormalizationResolver denormResolver = new DenormalizationResolver(conf);
CandidateTableResolver candidateTblResolver = new CandidateTableResolver(conf);
StorageTableResolver storageTableResolver = new StorageTableResolver(conf);
+ rewriters.add(exprResolver);
// De-normalized columns resolved
rewriters.add(denormResolver);
// Resolve candidate fact tables and dimension tables for columns queried
@@ -160,18 +160,21 @@ public class CubeQueryRewriter {
// Phase 1: resolve fact tables.
rewriters.add(storageTableResolver);
if (lightFactFirst) {
+ // Prune candidate tables for which denorm column references do not exist
+ rewriters.add(denormResolver);
+ // Prune candidate facts without any valid expressions
+ rewriters.add(exprResolver);
rewriters.add(new LightestFactResolver(conf));
}
// Phase 2: resolve fact table partitions.
rewriters.add(storageTableResolver);
rewriters.add(new MaxCoveringFactResolver(conf));
- if (!lightFactFirst) {
- rewriters.add(new LightestFactResolver(conf));
- }
// Phase 3: resolve dimension tables and partitions.
rewriters.add(storageTableResolver);
- // Check for candidate tables using de-normalized columns
+ // Prune candidate tables for which denorm column references do not exist
rewriters.add(denormResolver);
+ // Prune candidate facts without any valid expressions
+ rewriters.add(exprResolver);
rewriters.add(new LeastPartitionResolver(conf));
if (!lightFactFirst) {
rewriters.add(new LightestFactResolver(conf));
http://git-wip-us.apache.org/repos/asf/incubator-lens/blob/82553db3/lens-cube/src/main/java/org/apache/lens/cube/parse/DenormalizationResolver.java
----------------------------------------------------------------------
diff --git a/lens-cube/src/main/java/org/apache/lens/cube/parse/DenormalizationResolver.java b/lens-cube/src/main/java/org/apache/lens/cube/parse/DenormalizationResolver.java
index e0f7bea..1a7b6b4 100644
--- a/lens-cube/src/main/java/org/apache/lens/cube/parse/DenormalizationResolver.java
+++ b/lens-cube/src/main/java/org/apache/lens/cube/parse/DenormalizationResolver.java
@@ -25,6 +25,8 @@ import java.util.*;
import org.apache.lens.cube.metadata.*;
import org.apache.lens.cube.parse.CandidateTablePruneCause.CandidateTablePruneCode;
+import org.apache.lens.cube.parse.ExpressionResolver.ExprSpecContext;
+import org.apache.lens.cube.parse.ExpressionResolver.ExpressionContext;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
@@ -150,11 +152,11 @@ public class DenormalizationResolver implements ContextRewriter {
refCols.add(refer);
// Add to optional tables
if (refer.col.isChainedColumn()) {
- cubeql.addOptionalDimTable(refer.col.getChainName(), refer.col.getRefColumn(), table, false);
+ cubeql.addOptionalDimTable(refer.col.getChainName(), table, false, refer.col.getRefColumn());
} else {
for (TableReference reference : refer.col.getReferences()) {
- cubeql.addOptionalDimTable(reference.getDestTable(), reference.getDestColumn(), table, false);
+ cubeql.addOptionalDimTable(reference.getDestTable(), table, false, reference.getDestColumn());
}
}
return true;
@@ -317,6 +319,32 @@ public class DenormalizationResolver implements ContextRewriter {
}
}
+ private void addRefColsQueried(CubeQueryContext cubeql, TrackQueriedColumns tqc, DenormalizationContext denormCtx) {
+ for (Map.Entry<String, Set<String>> entry : tqc.getTblAliasToColumns().entrySet()) {
+ // skip default alias
+ if (entry.getKey() == CubeQueryContext.DEFAULT_TABLE) {
+ continue;
+ }
+ // skip join chain aliases
+ if (cubeql.getJoinchains().keySet().contains(entry.getKey().toLowerCase())) {
+ continue;
+ }
+ AbstractCubeTable tbl = cubeql.getCubeTableForAlias(entry.getKey());
+ Set<String> columns = entry.getValue();
+ for (String column : columns) {
+ CubeColumn col;
+ if (tbl instanceof CubeInterface) {
+ col = ((CubeInterface) tbl).getColumnByName(column);
+ } else {
+ col = ((Dimension) tbl).getColumnByName(column);
+ }
+ if (col instanceof ReferencedDimAtrribute) {
+ // considering all referenced dimensions to be denormalized columns
+ denormCtx.addReferencedCol(column, new ReferencedQueriedColumn((ReferencedDimAtrribute) col, tbl));
+ }
+ }
+ }
+ }
/**
* Find all de-normalized columns, if these columns are not directly available in candidate tables, query will be
* replaced with the corresponding table reference
@@ -328,27 +356,13 @@ public class DenormalizationResolver implements ContextRewriter {
// Adds all the reference dimensions as eligible for denorm fields
denormCtx = new DenormalizationContext(cubeql);
cubeql.setDeNormCtx(denormCtx);
- for (Map.Entry<String, Set<String>> entry : cubeql.getTblAliasToColumns().entrySet()) {
- // skip default alias
- if (entry.getKey() == CubeQueryContext.DEFAULT_TABLE) {
- continue;
- }
- // skip join chain aliases
- if (cubeql.getJoinchains().keySet().contains(entry.getKey().toLowerCase())) {
- continue;
- }
- AbstractCubeTable tbl = cubeql.getCubeTableForAlias(entry.getKey());
- Set<String> columns = entry.getValue();
- for (String column : columns) {
- CubeColumn col;
- if (tbl instanceof CubeInterface) {
- col = ((CubeInterface) tbl).getColumnByName(column);
- } else {
- col = ((Dimension) tbl).getColumnByName(column);
- }
- if (col instanceof ReferencedDimAtrribute) {
- // considering all referenced dimensions to be denormalized columns
- denormCtx.addReferencedCol(column, new ReferencedQueriedColumn((ReferencedDimAtrribute) col, tbl));
+ // add ref columns in cube
+ addRefColsQueried(cubeql, cubeql, denormCtx);
+ // add ref columns from expressions
+ for (Set<ExpressionContext> ecSet : cubeql.getExprCtx().getAllExprsQueried().values()) {
+ for (ExpressionContext ec : ecSet) {
+ for (ExprSpecContext esc : ec.getAllExprs()) {
+ addRefColsQueried(cubeql, esc, denormCtx);
}
}
}
http://git-wip-us.apache.org/repos/asf/incubator-lens/blob/82553db3/lens-cube/src/main/java/org/apache/lens/cube/parse/ExpressionResolver.java
----------------------------------------------------------------------
diff --git a/lens-cube/src/main/java/org/apache/lens/cube/parse/ExpressionResolver.java b/lens-cube/src/main/java/org/apache/lens/cube/parse/ExpressionResolver.java
index 5355049..f2a7039 100644
--- a/lens-cube/src/main/java/org/apache/lens/cube/parse/ExpressionResolver.java
+++ b/lens-cube/src/main/java/org/apache/lens/cube/parse/ExpressionResolver.java
@@ -19,129 +19,692 @@
package org.apache.lens.cube.parse;
-import static org.apache.hadoop.hive.ql.parse.HiveParser.*;
+import static org.apache.hadoop.hive.ql.parse.HiveParser.DOT;
+import static org.apache.hadoop.hive.ql.parse.HiveParser.Identifier;
+import static org.apache.hadoop.hive.ql.parse.HiveParser.TOK_TABLE_OR_COL;
+
+import java.util.*;
import org.apache.lens.cube.metadata.AbstractBaseTable;
-import org.apache.lens.cube.metadata.DerivedCube;
+import org.apache.lens.cube.metadata.AbstractCubeTable;
+import org.apache.lens.cube.metadata.CubeColumn;
+import org.apache.lens.cube.metadata.CubeInterface;
import org.apache.lens.cube.metadata.Dimension;
import org.apache.lens.cube.metadata.ExprColumn;
+import org.apache.lens.cube.metadata.ExprColumn.ExprSpec;
import org.apache.lens.cube.parse.HQLParser.ASTNodeVisitor;
import org.apache.lens.cube.parse.HQLParser.TreeNode;
import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.hive.ql.ErrorMsg;
+import org.apache.hadoop.hive.ql.metadata.HiveException;
import org.apache.hadoop.hive.ql.parse.ASTNode;
import org.apache.hadoop.hive.ql.parse.HiveParser;
import org.apache.hadoop.hive.ql.parse.SemanticException;
import org.antlr.runtime.CommonToken;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NonNull;
+import lombok.ToString;
+import lombok.extern.slf4j.Slf4j;
+
/**
* Replaces expression with its AST in all query ASTs
*/
+@Slf4j
class ExpressionResolver implements ContextRewriter {
public ExpressionResolver(Configuration conf) {
}
- @Override
- public void rewriteContext(CubeQueryContext cubeql) throws SemanticException {
- resolveClause(cubeql, cubeql.getSelectAST());
- resolveClause(cubeql, cubeql.getWhereAST());
- resolveClause(cubeql, cubeql.getJoinTree());
- resolveClause(cubeql, cubeql.getGroupByAST());
- resolveClause(cubeql, cubeql.getHavingAST());
- resolveClause(cubeql, cubeql.getOrderByAST());
-
- AggregateResolver.updateAggregates(cubeql.getSelectAST(), cubeql);
- AggregateResolver.updateAggregates(cubeql.getHavingAST(), cubeql);
- }
+ static class ExpressionContext {
+ @Getter
+ private final ExprColumn exprCol;
+ @Getter
+ private final AbstractBaseTable srcTable;
+ @Getter
+ private final String srcAlias;
+ @Getter
+ private Set<ExprSpecContext> allExprs = new LinkedHashSet<ExprSpecContext>();
+ private Set<CandidateTable> directlyAvailableIn = new HashSet<CandidateTable>();
+ private Map<CandidateTable, Set<ExprSpecContext>> evaluableExpressions =
+ new HashMap<CandidateTable, Set<ExprSpecContext>>();
+ @Getter
+ private boolean hasMeasures = false;
- private void resolveClause(final CubeQueryContext cubeql, ASTNode clause) throws SemanticException {
- if (clause == null) {
- return;
+ ExpressionContext(CubeQueryContext cubeql, ExprColumn exprCol, AbstractBaseTable srcTable, String srcAlias)
+ throws SemanticException {
+ this.srcTable = srcTable;
+ this.exprCol = exprCol;
+ this.srcAlias = srcAlias;
+ for (ExprSpec es : exprCol.getExpressionSpecs()) {
+ allExprs.add(new ExprSpecContext(es, cubeql));
+ }
+ resolveColumnsAndAlias(cubeql);
+ }
+ private void resolveColumnsAndAlias(CubeQueryContext cubeql) throws SemanticException {
+ for (ExprSpecContext esc : allExprs) {
+ esc.resolveColumns(cubeql);
+ esc.replaceAliasInAST(cubeql, cubeql.getColToTableAlias());
+ }
+ for (ExprSpecContext esc : allExprs) {
+ for (String table : esc.getTblAliasToColumns().keySet()) {
+ try {
+ if (!CubeQueryContext.DEFAULT_TABLE.equalsIgnoreCase(table) && !srcAlias.equals(table)) {
+ cubeql.addOptionalDimTable(table, null,
+ false, esc.getTblAliasToColumns().get(table).toArray(new String[0]));
+ esc.exprDims.add((Dimension) cubeql.getCubeTableForAlias(table));
+ }
+ } catch (HiveException e) {
+ throw new SemanticException(e);
+ }
+ }
+ }
+ resolveColumnsAndReplaceAlias(cubeql, allExprs, cubeql.getColToTableAlias());
}
- // Traverse the tree and resolve expression columns
- HQLParser.bft(clause, new ASTNodeVisitor() {
- @Override
- public void visit(TreeNode visited) throws SemanticException {
- ASTNode node = visited.getNode();
- int childcount = node.getChildCount();
- for (int i = 0; i < childcount; i++) {
- ASTNode current = (ASTNode) node.getChild(i);
- if (current.getToken().getType() == TOK_TABLE_OR_COL && (node != null && node.getToken().getType() != DOT)) {
- // Take child ident.totext
- ASTNode ident = (ASTNode) current.getChild(0);
- String column = ident.getText().toLowerCase();
- ASTNode childExpr = getExprAST(cubeql, column);
- if (childExpr != null) {
- node.setChild(i, replaceAlias(childExpr, cubeql));
+ private void resolveColumnsAndReplaceAlias(CubeQueryContext cubeql, Set<ExprSpecContext> exprs,
+ Map<String, String> colToTableAlias) throws SemanticException {
+ Set<ExprSpecContext> nestedExpressions = new LinkedHashSet<ExprSpecContext>();
+ for (ExprSpecContext esc : exprs) {
+ for (Map.Entry<String, Set<String>> entry : esc.tblAliasToColumns.entrySet()) {
+ if (entry.getKey().equals(CubeQueryContext.DEFAULT_TABLE)) {
+ continue;
+ }
+ AbstractBaseTable baseTable = (AbstractBaseTable)cubeql.getCubeTableForAlias(entry.getKey());
+ // if (baseTable == null) {
+ // continue;
+ // }
+ Set<String> exprCols = new HashSet<String>();
+ for (String col : entry.getValue()) {
+ // col is an expression
+ if (baseTable.getExpressionNames().contains(col)) {
+ exprCols.add(col);
}
- } else if (current.getToken().getType() == DOT) {
- // This is for the case where column name is prefixed by table name
- // or table alias
- // For example 'select fact.id, dim2.id ...'
- // Right child is the column name, left child.ident is table name
- ASTNode tabident = HQLParser.findNodeByPath(current, TOK_TABLE_OR_COL, Identifier);
- ASTNode colIdent = (ASTNode) current.getChild(1);
+ }
+ // get all combinations of expression replaced with inner exprs AST.
+ addAllNestedExpressions(cubeql, esc, baseTable, nestedExpressions, exprCols);
+ }
+ }
+ for (ExprSpecContext esc : nestedExpressions) {
+ esc.resolveColumns(cubeql);
+ esc.replaceAliasInAST(cubeql, colToTableAlias);
+ for (String table : esc.getTblAliasToColumns().keySet()) {
+ try {
+ if (!CubeQueryContext.DEFAULT_TABLE.equalsIgnoreCase(table) && !srcAlias.equals(table)) {
+ cubeql.addOptionalDimTable(table, null, true,
+ esc.getTblAliasToColumns().get(table).toArray(new String[0]));
+ esc.exprDims.add((Dimension) cubeql.getCubeTableForAlias(table));
+ }
+ } catch (HiveException e) {
+ throw new SemanticException(e);
+ }
+ }
+ }
+ exprs.addAll(nestedExpressions);
+ }
- String column = colIdent.getText().toLowerCase();
+ private void addAllNestedExpressions(CubeQueryContext cubeql, ExprSpecContext baseEsc, AbstractBaseTable baseTable,
+ Set<ExprSpecContext> nestedExpressions, Set<String> exprCols) throws SemanticException {
+ for (String col : exprCols) {
+ Set<ExprSpecContext> replacedExpressions = new LinkedHashSet<ExprSpecContext>();
+ for (ExprSpec es : baseTable.getExpressionByName(col).getExpressionSpecs()) {
+ ASTNode finalAST = HQLParser.copyAST(baseEsc.getFinalAST());
+ replaceColumnInAST(finalAST, col, es.getASTNode());
+ ExprSpecContext replacedESC = new ExprSpecContext(baseEsc, es, finalAST, cubeql);
+ nestedExpressions.add(replacedESC);
+ replacedExpressions.add(replacedESC);
+ }
+ Set<String> remaining = new LinkedHashSet<String>(exprCols);
+ remaining.remove(col);
+ for (ExprSpecContext replacedESC : replacedExpressions) {
+ addAllNestedExpressions(cubeql, replacedESC, baseTable, nestedExpressions, remaining);
+ }
+ }
+ }
- ASTNode childExpr = getExprAST(cubeql, tabident.getText().toLowerCase(), column);
- if (childExpr != null) {
- node.setChild(i, replaceAlias(childExpr, cubeql));
+ void addDirectlyAvailable(CandidateTable cTable) {
+ directlyAvailableIn.add(cTable);
+ }
+ void addEvaluable(CubeQueryContext cubeql, CandidateTable cTable, ExprSpecContext esc) throws SemanticException {
+ Set<ExprSpecContext> evalSet = evaluableExpressions.get(cTable);
+ if (evalSet == null) {
+ evalSet = new LinkedHashSet<ExprSpecContext>();
+ evaluableExpressions.put(cTable, evalSet);
+ // add optional dimensions involved in expressions
+ for (String table : esc.getTblAliasToColumns().keySet()) {
+ try {
+ if (!CubeQueryContext.DEFAULT_TABLE.equalsIgnoreCase(table) && !srcAlias.equals(table)) {
+ cubeql.addOptionalDimTable(table, cTable,
+ false, esc.getTblAliasToColumns().get(table).toArray(new String[0]));
+ esc.exprDims.add((Dimension) cubeql.getCubeTableForAlias(table));
}
+ } catch (HiveException e) {
+ throw new SemanticException(e);
}
}
}
-
- });
+ evalSet.add(esc);
+ }
+ Set<ASTNode> getAllASTNodes() {
+ Set<ASTNode> allAST = new HashSet<ASTNode>();
+ for (ExprSpecContext esc : allExprs) {
+ allAST.add(esc.finalAST);
+ }
+ return allAST;
+ }
}
- private ASTNode getExprAST(final CubeQueryContext cubeql, String table, String column) throws SemanticException {
- if (cubeql.getQueriedTable(table) == null) {
- if (!cubeql.addQueriedTable(table)) {
- throw new SemanticException(ErrorMsg.NEITHER_CUBE_NOR_DIMENSION);
+ static class ExprSpecContext implements TrackQueriedColumns {
+ @Getter
+ private Set<ExprSpec> exprSpecs = new LinkedHashSet<ExprSpec>();
+ @Getter
+ private ASTNode finalAST;
+ private Set<Dimension> exprDims = new HashSet<Dimension>();
+ // for each expression store alias to columns queried
+ @Getter
+ private Map<String, Set<String>> tblAliasToColumns = new HashMap<String, Set<String>>();
+
+ ExprSpecContext(ExprSpec exprSpec, CubeQueryContext cubeql) throws SemanticException {
+ // replaces table names in expression with aliases in the query
+ finalAST = replaceAlias(exprSpec.getASTNode(), cubeql);
+ exprSpecs.add(exprSpec);
+ }
+ public ExprSpecContext(ExprSpecContext nested, ExprSpec current, ASTNode node,
+ CubeQueryContext cubeql) throws SemanticException {
+ exprSpecs.addAll(nested.exprSpecs);
+ exprSpecs.add(current);
+ finalAST = replaceAlias(node, cubeql);
+ }
+ public void replaceAliasInAST(CubeQueryContext cubeql, Map<String, String> colToTableAlias)
+ throws SemanticException {
+ AliasReplacer.extractTabAliasForCol(colToTableAlias, cubeql, this);
+ AliasReplacer.replaceAliases(finalAST, 0, colToTableAlias);
+ }
+ public void addColumnsQueried(String alias, String column) {
+ Set<String> cols = tblAliasToColumns.get(alias.toLowerCase());
+ if (cols == null) {
+ cols = new HashSet<String>();
+ tblAliasToColumns.put(alias.toLowerCase(), cols);
}
+ cols.add(column);
}
- if (!(cubeql.getQueriedTable(table) instanceof AbstractBaseTable)) {
+
+ void resolveColumns(CubeQueryContext cubeql) throws SemanticException {
+ // finds all columns and table aliases in the expression
+ ColumnResolver.getColsForTree(cubeql, finalAST, this);
+ }
+
+ Date getStartTime() {
+ Set<Date> startTimes = new HashSet<Date>();
+ for (ExprSpec es : exprSpecs) {
+ if (es.getStartTime() != null) {
+ startTimes.add(es.getStartTime());
+ }
+ }
+ if (!startTimes.isEmpty()) {
+ return Collections.max(startTimes);
+ }
return null;
}
- if (((AbstractBaseTable) cubeql.getQueriedTable(table)).getExpressionByName(column) == null) {
+
+ Date getEndTime() {
+ Set<Date> endTimes = new HashSet<Date>();
+ for (ExprSpec es : exprSpecs) {
+ if (es.getEndTime() != null) {
+ endTimes.add(es.getEndTime());
+ }
+ }
+ if (!endTimes.isEmpty()) {
+ return Collections.min(endTimes);
+ }
return null;
}
- return ((AbstractBaseTable) cubeql.getQueriedTable(table)).getExpressionByName(column).getAst();
+
+ public boolean isValidInTimeRange(final TimeRange range) {
+ return isValidFrom(range.getFromDate()) && isValidTill(range.getToDate());
+ }
+
+ public boolean isValidFrom(@NonNull final Date date) {
+ return (getStartTime() == null) ? true : date.equals(getStartTime()) || date.after(getStartTime());
+ }
+
+ public boolean isValidTill(@NonNull final Date date) {
+ return (getEndTime() == null) ? true : date.equals(getEndTime()) || date.before(getEndTime());
+ }
+
+ public String toString() {
+ return HQLParser.getString(finalAST);
+ }
+ }
+
+ @AllArgsConstructor
+ @ToString
+ private static class PickedExpression {
+ private String srcAlias;
+ private ExprSpecContext pickedCtx;
}
- private ASTNode getExprAST(final CubeQueryContext cubeql, final String column) throws SemanticException {
- ExprColumn expr = null;
- AbstractBaseTable table = null;
- if (cubeql.getCube() != null && !(cubeql.getCube() instanceof DerivedCube)) {
- // no expression resolver for derived cubes
- if (cubeql.getCube().getExpressionNames().contains(column.toLowerCase())) {
- expr = cubeql.getCube().getExpressionByName(column);
- table = (AbstractBaseTable) cubeql.getCube();
+ static class ExpressionResolverContext {
+ @Getter
+ private Map<String, Set<ExpressionContext>> allExprsQueried = new HashMap<String, Set<ExpressionContext>>();
+ private Map<String, Set<PickedExpression>> pickedExpressions = new HashMap<String, Set<PickedExpression>>();
+ private final CubeQueryContext cubeql;
+
+ ExpressionResolverContext(CubeQueryContext cubeql) {
+ this.cubeql = cubeql;
+ }
+ void addExpressionQueried(ExpressionContext expr) {
+ String exprCol = expr.getExprCol().getName().toLowerCase();
+ Set<ExpressionContext> ecSet = allExprsQueried.get(exprCol);
+ if (ecSet == null) {
+ ecSet = new LinkedHashSet<ExpressionContext>();
+ allExprsQueried.put(exprCol, ecSet);
+ }
+ ecSet.add(expr);
+ }
+
+ boolean isQueriedExpression(String column) {
+ return allExprsQueried.containsKey(column);
+ }
+
+ boolean hasAggregates() {
+ for (Set<ExpressionContext> ecSet : allExprsQueried.values()) {
+ for (ExpressionContext ec : ecSet) {
+ for (ExprSpecContext esc : ec.allExprs) {
+ if (HQLParser.isAggregateAST(esc.finalAST)) {
+ return true;
+ }
+ }
+ }
+ }
+ return false;
+ }
+
+ ExpressionContext getExpressionContext(String expr, String alias) {
+ for (ExpressionContext ec : allExprsQueried.get(expr)) {
+ if (ec.getSrcAlias().equals(alias)) {
+ return ec;
+ }
+ }
+ throw new IllegalArgumentException("no expression available for " + expr + " alias:" + alias);
+ }
+
+ public boolean hasMeasures(String expr, CubeInterface cube) {
+ String alias = cubeql.getAliasForTableName(cube.getName());
+ ExpressionContext ec = getExpressionContext(expr, alias);
+ boolean hasMeasures = false;
+ for (ExprSpecContext esc : ec.allExprs) {
+ if (esc.getTblAliasToColumns().get(alias) != null) {
+ for (String cubeCol : esc.getTblAliasToColumns().get(alias)) {
+ if (cube.getMeasureByName(cubeCol) != null) {
+ hasMeasures = true;
+ break;
+ }
+ }
+ }
}
+ ec.hasMeasures = hasMeasures;
+ return hasMeasures;
}
- if (cubeql.getDimensions() != null) {
- for (Dimension dim : cubeql.getDimensions()) {
- if (dim.getExpressionNames().contains(column.toLowerCase())) {
- if (expr != null) {
- throw new SemanticException(ErrorMsg.AMBIGOUS_DIM_COLUMN, table.getName(), dim.getName());
+
+ //updates all expression specs which are evaluable
+ public void updateEvaluables(String expr, CandidateTable cTable)
+ throws SemanticException {
+ String alias = cubeql.getAliasForTableName(cTable.getBaseTable().getName());
+ ExpressionContext ec = getExpressionContext(expr, alias);
+ if (cTable.getColumns().contains(expr)) {
+ // expression is directly materialized in candidate table
+ ec.addDirectlyAvailable(cTable);
+ }
+ for (ExprSpecContext esc : ec.allExprs) {
+ if (esc.getTblAliasToColumns().get(alias) == null) {
+ ec.addEvaluable(cubeql, cTable, esc);
+ } else {
+ Set<String> columns = esc.getTblAliasToColumns().get(alias);
+ boolean isEvaluable = true;
+ for (String col : columns) {
+ if (!cTable.getColumns().contains(col.toLowerCase())) {
+ if (!cubeql.getDeNormCtx().addRefUsage(cTable, col, cTable.getBaseTable().getName())) {
+ // check if it is available as reference, if not expression is not evaluable
+ isEvaluable = false;
+ break;
+ }
+ }
+ }
+ if (isEvaluable) {
+ ec.addEvaluable(cubeql, cTable, esc);
}
- expr = dim.getExpressionByName(column);
- table = dim;
}
}
}
- if (expr == null) {
+
+ // checks if expr is evaluable
+ public boolean isEvaluable(String expr, CandidateTable cTable) {
+ ExpressionContext ec = getExpressionContext(expr, cubeql.getAliasForTableName(cTable.getBaseTable().getName()));
+ if (ec.directlyAvailableIn.contains(cTable)) {
+ return true;
+ }
+ if (ec.evaluableExpressions.get(cTable) == null) {
+ return false;
+ }
+ return !ec.evaluableExpressions.get(cTable).isEmpty();
+ }
+
+ /**
+ *
+ * @param exprs
+ * @return
+ */
+ public boolean allNotEvaluable(Set<String> exprs, CandidateTable cTable) {
+ for (String expr : exprs) {
+ if (!isEvaluable(expr, cTable)) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ public Collection<String> coveringExpressions(Set<String> exprs, CandidateTable cTable) {
+ Set<String> coveringSet = new HashSet<String>();
+ for (String expr : exprs) {
+ if (isEvaluable(expr, cTable)) {
+ coveringSet.add(expr);
+ }
+ }
+ return coveringSet;
+ }
+
+ /**
+ * Returns true if all passed expressions are evaluable
+ *
+ * @param cTable
+ * @param exprs
+ * @return
+ */
+ public boolean allEvaluable(CandidateTable cTable, Set<String> exprs) {
+ for (String expr : exprs) {
+ if (!isEvaluable(expr, cTable)) {
+ return false;
+ }
+ }
+ return true;
+ }
+
+ public Set<Dimension> rewriteExprCtx(CandidateFact cfact, Map<Dimension, CandidateDim> dimsToQuery,
+ boolean replaceFact) throws SemanticException {
+ Set<Dimension> exprDims = new HashSet<Dimension>();
+ if (!allExprsQueried.isEmpty()) {
+ // pick expressions for fact
+ if (cfact != null) {
+ pickExpressionsForTable(cfact);
+ }
+ // pick expressions for dimensions
+ if (dimsToQuery != null && !dimsToQuery.isEmpty()) {
+ for (CandidateDim cdim : dimsToQuery.values()) {
+ pickExpressionsForTable(cdim);
+ }
+ }
+ // Replace picked expressions in all the base trees
+ replacePickedExpressions(cfact, replaceFact);
+ for (Set<PickedExpression> peSet : pickedExpressions.values()) {
+ for (PickedExpression pe : peSet) {
+ exprDims.addAll(pe.pickedCtx.exprDims);
+ }
+ }
+ }
+ pickedExpressions.clear();
+ return exprDims;
+ }
+
+ private void replacePickedExpressions(CandidateFact cfact, boolean replaceFact)
+ throws SemanticException {
+ if (replaceFact) {
+ replaceAST(cubeql, cfact.getSelectAST());
+ replaceAST(cubeql, cfact.getWhereAST());
+ replaceAST(cubeql, cfact.getJoinTree());
+ replaceAST(cubeql, cfact.getGroupByAST());
+ replaceAST(cubeql, cfact.getHavingAST());
+ } else {
+ replaceAST(cubeql, cubeql.getSelectAST());
+ replaceAST(cubeql, cubeql.getWhereAST());
+ replaceAST(cubeql, cubeql.getJoinTree());
+ replaceAST(cubeql, cubeql.getGroupByAST());
+ replaceAST(cubeql, cubeql.getHavingAST());
+ }
+ replaceAST(cubeql, cubeql.getOrderByAST());
+ }
+
+ private void replaceAST(final CubeQueryContext cubeql, ASTNode node) throws SemanticException {
+ if (node == null) {
+ return;
+ }
+ // Traverse the tree and resolve expression columns
+ HQLParser.bft(node, new ASTNodeVisitor() {
+ @Override
+ public void visit(TreeNode visited) throws SemanticException {
+ ASTNode node = visited.getNode();
+ int childcount = node.getChildCount();
+ for (int i = 0; i < childcount; i++) {
+ ASTNode current = (ASTNode) node.getChild(i);
+ if (current.getToken().getType() == DOT) {
+ // This is for the case where column name is prefixed by table name
+ // or table alias
+ // For example 'select fact.id, dim2.id ...'
+ // Right child is the column name, left child.ident is table name
+ ASTNode tabident = HQLParser.findNodeByPath(current, TOK_TABLE_OR_COL, Identifier);
+ ASTNode colIdent = (ASTNode) current.getChild(1);
+ String column = colIdent.getText().toLowerCase();
+
+ if (pickedExpressions.containsKey(column)) {
+ PickedExpression expr = getPickedExpression(column, tabident.getText().toLowerCase());
+ if (expr != null) {
+ node.setChild(i, replaceAlias(expr.pickedCtx.finalAST, cubeql));
+ }
+ }
+ }
+ }
+ }
+ });
+ }
+
+ private PickedExpression getPickedExpression(String column, String alias) {
+ Set<PickedExpression> peSet = pickedExpressions.get(column);
+ if (peSet != null && !peSet.isEmpty()) {
+ for (PickedExpression picked : peSet) {
+ if (picked.srcAlias.equals(alias)) {
+ return picked;
+ }
+ }
+ }
return null;
}
- return expr.getAst();
+
+ private void pickExpressionsForTable(CandidateTable cTable) {
+ for (Map.Entry<String, Set<ExpressionContext>> ecEntry : allExprsQueried.entrySet()) {
+ Set<ExpressionContext> ecSet = ecEntry.getValue();
+ for (ExpressionContext ec : ecSet) {
+ if (ec.getSrcTable().getName().equals(cTable.getBaseTable().getName())) {
+ if (!ec.directlyAvailableIn.contains(cTable)) {
+ if (ec.evaluableExpressions.get(cTable) != null && !ec.evaluableExpressions.get(cTable).isEmpty()) {
+ // pick first evaluable expression
+ Set<PickedExpression> peSet = pickedExpressions.get(ecEntry.getKey());
+ if (peSet == null) {
+ peSet = new HashSet<PickedExpression>();
+ pickedExpressions.put(ecEntry.getKey(), peSet);
+ }
+ peSet.add(new PickedExpression(ec.srcAlias, ec.evaluableExpressions.get(cTable).iterator().next()));
+ }
+ }
+ }
+ }
+ }
+ }
+
+ void pruneExpressions() {
+ for (Set<ExpressionContext> ecSet : allExprsQueried.values()) {
+ for (ExpressionContext ec : ecSet) {
+ Set<ExprSpecContext> removedEsc = new HashSet<ExprSpecContext>();
+ for(Iterator<ExprSpecContext> iterator = ec.getAllExprs().iterator(); iterator.hasNext();) {
+ ExprSpecContext esc = iterator.next();
+ boolean removed = false;
+ // Go over expression dims and remove expression involving dimensions for which candidate tables are
+ // not there
+ for (Dimension exprDim : esc.exprDims) {
+ if (cubeql.getCandidateDims().get(exprDim) == null || cubeql.getCandidateDims().get(exprDim).isEmpty()) {
+ log.info("Removing expression {} as {} it does not have any candidate tables", esc, exprDim);
+ iterator.remove();
+ removedEsc.add(esc);
+ removed = true;
+ break;
+ }
+ }
+ if (removed) {
+ continue;
+ }
+ //remove expressions which are not valid in the timerange queried
+ // If an expression is defined as
+ // ex = a + b // from t1 to t2;
+ // ex = c + d // from t2 to t3
+ // With range queried, invalid expressions will be removed
+ // If range is including more than one expression, queries can be unioned as an improvement at later time.
+ // But for now, they are not eligible expressions
+ for (TimeRange range : cubeql.getTimeRanges()) {
+ if (!esc.isValidInTimeRange(range)) {
+ log.info("Removing expression " + esc + " as it is not valid in timerange queried");
+ iterator.remove();
+ removedEsc.add(esc);
+ removed = true;
+ break;
+ }
+ }
+ if (removed) {
+ continue;
+ }
+ // Go over expressions and remove expression containing unavailable columns in timerange
+ // In the example above,
+ // if ex = a +b ; and a is not available in timerange queried, it will be removed.
+ for (TimeRange range : cubeql.getTimeRanges()) {
+ boolean toRemove = false;
+ for (Map.Entry<String, Set<String>> entry : esc.getTblAliasToColumns().entrySet()) {
+ if (CubeQueryContext.DEFAULT_TABLE.equalsIgnoreCase(entry.getKey())) {
+ continue;
+ }
+ AbstractBaseTable baseTable = (AbstractBaseTable) cubeql.getCubeTableForAlias(entry.getKey());
+ for (String col : entry.getValue()) {
+ if (!baseTable.getColumnByName(col).isColumnAvailableInTimeRange(range)) {
+ toRemove = true;
+ break;
+ }
+ }
+ if (toRemove) {
+ break;
+ }
+ }
+ if (toRemove) {
+ log.info("Removing expression " + esc + " as its columns are unavailable in timerange queried");
+ iterator.remove();
+ removedEsc.add(esc);
+ removed = true;
+ break;
+ }
+ }
+ }
+ for (Set<ExprSpecContext> evalSet : ec.evaluableExpressions.values()) {
+ evalSet.removeAll(removedEsc);
+ }
+ }
+ }
+ }
+ }
+
+ @Override
+ public void rewriteContext(CubeQueryContext cubeql) throws SemanticException {
+ ExpressionResolverContext exprCtx = cubeql.getExprCtx();
+ if (exprCtx == null) {
+ exprCtx = new ExpressionResolverContext(cubeql);
+ cubeql.setExprCtx(exprCtx);
+ for (Map.Entry<String, Set<String>> entry : cubeql.getTblAliasToColumns().entrySet()) {
+ String alias = entry.getKey();
+ // skip default alias
+ if (alias == CubeQueryContext.DEFAULT_TABLE) {
+ continue;
+ }
+ AbstractCubeTable tbl = cubeql.getCubeTableForAlias(alias);
+ Set<String> columns = entry.getValue();
+ for (String column : columns) {
+ CubeColumn col;
+ if (tbl instanceof CubeInterface) {
+ col = ((CubeInterface) tbl).getColumnByName(column);
+ } else {
+ col = ((Dimension) tbl).getColumnByName(column);
+ }
+ if (col instanceof ExprColumn) {
+ exprCtx.addExpressionQueried(new ExpressionContext(cubeql, (ExprColumn)col, (AbstractBaseTable)tbl, alias));
+ }
+ }
+ }
+ Set<String> exprsWithMeasures = new HashSet<String>();
+ for (String expr : cubeql.getQueriedExprs()) {
+ if (cubeql.getExprCtx().hasMeasures(expr, cubeql.getCube())) {
+ // expression has measures
+ exprsWithMeasures.add(expr);
+ }
+ }
+ cubeql.addQueriedExprsWithMeasures(exprsWithMeasures);
+
+ } else {
+ // prune invalid expressions
+ cubeql.getExprCtx().pruneExpressions();
+ // prune candidate facts without any valid expressions
+ if (cubeql.getCube() != null && !cubeql.getCandidateFacts().isEmpty()) {
+ for (Iterator<CandidateFact> i = cubeql.getCandidateFacts().iterator(); i.hasNext();) {
+ CandidateFact cfact = i.next();
+ for (Map.Entry<String, Set<ExpressionContext>> ecEntry : exprCtx.allExprsQueried.entrySet()) {
+ Set<ExpressionContext> ecSet = ecEntry.getValue();
+ for (ExpressionContext ec : ecSet) {
+ if (ec.getSrcTable().getName().equals(cfact.getBaseTable().getName())) {
+ if (!ec.directlyAvailableIn.contains(cfact)
+ && (ec.evaluableExpressions.get(cfact) == null
+ || ec.evaluableExpressions.get(cfact).isEmpty())) {
+ log.info("Not considering fact table:{} as {} is not evaluable", cfact, ec.exprCol.getName());
+ cubeql.addFactPruningMsgs(cfact.fact,
+ CandidateTablePruneCause.expressionNotEvaluable(ec.exprCol.getName()));
+ i.remove();
+ }
+ }
+ }
+ }
+ }
+ }
+ // prune candidate dims without any valid expressions
+ if (cubeql.getDimensions() != null && !cubeql.getDimensions().isEmpty()) {
+ for (Dimension dim : cubeql.getDimensions()) {
+ for (Iterator<CandidateDim> i = cubeql.getCandidateDimTables().get(dim).iterator(); i.hasNext();) {
+ CandidateDim cdim = i.next();
+ for (Map.Entry<String, Set<ExpressionContext>> ecEntry : exprCtx.allExprsQueried.entrySet()) {
+ Set<ExpressionContext> ecSet = ecEntry.getValue();
+ for (ExpressionContext ec : ecSet) {
+ if (ec.getSrcTable().getName().equals(cdim.getBaseTable().getName())) {
+ if (!ec.directlyAvailableIn.contains(cdim)
+ && (ec.evaluableExpressions.get(cdim) == null
+ || ec.evaluableExpressions.get(cdim).isEmpty())) {
+ log.info("Not considering dim table:{} as {} is not evaluable", cdim, ec.exprCol.getName());
+ cubeql.addDimPruningMsgs(dim, cdim.dimtable,
+ CandidateTablePruneCause.expressionNotEvaluable(ec.exprCol.getName()));
+ i.remove();
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+ }
}
- private ASTNode replaceAlias(final ASTNode expr, final CubeQueryContext cubeql) throws SemanticException {
+ private static ASTNode replaceAlias(final ASTNode expr, final CubeQueryContext cubeql) throws SemanticException {
ASTNode finalAST = HQLParser.copyAST(expr);
HQLParser.bft(finalAST, new ASTNodeVisitor() {
@Override
@@ -166,4 +729,43 @@ class ExpressionResolver implements ContextRewriter {
});
return finalAST;
}
+
+ private static void replaceColumnInAST(ASTNode expr, final String toReplace, final ASTNode columnAST)
+ throws SemanticException {
+ if (expr == null) {
+ return;
+ }
+ // Traverse the tree and resolve expression columns
+ HQLParser.bft(expr, new ASTNodeVisitor() {
+ @Override
+ public void visit(TreeNode visited) throws SemanticException {
+ ASTNode node = visited.getNode();
+ int childcount = node.getChildCount();
+ for (int i = 0; i < childcount; i++) {
+ ASTNode current = (ASTNode) node.getChild(i);
+ if (current.getToken().getType() == TOK_TABLE_OR_COL && (node != null && node.getToken().getType() != DOT)) {
+ // Take child ident.totext
+ ASTNode ident = (ASTNode) current.getChild(0);
+ String column = ident.getText().toLowerCase();
+ if (toReplace.equals(column)) {
+ node.setChild(i, HQLParser.copyAST(columnAST));
+ }
+ } else if (current.getToken().getType() == DOT) {
+ // This is for the case where column name is prefixed by table name
+ // or table alias
+ // For example 'select fact.id, dim2.id ...'
+ // Right child is the column name, left child.ident is table name
+ ASTNode tabident = HQLParser.findNodeByPath(current, TOK_TABLE_OR_COL, Identifier);
+ ASTNode colIdent = (ASTNode) current.getChild(1);
+
+ String column = colIdent.getText().toLowerCase();
+
+ if (toReplace.equals(column)) {
+ node.setChild(i, HQLParser.copyAST(columnAST));
+ }
+ }
+ }
+ }
+ });
+ }
}