You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@accumulo.apache.org by ec...@apache.org on 2013/11/26 16:47:10 UTC
[06/38] ACCUMULO-600 removed wikisearch from trunk
http://git-wip-us.apache.org/repos/asf/accumulo/blob/8db62992/src/examples/wikisearch/query/src/main/java/org/apache/accumulo/examples/wikisearch/parser/QueryParser.java
----------------------------------------------------------------------
diff --git a/src/examples/wikisearch/query/src/main/java/org/apache/accumulo/examples/wikisearch/parser/QueryParser.java b/src/examples/wikisearch/query/src/main/java/org/apache/accumulo/examples/wikisearch/parser/QueryParser.java
deleted file mode 100644
index 73fa2cf..0000000
--- a/src/examples/wikisearch/query/src/main/java/org/apache/accumulo/examples/wikisearch/parser/QueryParser.java
+++ /dev/null
@@ -1,845 +0,0 @@
-/*
- * 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.accumulo.examples.wikisearch.parser;
-
-import java.io.StringReader;
-import java.util.ArrayList;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Set;
-
-import org.apache.commons.collections.map.LRUMap;
-import org.apache.commons.jexl2.parser.ASTAdditiveNode;
-import org.apache.commons.jexl2.parser.ASTAdditiveOperator;
-import org.apache.commons.jexl2.parser.ASTAmbiguous;
-import org.apache.commons.jexl2.parser.ASTAndNode;
-import org.apache.commons.jexl2.parser.ASTArrayAccess;
-import org.apache.commons.jexl2.parser.ASTArrayLiteral;
-import org.apache.commons.jexl2.parser.ASTAssignment;
-import org.apache.commons.jexl2.parser.ASTBitwiseAndNode;
-import org.apache.commons.jexl2.parser.ASTBitwiseComplNode;
-import org.apache.commons.jexl2.parser.ASTBitwiseOrNode;
-import org.apache.commons.jexl2.parser.ASTBitwiseXorNode;
-import org.apache.commons.jexl2.parser.ASTBlock;
-import org.apache.commons.jexl2.parser.ASTConstructorNode;
-import org.apache.commons.jexl2.parser.ASTDivNode;
-import org.apache.commons.jexl2.parser.ASTEQNode;
-import org.apache.commons.jexl2.parser.ASTERNode;
-import org.apache.commons.jexl2.parser.ASTEmptyFunction;
-import org.apache.commons.jexl2.parser.ASTFalseNode;
-import org.apache.commons.jexl2.parser.ASTFloatLiteral;
-import org.apache.commons.jexl2.parser.ASTForeachStatement;
-import org.apache.commons.jexl2.parser.ASTFunctionNode;
-import org.apache.commons.jexl2.parser.ASTGENode;
-import org.apache.commons.jexl2.parser.ASTGTNode;
-import org.apache.commons.jexl2.parser.ASTIdentifier;
-import org.apache.commons.jexl2.parser.ASTIfStatement;
-import org.apache.commons.jexl2.parser.ASTIntegerLiteral;
-import org.apache.commons.jexl2.parser.ASTJexlScript;
-import org.apache.commons.jexl2.parser.ASTLENode;
-import org.apache.commons.jexl2.parser.ASTLTNode;
-import org.apache.commons.jexl2.parser.ASTMapEntry;
-import org.apache.commons.jexl2.parser.ASTMapLiteral;
-import org.apache.commons.jexl2.parser.ASTMethodNode;
-import org.apache.commons.jexl2.parser.ASTModNode;
-import org.apache.commons.jexl2.parser.ASTMulNode;
-import org.apache.commons.jexl2.parser.ASTNENode;
-import org.apache.commons.jexl2.parser.ASTNRNode;
-import org.apache.commons.jexl2.parser.ASTNotNode;
-import org.apache.commons.jexl2.parser.ASTNullLiteral;
-import org.apache.commons.jexl2.parser.ASTOrNode;
-import org.apache.commons.jexl2.parser.ASTReference;
-import org.apache.commons.jexl2.parser.ASTSizeFunction;
-import org.apache.commons.jexl2.parser.ASTSizeMethod;
-import org.apache.commons.jexl2.parser.ASTStringLiteral;
-import org.apache.commons.jexl2.parser.ASTTernaryNode;
-import org.apache.commons.jexl2.parser.ASTTrueNode;
-import org.apache.commons.jexl2.parser.ASTUnaryMinusNode;
-import org.apache.commons.jexl2.parser.ASTWhileStatement;
-import org.apache.commons.jexl2.parser.ParseException;
-import org.apache.commons.jexl2.parser.Parser;
-import org.apache.commons.jexl2.parser.ParserVisitor;
-import org.apache.commons.jexl2.parser.SimpleNode;
-import org.apache.hadoop.util.hash.Hash;
-import org.apache.hadoop.util.hash.MurmurHash;
-
-import com.google.common.collect.HashMultimap;
-import com.google.common.collect.Multimap;
-
-/**
- * Parses the query for the purposes of extracting terms, operators, and literals for query optimization. This class does not necessarily understand how to
- * parse all of the possible combinations of the JEXL syntax, but that does not mean that the query will not evaluate against the event objects. It means that
- * the unsupported operators will not be parsed and included in the optimization step.
- *
- */
-public class QueryParser implements ParserVisitor {
-
- public static class QueryTerm {
- private boolean negated = false;
- private String operator = null;
- private Object value = null;
-
- public QueryTerm(boolean negated, String operator, Object value) {
- super();
- this.negated = negated;
- this.operator = operator;
- this.value = value;
- }
-
- public boolean isNegated() {
- return negated;
- }
-
- public String getOperator() {
- return operator;
- }
-
- public Object getValue() {
- return value;
- }
-
- public void setNegated(boolean negated) {
- this.negated = negated;
- }
-
- public void setOperator(String operator) {
- this.operator = operator;
- }
-
- public void setValue(Object value) {
- this.value = value;
- }
-
- public String toString() {
- StringBuilder buf = new StringBuilder();
- buf.append("negated: ").append(negated).append(", operator: ").append(operator).append(", value: ").append(value);
- return buf.toString();
- }
- }
-
- /**
- * Holder object
- */
- static class ObjectHolder {
- Object object;
-
- public Object getObject() {
- return object;
- }
-
- public void setObject(Object object) {
- this.object = object;
- }
- }
-
- static class FunctionResult {
- private List<TermResult> terms = new ArrayList<TermResult>();
-
- public List<TermResult> getTerms() {
- return terms;
- }
- }
-
- /**
- * Holder object for a term (i.e. field name)
- */
- static class TermResult {
- Object value;
-
- public TermResult(Object value) {
- this.value = value;
- }
- }
-
- /**
- * Holder object for a literal (integer, float, string, or null literal) value
- */
- static class LiteralResult {
- Object value;
-
- public LiteralResult(Object value) {
- this.value = value;
- }
- }
-
- /**
- * Object used to store context information as the AST is being iterated over.
- */
- static class EvaluationContext {
- boolean inOrContext = false;
- boolean inNotContext = false;
- boolean inAndContext = false;
- }
-
- /**
- * Object to store information from previously parsed queries.
- */
- private static class CacheEntry {
- private Set<String> negatedTerms = null;
- private Set<String> andTerms = null;
- private Set<String> orTerms = null;
- private Set<Object> literals = null;
- private Multimap<String,QueryTerm> terms = null;
- private ASTJexlScript rootNode = null;
- private TreeNode tree = null;
-
- public CacheEntry(Set<String> negatedTerms, Set<String> andTerms, Set<String> orTerms, Set<Object> literals, Multimap<String,QueryTerm> terms,
- ASTJexlScript rootNode, TreeNode tree) {
- super();
- this.negatedTerms = negatedTerms;
- this.andTerms = andTerms;
- this.orTerms = orTerms;
- this.literals = literals;
- this.terms = terms;
- this.rootNode = rootNode;
- this.tree = tree;
- }
-
- public Set<String> getNegatedTerms() {
- return negatedTerms;
- }
-
- public Set<String> getAndTerms() {
- return andTerms;
- }
-
- public Set<String> getOrTerms() {
- return orTerms;
- }
-
- public Set<Object> getLiterals() {
- return literals;
- }
-
- public Multimap<String,QueryTerm> getTerms() {
- return terms;
- }
-
- public ASTJexlScript getRootNode() {
- return rootNode;
- }
-
- public TreeNode getTree() {
- return tree;
- }
- }
-
- private static final int SEED = 650567;
-
- private static LRUMap cache = new LRUMap();
-
- protected Set<String> negatedTerms = new HashSet<String>();
-
- private Set<String> andTerms = new HashSet<String>();
-
- private Set<String> orTerms = new HashSet<String>();
-
- /**
- * List of String, Integer, Float, etc literals that were passed in the query
- */
- private Set<Object> literals = new HashSet<Object>();
-
- /**
- * Map of terms (field names) to QueryTerm objects.
- */
- private Multimap<String,QueryTerm> terms = HashMultimap.create();
-
- private ASTJexlScript rootNode = null;
-
- private TreeNode tree = null;
-
- private int hashVal = 0;
-
- public QueryParser() {}
-
- private void reset() {
- this.negatedTerms.clear();
- this.andTerms.clear();
- this.orTerms.clear();
- this.literals.clear();
- this.terms = HashMultimap.create();
- }
-
- public void execute(String query) throws ParseException {
- reset();
- query = query.replaceAll("\\s+AND\\s+", " and ");
- query = query.replaceAll("\\s+OR\\s+", " or ");
- query = query.replaceAll("\\s+NOT\\s+", " not ");
-
- // Check to see if its in the cache
- Hash hash = MurmurHash.getInstance();
- this.hashVal = hash.hash(query.getBytes(), SEED);
- CacheEntry entry = null;
- synchronized (cache) {
- entry = (CacheEntry) cache.get(hashVal);
- }
- if (entry != null) {
- this.negatedTerms = entry.getNegatedTerms();
- this.andTerms = entry.getAndTerms();
- this.orTerms = entry.getOrTerms();
- this.literals = entry.getLiterals();
- this.terms = entry.getTerms();
- this.rootNode = entry.getRootNode();
- this.tree = entry.getTree();
- } else {
- Parser p = new Parser(new StringReader(";"));
- rootNode = p.parse(new StringReader(query), null);
- rootNode.childrenAccept(this, null);
- TreeBuilder builder = new TreeBuilder(rootNode);
- tree = builder.getRootNode();
- entry = new CacheEntry(this.negatedTerms, this.andTerms, this.orTerms, this.literals, this.terms, rootNode, tree);
- synchronized (cache) {
- cache.put(hashVal, entry);
- }
- }
-
- }
-
- /**
- *
- * @return this queries hash value
- */
- public int getHashValue() {
- return this.hashVal;
- }
-
- public TreeNode getIteratorTree() {
- return this.tree;
- }
-
- /**
- *
- * @return JEXL abstract syntax tree
- */
- public ASTJexlScript getAST() {
- return this.rootNode;
- }
-
- /**
- *
- * @return Set of field names to use in the optimizer for nots. As a general rule none of these terms should be used to find an event and should they should
- * be evaluated on each event after being found.
- */
- public Set<String> getNegatedTermsForOptimizer() {
- return negatedTerms;
- }
-
- /**
- *
- * @return Set of field names to use in the optimizer for ands. As a general rule any one term of an and clause can be used to find associated events.
- */
- public Set<String> getAndTermsForOptimizer() {
- return andTerms;
- }
-
- /**
- *
- * @return Set of field names to use in the optimizer for ors. As a general rule any terms that are part of an or clause need to be searched to find the
- * associated events.
- */
- public Set<String> getOrTermsForOptimizer() {
- return orTerms;
- }
-
- /**
- *
- * @return String, Integer, and Float literals used in the query.
- */
- public Set<Object> getQueryLiterals() {
- return literals;
- }
-
- /**
- *
- * @return Set of all identifiers (field names) in the query.
- */
- public Set<String> getQueryIdentifiers() {
- return terms.keySet();
- }
-
- /**
- *
- * @return map of term (field name) to QueryTerm object
- */
- public Multimap<String,QueryTerm> getQueryTerms() {
- return terms;
- }
-
- public Object visit(SimpleNode node, Object data) {
- return null;
- }
-
- public Object visit(ASTJexlScript node, Object data) {
- return null;
- }
-
- public Object visit(ASTBlock node, Object data) {
- return null;
- }
-
- public Object visit(ASTAmbiguous node, Object data) {
- return null;
- }
-
- public Object visit(ASTIfStatement node, Object data) {
- return null;
- }
-
- public Object visit(ASTWhileStatement node, Object data) {
- return null;
- }
-
- public Object visit(ASTForeachStatement node, Object data) {
- return null;
- }
-
- public Object visit(ASTAssignment node, Object data) {
- return null;
- }
-
- public Object visit(ASTTernaryNode node, Object data) {
- return null;
- }
-
- public Object visit(ASTOrNode node, Object data) {
- boolean previouslyInOrContext = false;
- EvaluationContext ctx = null;
- if (null != data && data instanceof EvaluationContext) {
- ctx = (EvaluationContext) data;
- previouslyInOrContext = ctx.inOrContext;
- } else {
- ctx = new EvaluationContext();
- }
- ctx.inOrContext = true;
- // Process both sides of this node.
- node.jjtGetChild(0).jjtAccept(this, ctx);
- node.jjtGetChild(1).jjtAccept(this, ctx);
- // reset the state
- if (null != data && !previouslyInOrContext)
- ctx.inOrContext = false;
- return null;
- }
-
- public Object visit(ASTAndNode node, Object data) {
- boolean previouslyInAndContext = false;
- EvaluationContext ctx = null;
- if (null != data && data instanceof EvaluationContext) {
- ctx = (EvaluationContext) data;
- previouslyInAndContext = ctx.inAndContext;
- } else {
- ctx = new EvaluationContext();
- }
- ctx.inAndContext = true;
- // Process both sides of this node.
- node.jjtGetChild(0).jjtAccept(this, ctx);
- node.jjtGetChild(1).jjtAccept(this, ctx);
- // reset the state
- if (null != data && !previouslyInAndContext)
- ctx.inAndContext = false;
- return null;
- }
-
- public Object visit(ASTBitwiseOrNode node, Object data) {
- return null;
- }
-
- public Object visit(ASTBitwiseXorNode node, Object data) {
- return null;
- }
-
- public Object visit(ASTBitwiseAndNode node, Object data) {
- return null;
- }
-
- public Object visit(ASTEQNode node, Object data) {
- StringBuilder fieldName = new StringBuilder();
- ObjectHolder value = new ObjectHolder();
- // Process both sides of this node.
- Object left = node.jjtGetChild(0).jjtAccept(this, data);
- Object right = node.jjtGetChild(1).jjtAccept(this, data);
- // Ignore functions in the query
- if (left instanceof FunctionResult || right instanceof FunctionResult)
- return null;
- decodeResults(left, right, fieldName, value);
- // We need to check to see if we are in a NOT context. If so,
- // then we need to reverse the negation.
- boolean negated = false;
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- if (ctx.inNotContext)
- negated = !negated;
- }
- QueryTerm term = new QueryTerm(negated, JexlOperatorConstants.getOperator(node.getClass()), value.getObject());
- terms.put(fieldName.toString(), term);
- return null;
- }
-
- public Object visit(ASTNENode node, Object data) {
- StringBuilder fieldName = new StringBuilder();
- ObjectHolder value = new ObjectHolder();
- // Process both sides of this node.
- Object left = node.jjtGetChild(0).jjtAccept(this, data);
- Object right = node.jjtGetChild(1).jjtAccept(this, data);
- // Ignore functions in the query
- if (left instanceof FunctionResult || right instanceof FunctionResult)
- return null;
- decodeResults(left, right, fieldName, value);
- // We need to check to see if we are in a NOT context. If so,
- // then we need to reverse the negation.
- boolean negated = true;
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- if (ctx.inNotContext)
- negated = !negated;
- }
- if (negated)
- negatedTerms.add(fieldName.toString());
- QueryTerm term = new QueryTerm(negated, JexlOperatorConstants.getOperator(node.getClass()), value.getObject());
- terms.put(fieldName.toString(), term);
- return null;
- }
-
- public Object visit(ASTLTNode node, Object data) {
- StringBuilder fieldName = new StringBuilder();
- ObjectHolder value = new ObjectHolder();
- // Process both sides of this node.
- Object left = node.jjtGetChild(0).jjtAccept(this, data);
- Object right = node.jjtGetChild(1).jjtAccept(this, data);
- // Ignore functions in the query
- if (left instanceof FunctionResult || right instanceof FunctionResult)
- return null;
- decodeResults(left, right, fieldName, value);
- // We need to check to see if we are in a NOT context. If so,
- // then we need to reverse the negation.
- boolean negated = false;
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- if (ctx.inNotContext)
- negated = !negated;
- }
- QueryTerm term = new QueryTerm(negated, JexlOperatorConstants.getOperator(node.getClass()), value.getObject());
- terms.put(fieldName.toString(), term);
- return null;
- }
-
- public Object visit(ASTGTNode node, Object data) {
- StringBuilder fieldName = new StringBuilder();
- ObjectHolder value = new ObjectHolder();
- // Process both sides of this node.
- Object left = node.jjtGetChild(0).jjtAccept(this, data);
- Object right = node.jjtGetChild(1).jjtAccept(this, data);
- // Ignore functions in the query
- if (left instanceof FunctionResult || right instanceof FunctionResult)
- return null;
- decodeResults(left, right, fieldName, value);
- // We need to check to see if we are in a NOT context. If so,
- // then we need to reverse the negation.
- boolean negated = false;
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- if (ctx.inNotContext)
- negated = !negated;
- }
- QueryTerm term = new QueryTerm(negated, JexlOperatorConstants.getOperator(node.getClass()), value.getObject());
- terms.put(fieldName.toString(), term);
- return null;
- }
-
- public Object visit(ASTLENode node, Object data) {
- StringBuilder fieldName = new StringBuilder();
- ObjectHolder value = new ObjectHolder();
- // Process both sides of this node.
- Object left = node.jjtGetChild(0).jjtAccept(this, data);
- Object right = node.jjtGetChild(1).jjtAccept(this, data);
- // Ignore functions in the query
- if (left instanceof FunctionResult || right instanceof FunctionResult)
- return null;
- decodeResults(left, right, fieldName, value);
- // We need to check to see if we are in a NOT context. If so,
- // then we need to reverse the negation.
- boolean negated = false;
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- if (ctx.inNotContext)
- negated = !negated;
- }
- QueryTerm term = new QueryTerm(negated, JexlOperatorConstants.getOperator(node.getClass()), value.getObject());
- terms.put(fieldName.toString(), term);
- return null;
- }
-
- public Object visit(ASTGENode node, Object data) {
- StringBuilder fieldName = new StringBuilder();
- ObjectHolder value = new ObjectHolder();
- // Process both sides of this node.
- Object left = node.jjtGetChild(0).jjtAccept(this, data);
- Object right = node.jjtGetChild(1).jjtAccept(this, data);
- // Ignore functions in the query
- if (left instanceof FunctionResult || right instanceof FunctionResult)
- return null;
- decodeResults(left, right, fieldName, value);
- // We need to check to see if we are in a NOT context. If so,
- // then we need to reverse the negation.
- boolean negated = false;
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- if (ctx.inNotContext)
- negated = !negated;
- }
- QueryTerm term = new QueryTerm(negated, JexlOperatorConstants.getOperator(node.getClass()), value.getObject());
- terms.put(fieldName.toString(), term);
- return null;
- }
-
- public Object visit(ASTERNode node, Object data) {
- StringBuilder fieldName = new StringBuilder();
- ObjectHolder value = new ObjectHolder();
- // Process both sides of this node.
- Object left = node.jjtGetChild(0).jjtAccept(this, data);
- Object right = node.jjtGetChild(1).jjtAccept(this, data);
- // Ignore functions in the query
- if (left instanceof FunctionResult || right instanceof FunctionResult)
- return null;
- decodeResults(left, right, fieldName, value);
- // We need to check to see if we are in a NOT context. If so,
- // then we need to reverse the negation.
- boolean negated = false;
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- if (ctx.inNotContext)
- negated = !negated;
- }
- QueryTerm term = new QueryTerm(negated, JexlOperatorConstants.getOperator(node.getClass()), value.getObject());
- terms.put(fieldName.toString(), term);
- return null;
- }
-
- public Object visit(ASTNRNode node, Object data) {
- StringBuilder fieldName = new StringBuilder();
- ObjectHolder value = new ObjectHolder();
- // Process both sides of this node.
- Object left = node.jjtGetChild(0).jjtAccept(this, data);
- Object right = node.jjtGetChild(1).jjtAccept(this, data);
- // Ignore functions in the query
- if (left instanceof FunctionResult || right instanceof FunctionResult)
- return null;
- decodeResults(left, right, fieldName, value);
- // We need to check to see if we are in a NOT context. If so,
- // then we need to reverse the negation.
- boolean negated = true;
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- if (ctx.inNotContext)
- negated = !negated;
- }
- if (negated)
- negatedTerms.add(fieldName.toString());
- QueryTerm term = new QueryTerm(negated, JexlOperatorConstants.getOperator(node.getClass()), value.getObject());
- terms.put(fieldName.toString(), term);
- return null;
- }
-
- public Object visit(ASTAdditiveNode node, Object data) {
- return null;
- }
-
- public Object visit(ASTAdditiveOperator node, Object data) {
- return null;
- }
-
- public Object visit(ASTMulNode node, Object data) {
- return null;
- }
-
- public Object visit(ASTDivNode node, Object data) {
- return null;
- }
-
- public Object visit(ASTModNode node, Object data) {
- return null;
- }
-
- public Object visit(ASTUnaryMinusNode node, Object data) {
- return null;
- }
-
- public Object visit(ASTBitwiseComplNode node, Object data) {
- return null;
- }
-
- public Object visit(ASTNotNode node, Object data) {
- boolean previouslyInNotContext = false;
- EvaluationContext ctx = null;
- if (null != data && data instanceof EvaluationContext) {
- ctx = (EvaluationContext) data;
- previouslyInNotContext = ctx.inNotContext;
- } else {
- ctx = new EvaluationContext();
- }
- ctx.inNotContext = true;
- // Process both sides of this node.
- node.jjtGetChild(0).jjtAccept(this, ctx);
- // reset the state
- if (null != data && !previouslyInNotContext)
- ctx.inNotContext = false;
- return null;
- }
-
- public Object visit(ASTIdentifier node, Object data) {
- if (data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- if (ctx.inAndContext)
- andTerms.add(node.image);
- if (ctx.inNotContext)
- negatedTerms.add(node.image);
- if (ctx.inOrContext)
- orTerms.add(node.image);
- }
- return new TermResult(node.image);
- }
-
- public Object visit(ASTNullLiteral node, Object data) {
- literals.add(node.image);
- return new LiteralResult(node.image);
- }
-
- public Object visit(ASTTrueNode node, Object data) {
- return new LiteralResult(node.image);
- }
-
- public Object visit(ASTFalseNode node, Object data) {
- return new LiteralResult(node.image);
- }
-
- public Object visit(ASTIntegerLiteral node, Object data) {
- literals.add(node.image);
- return new LiteralResult(node.image);
- }
-
- public Object visit(ASTFloatLiteral node, Object data) {
- literals.add(node.image);
- return new LiteralResult(node.image);
- }
-
- public Object visit(ASTStringLiteral node, Object data) {
- literals.add("'" + node.image + "'");
- return new LiteralResult("'" + node.image + "'");
- }
-
- public Object visit(ASTArrayLiteral node, Object data) {
- return null;
- }
-
- public Object visit(ASTMapLiteral node, Object data) {
- return null;
- }
-
- public Object visit(ASTMapEntry node, Object data) {
- return null;
- }
-
- public Object visit(ASTEmptyFunction node, Object data) {
- return null;
- }
-
- public Object visit(ASTSizeFunction node, Object data) {
- return null;
- }
-
- public Object visit(ASTFunctionNode node, Object data) {
- // We need to check to see if we are in a NOT context. If so,
- // then we need to reverse the negation.
- boolean negated = true;
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- if (ctx.inNotContext)
- negated = !negated;
- }
- // used to rebuild function call from the AST
- StringBuilder buf = new StringBuilder();
- String sep = "";
- // objectNode 0 is the prefix
- buf.append(node.jjtGetChild(0).image).append(":");
- // objectNode 1 is the identifier , the others are parameters.
- buf.append(node.jjtGetChild(1).image).append("(");
- // process the remaining arguments
- FunctionResult fr = new FunctionResult();
- int argc = node.jjtGetNumChildren() - 2;
- for (int i = 0; i < argc; i++) {
- // Process both sides of this node.
- Object result = node.jjtGetChild(i + 2).jjtAccept(this, data);
- if (result instanceof TermResult) {
- TermResult tr = (TermResult) result;
- fr.getTerms().add(tr);
- buf.append(sep).append(tr.value);
- sep = ", ";
- } else {
- buf.append(sep).append(node.jjtGetChild(i + 2).image);
- sep = ", ";
- }
- }
- buf.append(")");
- // Capture the entire function call for each function parameter
- for (TermResult tr : fr.terms)
- terms.put((String) tr.value, new QueryTerm(negated, JexlOperatorConstants.getOperator(node.getClass()), buf.toString()));
- return fr;
- }
-
- public Object visit(ASTMethodNode node, Object data) {
- return null;
- }
-
- public Object visit(ASTSizeMethod node, Object data) {
- return null;
- }
-
- public Object visit(ASTConstructorNode node, Object data) {
- return null;
- }
-
- public Object visit(ASTArrayAccess node, Object data) {
- return null;
- }
-
- public Object visit(ASTReference node, Object data) {
- return node.jjtGetChild(0).jjtAccept(this, data);
- }
-
- protected void decodeResults(Object left, Object right, StringBuilder fieldName, ObjectHolder holder) {
- if (left instanceof TermResult) {
- TermResult tr = (TermResult) left;
- fieldName.append((String) tr.value);
- // Then the right has to be the value
- if (right instanceof LiteralResult) {
- holder.setObject(((LiteralResult) right).value);
- } else {
- throw new IllegalArgumentException("Object mismatch");
- }
- } else if (right instanceof TermResult) {
- TermResult tr = (TermResult) right;
- fieldName.append((String) tr.value);
- if (left instanceof LiteralResult) {
- holder.setObject(((LiteralResult) left).value);
- } else {
- throw new IllegalArgumentException("Object mismatch");
- }
-
- } else {
- throw new IllegalArgumentException("No Term specified in query");
- }
- }
-}
http://git-wip-us.apache.org/repos/asf/accumulo/blob/8db62992/src/examples/wikisearch/query/src/main/java/org/apache/accumulo/examples/wikisearch/parser/RangeCalculator.java
----------------------------------------------------------------------
diff --git a/src/examples/wikisearch/query/src/main/java/org/apache/accumulo/examples/wikisearch/parser/RangeCalculator.java b/src/examples/wikisearch/query/src/main/java/org/apache/accumulo/examples/wikisearch/parser/RangeCalculator.java
deleted file mode 100644
index 8a5474b..0000000
--- a/src/examples/wikisearch/query/src/main/java/org/apache/accumulo/examples/wikisearch/parser/RangeCalculator.java
+++ /dev/null
@@ -1,1199 +0,0 @@
-/*
- * 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.accumulo.examples.wikisearch.parser;
-
-
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.Map;
-import java.util.Map.Entry;
-import java.util.Set;
-import java.util.TreeSet;
-
-import org.apache.accumulo.core.client.BatchScanner;
-import org.apache.accumulo.core.client.Connector;
-import org.apache.accumulo.core.client.TableNotFoundException;
-import org.apache.accumulo.core.data.Key;
-import org.apache.accumulo.core.data.PartialKey;
-import org.apache.accumulo.core.data.Range;
-import org.apache.accumulo.core.data.Value;
-import org.apache.accumulo.core.security.Authorizations;
-import org.apache.accumulo.examples.wikisearch.iterator.EvaluatingIterator;
-import org.apache.accumulo.examples.wikisearch.logic.AbstractQueryLogic;
-import org.apache.accumulo.examples.wikisearch.normalizer.Normalizer;
-import org.apache.accumulo.examples.wikisearch.protobuf.Uid;
-import org.apache.accumulo.examples.wikisearch.util.TextUtil;
-import org.apache.commons.jexl2.parser.ASTAndNode;
-import org.apache.commons.jexl2.parser.ASTEQNode;
-import org.apache.commons.jexl2.parser.ASTERNode;
-import org.apache.commons.jexl2.parser.ASTFalseNode;
-import org.apache.commons.jexl2.parser.ASTFunctionNode;
-import org.apache.commons.jexl2.parser.ASTGENode;
-import org.apache.commons.jexl2.parser.ASTGTNode;
-import org.apache.commons.jexl2.parser.ASTLENode;
-import org.apache.commons.jexl2.parser.ASTLTNode;
-import org.apache.commons.jexl2.parser.ASTNENode;
-import org.apache.commons.jexl2.parser.ASTNRNode;
-import org.apache.commons.jexl2.parser.ASTNullLiteral;
-import org.apache.commons.jexl2.parser.ASTOrNode;
-import org.apache.commons.jexl2.parser.ASTTrueNode;
-import org.apache.commons.jexl2.parser.ParseException;
-import org.apache.commons.lang.builder.HashCodeBuilder;
-import org.apache.commons.lang.builder.ToStringBuilder;
-import org.apache.hadoop.io.Text;
-import org.apache.log4j.Logger;
-
-import com.google.common.collect.HashMultimap;
-import com.google.common.collect.Multimap;
-import com.google.protobuf.InvalidProtocolBufferException;
-
-/**
- * This class is used to query the global indices to determine that set of ranges to use when querying the shard table. The RangeCalculator looks at each term
- * in the query to determine if it is a equivalence, range, or wildcard comparison, and queries the appropriate index to find the ranges for the terms which are
- * then cached. The final set of ranges is computed as the AST is traversed.
- */
-public class RangeCalculator extends QueryParser {
-
- /**
- * Container used as map keys in this class
- *
- */
- public static class MapKey implements Comparable<MapKey> {
- private String fieldName = null;
- private String fieldValue = null;
- private String originalQueryValue = null;
-
- public MapKey(String fieldName, String fieldValue) {
- super();
- this.fieldName = fieldName;
- this.fieldValue = fieldValue;
- }
-
- public String getFieldName() {
- return fieldName;
- }
-
- public String getFieldValue() {
- return fieldValue;
- }
-
- public void setFieldName(String fieldName) {
- this.fieldName = fieldName;
- }
-
- public void setFieldValue(String fieldValue) {
- this.fieldValue = fieldValue;
- }
-
- public String getOriginalQueryValue() {
- return originalQueryValue;
- }
-
- public void setOriginalQueryValue(String originalQueryValue) {
- this.originalQueryValue = originalQueryValue;
- }
-
- @Override
- public int hashCode() {
- return new HashCodeBuilder(17, 37).append(fieldName).append(fieldValue).toHashCode();
- }
-
- @Override
- public String toString() {
- return this.fieldName + " " + this.fieldValue;
- }
-
- @Override
- public boolean equals(Object other) {
- if (other == null)
- return false;
- if (other instanceof MapKey) {
- MapKey o = (MapKey) other;
- return (this.fieldName.equals(o.fieldName) && this.fieldValue.equals(o.fieldValue));
- } else
- return false;
- }
-
- public int compareTo(MapKey o) {
- int result = this.fieldName.compareTo(o.fieldName);
- if (result != 0) {
- return this.fieldValue.compareTo(o.fieldValue);
- } else {
- return result;
- }
- }
-
- }
-
- /**
- * Container used to hold the lower and upper bound of a range
- *
- */
- public static class RangeBounds {
- private String originalLower = null;
- private Text lower = null;
- private String originalUpper = null;
- private Text upper = null;
-
- public Text getLower() {
- return lower;
- }
-
- public Text getUpper() {
- return upper;
- }
-
- public void setLower(Text lower) {
- this.lower = lower;
- }
-
- public void setUpper(Text upper) {
- this.upper = upper;
- }
-
- public String getOriginalLower() {
- return originalLower;
- }
-
- public String getOriginalUpper() {
- return originalUpper;
- }
-
- public void setOriginalLower(String originalLower) {
- this.originalLower = originalLower;
- }
-
- public void setOriginalUpper(String originalUpper) {
- this.originalUpper = originalUpper;
- }
- }
-
- /**
- *
- * Object that is used to hold ranges found in the index. Subclasses may compute the final range set in various ways.
- */
- protected static class TermRange implements Comparable<TermRange> {
-
- private String fieldName = null;
- private Object fieldValue = null;
- private Set<Range> ranges = new TreeSet<Range>();
-
- public TermRange(String name, Object fieldValue) {
- this.fieldName = name;
- this.fieldValue = fieldValue;
- }
-
- public String getFieldName() {
- return this.fieldName;
- }
-
- public Object getFieldValue() {
- return this.fieldValue;
- }
-
- public void addAll(Set<Range> r) {
- ranges.addAll(r);
- }
-
- public void add(Range r) {
- ranges.add(r);
- }
-
- public Set<Range> getRanges() {
- return ranges;
- }
-
- @Override
- public String toString() {
- ToStringBuilder tsb = new ToStringBuilder(this);
- tsb.append("fieldName", fieldName);
- tsb.append("fieldValue", fieldValue);
- tsb.append("ranges", ranges);
- return tsb.toString();
- }
-
- public int compareTo(TermRange o) {
- int result = this.fieldName.compareTo(o.fieldName);
- if (result == 0) {
- return ((Integer) ranges.size()).compareTo(o.ranges.size());
- } else {
- return result;
- }
- }
- }
-
- /**
- * Object used to store context information as the AST is being traversed.
- */
- static class EvaluationContext {
- boolean inOrContext = false;
- boolean inNotContext = false;
- boolean inAndContext = false;
- TermRange lastRange = null;
- String lastProcessedTerm = null;
- }
-
- protected static Logger log = Logger.getLogger(RangeCalculator.class);
- private static String WILDCARD = ".*";
- private static String SINGLE_WILDCARD = "\\.";
-
- protected Connector c;
- protected Authorizations auths;
- protected Multimap<String,Normalizer> indexedTerms;
- protected Multimap<String,QueryTerm> termsCopy = HashMultimap.create();
- protected String indexTableName;
- protected String reverseIndexTableName;
- protected int queryThreads = 8;
-
- /* final results of index lookups, ranges for the shard table */
- protected Set<Range> result = null;
- /* map of field names to values found in the index */
- protected Multimap<String,String> indexEntries = HashMultimap.create();
- /* map of value in the index to the original query values */
- protected Map<String,String> indexValues = new HashMap<String,String>();
- /* map of values in the query to map keys used */
- protected Multimap<String,MapKey> originalQueryValues = HashMultimap.create();
- /* map of field name to cardinality */
- protected Map<String,Long> termCardinalities = new HashMap<String,Long>();
- /* cached results of all ranges found global index lookups */
- protected Map<MapKey,TermRange> globalIndexResults = new HashMap<MapKey,TermRange>();
-
- /**
- *
- * @param c
- * @param auths
- * @param indexedTerms
- * @param terms
- * @param query
- * @param logic
- * @param typeFilter
- * @throws ParseException
- */
- public void execute(Connector c, Authorizations auths, Multimap<String,Normalizer> indexedTerms, Multimap<String,QueryTerm> terms, String query,
- AbstractQueryLogic logic, Set<String> typeFilter) throws ParseException {
- super.execute(query);
- this.c = c;
- this.auths = auths;
- this.indexedTerms = indexedTerms;
- this.termsCopy.putAll(terms);
- this.indexTableName = logic.getIndexTableName();
- this.reverseIndexTableName = logic.getReverseIndexTableName();
- this.queryThreads = logic.getQueryThreads();
-
- Map<MapKey,Set<Range>> indexRanges = new HashMap<MapKey,Set<Range>>();
- Map<MapKey,Set<Range>> trailingWildcardRanges = new HashMap<MapKey,Set<Range>>();
- Map<MapKey,Set<Range>> leadingWildcardRanges = new HashMap<MapKey,Set<Range>>();
- Map<Text,RangeBounds> rangeMap = new HashMap<Text,RangeBounds>();
-
- // Here we iterate over all of the terms in the query to determine if they are an equivalence,
- // wildcard, or range type operator
- for (Entry<String,QueryTerm> entry : terms.entries()) {
- if (entry.getValue().getOperator().equals(JexlOperatorConstants.getOperator(ASTEQNode.class))
- || entry.getValue().getOperator().equals(JexlOperatorConstants.getOperator(ASTERNode.class))
- || entry.getValue().getOperator().equals(JexlOperatorConstants.getOperator(ASTLTNode.class))
- || entry.getValue().getOperator().equals(JexlOperatorConstants.getOperator(ASTLENode.class))
- || entry.getValue().getOperator().equals(JexlOperatorConstants.getOperator(ASTGTNode.class))
- || entry.getValue().getOperator().equals(JexlOperatorConstants.getOperator(ASTGENode.class))) {
- // If this term is not in the set of indexed terms, then bail
- if (!indexedTerms.containsKey(entry.getKey())) {
- termCardinalities.put(entry.getKey().toUpperCase(), 0L);
- continue;
- }
- // In the case of function calls, the query term could be null. Dont query the index for it.
- if (null == entry.getValue()) {
- termCardinalities.put(entry.getKey().toUpperCase(), 0L);
- continue;
- }
- // In the case where we are looking for 'null', then skip.
- if (null == entry.getValue().getValue() || ((String) entry.getValue().getValue()).equals("null")) {
- termCardinalities.put(entry.getKey().toUpperCase(), 0L);
- continue;
- }
-
- // Remove the begin and end ' marks
- String value = null;
- if (((String) entry.getValue().getValue()).startsWith("'") && ((String) entry.getValue().getValue()).endsWith("'"))
- value = ((String) entry.getValue().getValue()).substring(1, ((String) entry.getValue().getValue()).length() - 1);
- else
- value = (String) entry.getValue().getValue();
- // The entries in the index are normalized
- for (Normalizer normalizer : indexedTerms.get(entry.getKey())) {
- String normalizedFieldValue = normalizer.normalizeFieldValue(null, value);
- Text fieldValue = new Text(normalizedFieldValue);
- Text fieldName = new Text(entry.getKey().toUpperCase());
-
- // EQUALS
- if (entry.getValue().getOperator().equals(JexlOperatorConstants.getOperator(ASTEQNode.class))) {
- Key startRange = new Key(fieldValue, fieldName);
- Range r = new Range(startRange, true, startRange.followingKey(PartialKey.ROW), true);
-
- MapKey key = new MapKey(fieldName.toString(), fieldValue.toString());
- key.setOriginalQueryValue(value);
- this.originalQueryValues.put(value, key);
- if (!indexRanges.containsKey(key))
- indexRanges.put(key, new HashSet<Range>());
- indexRanges.get(key).add(r);
- // WILDCARD
- } else if (entry.getValue().getOperator().equals(JexlOperatorConstants.getOperator(ASTERNode.class))) {
- // This is a wildcard query using regex. We can only support leading and trailing wildcards at this time. Leading
- // wildcards will need be reversed and sent to the global reverse index. Trailing wildcard queries will be sent to the
- // global index. In all cases, the range for the wilcard will be the range of possible UNICODE codepoints, hex 0 to 10FFFF.
- int loc = normalizedFieldValue.indexOf(WILDCARD);
- if (-1 == loc)
- loc = normalizedFieldValue.indexOf(SINGLE_WILDCARD);
- if (-1 == loc) {
- // Then no wildcard in the query? Treat like the equals case above.
- Key startRange = new Key(fieldValue, fieldName);
- Range r = new Range(startRange, true, startRange.followingKey(PartialKey.ROW), true);
-
- MapKey key = new MapKey(fieldName.toString(), fieldValue.toString());
- key.setOriginalQueryValue(value);
- this.originalQueryValues.put(value, key);
- if (!indexRanges.containsKey(key))
- indexRanges.put(key, new HashSet<Range>());
- indexRanges.get(key).add(r);
- } else {
- if (loc == 0) {
- // Then we have a leading wildcard, reverse the term and use the global reverse index.
- StringBuilder buf = new StringBuilder(normalizedFieldValue.substring(2));
- normalizedFieldValue = buf.reverse().toString();
- Key startRange = new Key(new Text(normalizedFieldValue + "\u0000"), fieldName);
- Key endRange = new Key(new Text(normalizedFieldValue + "\u10FFFF"), fieldName);
- Range r = new Range(startRange, true, endRange, true);
-
- MapKey key = new MapKey(fieldName.toString(), normalizedFieldValue);
- key.setOriginalQueryValue(value);
- this.originalQueryValues.put(value, key);
- if (!leadingWildcardRanges.containsKey(key))
- leadingWildcardRanges.put(key, new HashSet<Range>());
- leadingWildcardRanges.get(key).add(r);
- } else if (loc == (normalizedFieldValue.length() - 2)) {
- normalizedFieldValue = normalizedFieldValue.substring(0, loc);
- // Then we have a trailing wildcard character.
- Key startRange = new Key(new Text(normalizedFieldValue + "\u0000"), fieldName);
- Key endRange = new Key(new Text(normalizedFieldValue + "\u10FFFF"), fieldName);
- Range r = new Range(startRange, true, endRange, true);
-
- MapKey key = new MapKey(fieldName.toString(), normalizedFieldValue);
- key.setOriginalQueryValue(value);
- this.originalQueryValues.put(value, key);
- if (!trailingWildcardRanges.containsKey(key))
- trailingWildcardRanges.put(key, new HashSet<Range>());
- trailingWildcardRanges.get(key).add(r);
- } else {
- // throw new RuntimeException("Unsupported wildcard location. Only trailing or leading wildcards are supported: " + normalizedFieldValue);
- // Don't throw an exception, there must be a wildcard in the query, we'll treat it as a filter on the results since it is not
- // leading or trailing.
- }
- }
- // RANGES
- } else if (entry.getValue().getOperator().equals(JexlOperatorConstants.getOperator(ASTGTNode.class))
- || entry.getValue().getOperator().equals(JexlOperatorConstants.getOperator(ASTGENode.class))) {
- // Then we have a lower bound to a range query
- if (!rangeMap.containsKey(fieldName))
- rangeMap.put(fieldName, new RangeBounds());
- rangeMap.get(fieldName).setLower(fieldValue);
- rangeMap.get(fieldName).setOriginalLower(value);
- } else if (entry.getValue().getOperator().equals(JexlOperatorConstants.getOperator(ASTLTNode.class))
- || entry.getValue().getOperator().equals(JexlOperatorConstants.getOperator(ASTLENode.class))) {
- // Then we have an upper bound to a range query
- if (!rangeMap.containsKey(fieldName))
- rangeMap.put(fieldName, new RangeBounds());
- rangeMap.get(fieldName).setUpper(fieldValue);
- rangeMap.get(fieldName).setOriginalUpper(value);
- }
- }
- }
- }
-
- // INDEX RANGE QUERY
- // Now that we have figured out the range bounds, create the index ranges.
- for (Entry<Text,RangeBounds> entry : rangeMap.entrySet()) {
- if (entry.getValue().getLower() != null && entry.getValue().getUpper() != null) {
- // Figure out the key order
- Key lk = new Key(entry.getValue().getLower());
- Key up = new Key(entry.getValue().getUpper());
- Text lower = lk.getRow();
- Text upper = up.getRow();
- // Swith the order if needed.
- if (lk.compareTo(up) > 0) {
- lower = up.getRow();
- upper = lk.getRow();
- }
- Key startRange = new Key(lower, entry.getKey());
- Key endRange = new Key(upper, entry.getKey());
- Range r = new Range(startRange, true, endRange, true);
- // For the range queries we need to query the global index and then handle the results a little differently.
- Map<MapKey,Set<Range>> ranges = new HashMap<MapKey,Set<Range>>();
- MapKey key = new MapKey(entry.getKey().toString(), entry.getValue().getLower().toString());
- key.setOriginalQueryValue(entry.getValue().getOriginalLower().toString());
- this.originalQueryValues.put(entry.getValue().getOriginalLower().toString(), key);
- ranges.put(key, new HashSet<Range>());
- ranges.get(key).add(r);
-
- // Now query the global index and override the field value used in the results map
- try {
- Map<MapKey,TermRange> lowerResults = queryGlobalIndex(ranges, entry.getKey().toString(), this.indexTableName, false, key, typeFilter);
- // Add the results to the global index results for both the upper and lower field values.
- Map<MapKey,TermRange> upperResults = new HashMap<MapKey,TermRange>();
- for (Entry<MapKey,TermRange> e : lowerResults.entrySet()) {
- MapKey key2 = new MapKey(e.getKey().getFieldName(), entry.getValue().getUpper().toString());
- key2.setOriginalQueryValue(entry.getValue().getOriginalUpper().toString());
- upperResults.put(key2, e.getValue());
- this.originalQueryValues.put(entry.getValue().getOriginalUpper(), key2);
-
- }
-
- this.globalIndexResults.putAll(lowerResults);
- this.globalIndexResults.putAll(upperResults);
-
- } catch (TableNotFoundException e) {
- log.error("index table not found", e);
- throw new RuntimeException(" index table not found", e);
- }
- } else {
- log.warn("Unbounded range detected, not querying index for it. Field " + entry.getKey().toString() + " in query: " + query);
- }
- }
- // Now that we have calculated all of the ranges, query the global index.
- try {
-
- // Query for the trailing wildcards if we have any
- for (Entry<MapKey,Set<Range>> trailing : trailingWildcardRanges.entrySet()) {
- Map<MapKey,Set<Range>> m = new HashMap<MapKey,Set<Range>>();
- m.put(trailing.getKey(), trailing.getValue());
- if (log.isDebugEnabled())
- log.debug("Ranges for Wildcard Global Index query: " + m.toString());
- this.globalIndexResults.putAll(queryGlobalIndex(m, trailing.getKey().getFieldName(), this.indexTableName, false, trailing.getKey(), typeFilter));
- }
-
- // Query for the leading wildcards if we have any
- for (Entry<MapKey,Set<Range>> leading : leadingWildcardRanges.entrySet()) {
- Map<MapKey,Set<Range>> m = new HashMap<MapKey,Set<Range>>();
- m.put(leading.getKey(), leading.getValue());
- if (log.isDebugEnabled())
- log.debug("Ranges for Wildcard Global Reverse Index query: " + m.toString());
- this.globalIndexResults.putAll(queryGlobalIndex(m, leading.getKey().getFieldName(), this.reverseIndexTableName, true, leading.getKey(), typeFilter));
- }
-
- // Query for the equals case
- for (Entry<MapKey,Set<Range>> equals : indexRanges.entrySet()) {
- Map<MapKey,Set<Range>> m = new HashMap<MapKey,Set<Range>>();
- m.put(equals.getKey(), equals.getValue());
- if (log.isDebugEnabled())
- log.debug("Ranges for Global Index query: " + m.toString());
- this.globalIndexResults.putAll(queryGlobalIndex(m, equals.getKey().getFieldName(), this.indexTableName, false, equals.getKey(), typeFilter));
- }
- } catch (TableNotFoundException e) {
- log.error("index table not found", e);
- throw new RuntimeException(" index table not found", e);
- }
-
- if (log.isDebugEnabled())
- log.debug("Ranges from Global Index query: " + globalIndexResults.toString());
-
- // Now traverse the AST
- EvaluationContext ctx = new EvaluationContext();
- this.getAST().childrenAccept(this, ctx);
-
- if (ctx.lastRange.getRanges().size() == 0) {
- log.debug("No resulting range set");
- } else {
- if (log.isDebugEnabled())
- log.debug("Setting range results to: " + ctx.lastRange.getRanges().toString());
- this.result = ctx.lastRange.getRanges();
- }
- }
-
- /**
- *
- * @return set of ranges to use for the shard table
- */
- public Set<Range> getResult() {
- return result;
- }
-
- /**
- *
- * @return map of field names to index field values
- */
- public Multimap<String,String> getIndexEntries() {
- return indexEntries;
- }
-
- public Map<String,String> getIndexValues() {
- return indexValues;
- }
-
- /**
- *
- * @return Cardinality for each field name.
- */
- public Map<String,Long> getTermCardinalities() {
- return termCardinalities;
- }
-
- /**
- *
- * @param indexRanges
- * @param tableName
- * @param isReverse
- * switch that determines whether or not to reverse the results
- * @param override
- * mapKey for wildcard and range queries that specify which mapkey to use in the results
- * @param typeFilter
- * - optional list of datatypes
- * @throws TableNotFoundException
- */
- protected Map<MapKey,TermRange> queryGlobalIndex(Map<MapKey,Set<Range>> indexRanges, String specificFieldName, String tableName, boolean isReverse,
- MapKey override, Set<String> typeFilter) throws TableNotFoundException {
-
- // The results map where the key is the field name and field value and the
- // value is a set of ranges. The mapkey will always be the field name
- // and field value that was passed in the original query. The TermRange
- // will contain the field name and field value found in the index.
- Map<MapKey,TermRange> results = new HashMap<MapKey,TermRange>();
-
- // Seed the results map and create the range set for the batch scanner
- Set<Range> rangeSuperSet = new HashSet<Range>();
- for (Entry<MapKey,Set<Range>> entry : indexRanges.entrySet()) {
- rangeSuperSet.addAll(entry.getValue());
- TermRange tr = new TermRange(entry.getKey().getFieldName(), entry.getKey().getFieldValue());
- if (null == override)
- results.put(entry.getKey(), tr);
- else
- results.put(override, tr);
- }
-
- if (log.isDebugEnabled())
- log.debug("Querying global index table: " + tableName + ", range: " + rangeSuperSet.toString() + " colf: " + specificFieldName);
- BatchScanner bs = this.c.createBatchScanner(tableName, this.auths, this.queryThreads);
- bs.setRanges(rangeSuperSet);
- if (null != specificFieldName) {
- bs.fetchColumnFamily(new Text(specificFieldName));
- }
-
- for (Entry<Key,Value> entry : bs) {
- if (log.isDebugEnabled()) {
- log.debug("Index entry: " + entry.getKey().toString());
- }
- String fieldValue = null;
- if (!isReverse) {
- fieldValue = entry.getKey().getRow().toString();
- } else {
- StringBuilder buf = new StringBuilder(entry.getKey().getRow().toString());
- fieldValue = buf.reverse().toString();
- }
-
- String fieldName = entry.getKey().getColumnFamily().toString();
- // Get the shard id and datatype from the colq
- String colq = entry.getKey().getColumnQualifier().toString();
- int separator = colq.indexOf(EvaluatingIterator.NULL_BYTE_STRING);
- String shardId = null;
- String datatype = null;
- if (separator != -1) {
- shardId = colq.substring(0, separator);
- datatype = colq.substring(separator + 1);
- } else {
- shardId = colq;
- }
- // Skip this entry if the type is not correct
- if (null != datatype && null != typeFilter && !typeFilter.contains(datatype))
- continue;
- // Parse the UID.List object from the value
- Uid.List uidList = null;
- try {
- uidList = Uid.List.parseFrom(entry.getValue().get());
- } catch (InvalidProtocolBufferException e) {
- // Don't add UID information, at least we know what shards
- // it is located in.
- }
-
- // Add the count for this shard to the total count for the term.
- long count = 0;
- Long storedCount = termCardinalities.get(fieldName);
- if (null == storedCount || 0 == storedCount) {
- count = uidList.getCOUNT();
- } else {
- count = uidList.getCOUNT() + storedCount;
- }
- termCardinalities.put(fieldName, count);
- this.indexEntries.put(fieldName, fieldValue);
-
- if (null == override)
- this.indexValues.put(fieldValue, fieldValue);
- else
- this.indexValues.put(fieldValue, override.getOriginalQueryValue());
-
- // Create the keys
- Text shard = new Text(shardId);
- if (uidList.getIGNORE()) {
- // Then we create a scan range that is the entire shard
- if (null == override)
- results.get(new MapKey(fieldName, fieldValue)).add(new Range(shard));
- else
- results.get(override).add(new Range(shard));
- } else {
- // We should have UUIDs, create event ranges
- for (String uuid : uidList.getUIDList()) {
- Text cf = new Text(datatype);
- TextUtil.textAppend(cf, uuid);
- Key startKey = new Key(shard, cf);
- Key endKey = new Key(shard, new Text(cf.toString() + EvaluatingIterator.NULL_BYTE_STRING));
- Range eventRange = new Range(startKey, true, endKey, false);
- if (null == override)
- results.get(new MapKey(fieldName, fieldValue)).add(eventRange);
- else
- results.get(override).add(eventRange);
- }
- }
- }
- bs.close();
- return results;
- }
-
- @Override
- public Object visit(ASTOrNode node, Object data) {
- boolean previouslyInOrContext = false;
- EvaluationContext ctx = null;
- if (null != data && data instanceof EvaluationContext) {
- ctx = (EvaluationContext) data;
- previouslyInOrContext = ctx.inOrContext;
- } else {
- ctx = new EvaluationContext();
- }
- ctx.inOrContext = true;
- // Process both sides of this node. Left branch first
- node.jjtGetChild(0).jjtAccept(this, ctx);
- Long leftCardinality = this.termCardinalities.get(ctx.lastProcessedTerm);
- if (null == leftCardinality)
- leftCardinality = 0L;
- TermRange leftRange = ctx.lastRange;
- if (log.isDebugEnabled())
- log.debug("[OR-left] term: " + ctx.lastProcessedTerm + ", cardinality: " + leftCardinality + ", ranges: " + leftRange.getRanges().size());
-
- // Process the right branch
- node.jjtGetChild(1).jjtAccept(this, ctx);
- Long rightCardinality = this.termCardinalities.get(ctx.lastProcessedTerm);
- if (null == rightCardinality)
- rightCardinality = 0L;
- TermRange rightRange = ctx.lastRange;
- if (log.isDebugEnabled())
- log.debug("[OR-right] term: " + ctx.lastProcessedTerm + ", cardinality: " + rightCardinality + ", ranges: " + rightRange.getRanges().size());
-
- // reset the state
- if (null != data && !previouslyInOrContext)
- ctx.inOrContext = false;
- // Add the ranges for the left and right branches to a TreeSet to sort them
- Set<Range> ranges = new TreeSet<Range>();
- ranges.addAll(leftRange.getRanges());
- ranges.addAll(rightRange.getRanges());
- // Now create the union set
- Set<Text> shardsAdded = new HashSet<Text>();
- Set<Range> returnSet = new HashSet<Range>();
- for (Range r : ranges) {
- if (!shardsAdded.contains(r.getStartKey().getRow())) {
- // Only add ranges with a start key for the entire shard.
- if (r.getStartKey().getColumnFamily() == null) {
- shardsAdded.add(r.getStartKey().getRow());
- }
- returnSet.add(r);
- } else {
- // if (log.isTraceEnabled())
- log.info("Skipping event specific range: " + r.toString() + " because shard range has already been added: "
- + shardsAdded.contains(r.getStartKey().getRow()));
- }
- }
- // Clear the ranges from the context and add the result in its place
- TermRange orRange = new TermRange("OR_RESULT", "foo");
- orRange.addAll(returnSet);
- if (log.isDebugEnabled())
- log.debug("[OR] results: " + orRange.getRanges().toString());
- ctx.lastRange = orRange;
- ctx.lastProcessedTerm = "OR_RESULT";
- this.termCardinalities.put("OR_RESULT", (leftCardinality + rightCardinality));
- return null;
- }
-
- @Override
- public Object visit(ASTAndNode node, Object data) {
- boolean previouslyInAndContext = false;
- EvaluationContext ctx = null;
- if (null != data && data instanceof EvaluationContext) {
- ctx = (EvaluationContext) data;
- previouslyInAndContext = ctx.inAndContext;
- } else {
- ctx = new EvaluationContext();
- }
- ctx.inAndContext = true;
- // Process both sides of this node.
- node.jjtGetChild(0).jjtAccept(this, ctx);
- String leftTerm = ctx.lastProcessedTerm;
- Long leftCardinality = this.termCardinalities.get(leftTerm);
- if (null == leftCardinality)
- leftCardinality = 0L;
- TermRange leftRange = ctx.lastRange;
- if (log.isDebugEnabled())
- log.debug("[AND-left] term: " + ctx.lastProcessedTerm + ", cardinality: " + leftCardinality + ", ranges: " + leftRange.getRanges().size());
-
- // Process the right branch
- node.jjtGetChild(1).jjtAccept(this, ctx);
- String rightTerm = ctx.lastProcessedTerm;
- Long rightCardinality = this.termCardinalities.get(rightTerm);
- if (null == rightCardinality)
- rightCardinality = 0L;
- TermRange rightRange = ctx.lastRange;
- if (log.isDebugEnabled())
- log.debug("[AND-right] term: " + ctx.lastProcessedTerm + ", cardinality: " + rightCardinality + ", ranges: " + rightRange.getRanges().size());
-
- // reset the state
- if (null != data && !previouslyInAndContext)
- ctx.inAndContext = false;
-
- long card = 0L;
- TermRange andRange = new TermRange("AND_RESULT", "foo");
- if ((leftCardinality > 0 && leftCardinality <= rightCardinality) || rightCardinality == 0) {
- card = leftCardinality;
- andRange.addAll(leftRange.getRanges());
- } else if ((rightCardinality > 0 && rightCardinality <= leftCardinality) || leftCardinality == 0) {
- card = rightCardinality;
- andRange.addAll(rightRange.getRanges());
- }
- if (log.isDebugEnabled())
- log.debug("[AND] results: " + andRange.getRanges().toString());
- ctx.lastRange = andRange;
- ctx.lastProcessedTerm = "AND_RESULT";
- this.termCardinalities.put("AND_RESULT", card);
-
- return null;
- }
-
- @Override
- public Object visit(ASTEQNode node, Object data) {
- StringBuilder fieldName = new StringBuilder();
- ObjectHolder value = new ObjectHolder();
- // Process both sides of this node.
- Object left = node.jjtGetChild(0).jjtAccept(this, data);
- Object right = node.jjtGetChild(1).jjtAccept(this, data);
- // Ignore functions in the query
- if (left instanceof FunctionResult || right instanceof FunctionResult)
- return null;
- decodeResults(left, right, fieldName, value);
- // We need to check to see if we are in a NOT context. If so,
- // then we need to reverse the negation.
- boolean negated = false;
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- if (ctx.inNotContext)
- negated = !negated;
- }
- QueryTerm term = new QueryTerm(negated, JexlOperatorConstants.getOperator(node.getClass()), value.getObject());
- termsCopy.put(fieldName.toString(), term);
- // Get the terms from the global index
- // Remove the begin and end ' marks
- String termValue = null;
- if (((String) term.getValue()).startsWith("'") && ((String) term.getValue()).endsWith("'"))
- termValue = ((String) term.getValue()).substring(1, ((String) term.getValue()).length() - 1);
- else
- termValue = (String) term.getValue();
- // Get the values found in the index for this query term
- TermRange ranges = null;
- for (MapKey key : this.originalQueryValues.get(termValue)) {
- if (key.getFieldName().equalsIgnoreCase(fieldName.toString())) {
- ranges = this.globalIndexResults.get(key);
- if (log.isDebugEnabled())
- log.debug("Results for cached index ranges for key: " + key + " are " + ranges);
- }
- }
- // If no result for this field name and value, then add empty range
- if (null == ranges)
- ranges = new TermRange(fieldName.toString(), (String) term.getValue());
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- ctx.lastRange = ranges;
- ctx.lastProcessedTerm = fieldName.toString();
- }
- return null;
- }
-
- @Override
- public Object visit(ASTNENode node, Object data) {
- StringBuilder fieldName = new StringBuilder();
- ObjectHolder value = new ObjectHolder();
- // Process both sides of this node.
- Object left = node.jjtGetChild(0).jjtAccept(this, data);
- Object right = node.jjtGetChild(1).jjtAccept(this, data);
- // Ignore functions in the query
- if (left instanceof FunctionResult || right instanceof FunctionResult)
- return null;
- decodeResults(left, right, fieldName, value);
- // We need to check to see if we are in a NOT context. If so,
- // then we need to reverse the negation.
- boolean negated = true;
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- if (ctx.inNotContext)
- negated = !negated;
- }
- if (negated)
- negatedTerms.add(fieldName.toString());
- QueryTerm term = new QueryTerm(negated, JexlOperatorConstants.getOperator(node.getClass()), value.getObject());
- termsCopy.put(fieldName.toString(), term);
- // We can only use the global index for equality, put in fake results
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- ctx.lastRange = new TermRange(fieldName.toString(), term.getValue());
- ctx.lastProcessedTerm = fieldName.toString();
- termCardinalities.put(fieldName.toString(), 0L);
- }
- return null;
- }
-
- @Override
- public Object visit(ASTLTNode node, Object data) {
- StringBuilder fieldName = new StringBuilder();
- ObjectHolder value = new ObjectHolder();
- // Process both sides of this node.
- Object left = node.jjtGetChild(0).jjtAccept(this, data);
- Object right = node.jjtGetChild(1).jjtAccept(this, data);
- // Ignore functions in the query
- if (left instanceof FunctionResult || right instanceof FunctionResult)
- return null;
- decodeResults(left, right, fieldName, value);
- // We need to check to see if we are in a NOT context. If so,
- // then we need to reverse the negation.
- boolean negated = false;
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- if (ctx.inNotContext)
- negated = !negated;
- }
- QueryTerm term = new QueryTerm(negated, JexlOperatorConstants.getOperator(node.getClass()), value.getObject());
- termsCopy.put(fieldName.toString(), term);
- // Get the terms from the global index
- // Remove the begin and end ' marks
- String termValue = null;
- if (((String) term.getValue()).startsWith("'") && ((String) term.getValue()).endsWith("'"))
- termValue = ((String) term.getValue()).substring(1, ((String) term.getValue()).length() - 1);
- else
- termValue = (String) term.getValue();
- // Get the values found in the index for this query term
- TermRange ranges = null;
- for (MapKey key : this.originalQueryValues.get(termValue)) {
- if (key.getFieldName().equalsIgnoreCase(fieldName.toString())) {
- ranges = this.globalIndexResults.get(key);
- if (log.isDebugEnabled())
- log.debug("Results for cached index ranges for key: " + key + " are " + ranges);
- }
- }
- // If no result for this field name and value, then add empty range
- if (null == ranges)
- ranges = new TermRange(fieldName.toString(), (String) term.getValue());
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- ctx.lastRange = ranges;
- ctx.lastProcessedTerm = fieldName.toString();
- }
- return null;
- }
-
- @Override
- public Object visit(ASTGTNode node, Object data) {
- StringBuilder fieldName = new StringBuilder();
- ObjectHolder value = new ObjectHolder();
- // Process both sides of this node.
- Object left = node.jjtGetChild(0).jjtAccept(this, data);
- Object right = node.jjtGetChild(1).jjtAccept(this, data);
- // Ignore functions in the query
- if (left instanceof FunctionResult || right instanceof FunctionResult)
- return null;
- decodeResults(left, right, fieldName, value);
- // We need to check to see if we are in a NOT context. If so,
- // then we need to reverse the negation.
- boolean negated = false;
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- if (ctx.inNotContext)
- negated = !negated;
- }
- QueryTerm term = new QueryTerm(negated, JexlOperatorConstants.getOperator(node.getClass()), value.getObject());
- termsCopy.put(fieldName.toString(), term);
- // Get the terms from the global index
- // Remove the begin and end ' marks
- String termValue = null;
- if (((String) term.getValue()).startsWith("'") && ((String) term.getValue()).endsWith("'"))
- termValue = ((String) term.getValue()).substring(1, ((String) term.getValue()).length() - 1);
- else
- termValue = (String) term.getValue();
- // Get the values found in the index for this query term
- TermRange ranges = null;
- for (MapKey key : this.originalQueryValues.get(termValue)) {
- if (key.getFieldName().equalsIgnoreCase(fieldName.toString())) {
- ranges = this.globalIndexResults.get(key);
- if (log.isDebugEnabled())
- log.debug("Results for cached index ranges for key: " + key + " are " + ranges);
- }
- }
- // If no result for this field name and value, then add empty range
- if (null == ranges)
- ranges = new TermRange(fieldName.toString(), (String) term.getValue());
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- ctx.lastRange = ranges;
- ctx.lastProcessedTerm = fieldName.toString();
- }
- return null;
- }
-
- @Override
- public Object visit(ASTLENode node, Object data) {
- StringBuilder fieldName = new StringBuilder();
- ObjectHolder value = new ObjectHolder();
- // Process both sides of this node.
- Object left = node.jjtGetChild(0).jjtAccept(this, data);
- Object right = node.jjtGetChild(1).jjtAccept(this, data);
- // Ignore functions in the query
- if (left instanceof FunctionResult || right instanceof FunctionResult)
- return null;
- decodeResults(left, right, fieldName, value);
- // We need to check to see if we are in a NOT context. If so,
- // then we need to reverse the negation.
- boolean negated = false;
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- if (ctx.inNotContext)
- negated = !negated;
- }
- QueryTerm term = new QueryTerm(negated, JexlOperatorConstants.getOperator(node.getClass()), value.getObject());
- termsCopy.put(fieldName.toString(), term);
- // Get the terms from the global index
- // Remove the begin and end ' marks
- String termValue = null;
- if (((String) term.getValue()).startsWith("'") && ((String) term.getValue()).endsWith("'"))
- termValue = ((String) term.getValue()).substring(1, ((String) term.getValue()).length() - 1);
- else
- termValue = (String) term.getValue();
- // Get the values found in the index for this query term
- TermRange ranges = null;
- for (MapKey key : this.originalQueryValues.get(termValue)) {
- if (key.getFieldName().equalsIgnoreCase(fieldName.toString())) {
- ranges = this.globalIndexResults.get(key);
- if (log.isDebugEnabled())
- log.debug("Results for cached index ranges for key: " + key + " are " + ranges);
- }
- }
- // If no result for this field name and value, then add empty range
- if (null == ranges)
- ranges = new TermRange(fieldName.toString(), (String) term.getValue());
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- ctx.lastRange = ranges;
- ctx.lastProcessedTerm = fieldName.toString();
- }
- return null;
- }
-
- @Override
- public Object visit(ASTGENode node, Object data) {
- StringBuilder fieldName = new StringBuilder();
- ObjectHolder value = new ObjectHolder();
- // Process both sides of this node.
- Object left = node.jjtGetChild(0).jjtAccept(this, data);
- Object right = node.jjtGetChild(1).jjtAccept(this, data);
- // Ignore functions in the query
- if (left instanceof FunctionResult || right instanceof FunctionResult)
- return null;
- decodeResults(left, right, fieldName, value);
- // We need to check to see if we are in a NOT context. If so,
- // then we need to reverse the negation.
- boolean negated = false;
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- if (ctx.inNotContext)
- negated = !negated;
- }
- QueryTerm term = new QueryTerm(negated, JexlOperatorConstants.getOperator(node.getClass()), value.getObject());
- termsCopy.put(fieldName.toString(), term);
- // Get the terms from the global index
- // Remove the begin and end ' marks
- String termValue = null;
- if (((String) term.getValue()).startsWith("'") && ((String) term.getValue()).endsWith("'"))
- termValue = ((String) term.getValue()).substring(1, ((String) term.getValue()).length() - 1);
- else
- termValue = (String) term.getValue();
- // Get the values found in the index for this query term
- TermRange ranges = null;
- for (MapKey key : this.originalQueryValues.get(termValue)) {
- if (key.getFieldName().equalsIgnoreCase(fieldName.toString())) {
- ranges = this.globalIndexResults.get(key);
- if (log.isDebugEnabled())
- log.debug("Results for cached index ranges for key: " + key + " are " + ranges);
- }
- }
- // If no result for this field name and value, then add empty range
- if (null == ranges)
- ranges = new TermRange(fieldName.toString(), (String) term.getValue());
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- ctx.lastRange = ranges;
- ctx.lastProcessedTerm = fieldName.toString();
- }
- return null;
- }
-
- @Override
- public Object visit(ASTERNode node, Object data) {
- StringBuilder fieldName = new StringBuilder();
- ObjectHolder value = new ObjectHolder();
- // Process both sides of this node.
- Object left = node.jjtGetChild(0).jjtAccept(this, data);
- Object right = node.jjtGetChild(1).jjtAccept(this, data);
- // Ignore functions in the query
- if (left instanceof FunctionResult || right instanceof FunctionResult)
- return null;
- decodeResults(left, right, fieldName, value);
- // We need to check to see if we are in a NOT context. If so,
- // then we need to reverse the negation.
- boolean negated = false;
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- if (ctx.inNotContext)
- negated = !negated;
- }
- QueryTerm term = new QueryTerm(negated, JexlOperatorConstants.getOperator(node.getClass()), value.getObject());
- termsCopy.put(fieldName.toString(), term);
- // Get the terms from the global index
- // Remove the begin and end ' marks
- String termValue = null;
- if (((String) term.getValue()).startsWith("'") && ((String) term.getValue()).endsWith("'"))
- termValue = ((String) term.getValue()).substring(1, ((String) term.getValue()).length() - 1);
- else
- termValue = (String) term.getValue();
- // Get the values found in the index for this query term
- TermRange ranges = null;
- for (MapKey key : this.originalQueryValues.get(termValue)) {
- if (key.getFieldName().equalsIgnoreCase(fieldName.toString())) {
- ranges = this.globalIndexResults.get(key);
- if (log.isDebugEnabled())
- log.debug("Results for cached index ranges for key: " + key + " are " + ranges);
- }
- }
- // If no result for this field name and value, then add empty range
- if (null == ranges)
- ranges = new TermRange(fieldName.toString(), (String) term.getValue());
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- ctx.lastRange = ranges;
- ctx.lastProcessedTerm = fieldName.toString();
- }
-
- return null;
- }
-
- @Override
- public Object visit(ASTNRNode node, Object data) {
- StringBuilder fieldName = new StringBuilder();
- ObjectHolder value = new ObjectHolder();
- // Process both sides of this node.
- Object left = node.jjtGetChild(0).jjtAccept(this, data);
- Object right = node.jjtGetChild(1).jjtAccept(this, data);
- // Ignore functions in the query
- if (left instanceof FunctionResult || right instanceof FunctionResult)
- return null;
- decodeResults(left, right, fieldName, value);
- // We need to check to see if we are in a NOT context. If so,
- // then we need to reverse the negation.
- boolean negated = true;
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- if (ctx.inNotContext)
- negated = !negated;
- }
- if (negated)
- negatedTerms.add(fieldName.toString());
- QueryTerm term = new QueryTerm(negated, JexlOperatorConstants.getOperator(node.getClass()), value.getObject());
- termsCopy.put(fieldName.toString(), term);
- // We can only use the global index for equality, put in fake results
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- ctx.lastRange = new TermRange(fieldName.toString(), term.getValue());
- ctx.lastProcessedTerm = fieldName.toString();
- termCardinalities.put(fieldName.toString(), 0L);
- }
-
- return null;
- }
-
- @Override
- public Object visit(ASTNullLiteral node, Object data) {
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- ctx.lastRange = new TermRange("null", "null");
- ctx.lastProcessedTerm = "null";
- termCardinalities.put("null", 0L);
- }
- return new LiteralResult(node.image);
- }
-
- @Override
- public Object visit(ASTTrueNode node, Object data) {
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- ctx.lastRange = new TermRange("true", "true");
- ctx.lastProcessedTerm = "true";
- termCardinalities.put("true", 0L);
- }
- return new LiteralResult(node.image);
- }
-
- @Override
- public Object visit(ASTFalseNode node, Object data) {
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- ctx.lastRange = new TermRange("false", "false");
- ctx.lastProcessedTerm = "false";
- termCardinalities.put("false", 0L);
- }
- return new LiteralResult(node.image);
- }
-
- @Override
- public Object visit(ASTFunctionNode node, Object data) {
- // objectNode 0 is the prefix
- // objectNode 1 is the identifier , the others are parameters.
- // process the remaining arguments
- FunctionResult fr = new FunctionResult();
- int argc = node.jjtGetNumChildren() - 2;
- for (int i = 0; i < argc; i++) {
- // Process both sides of this node.
- Object result = node.jjtGetChild(i + 2).jjtAccept(this, data);
- if (result instanceof TermResult) {
- TermResult tr = (TermResult) result;
- fr.getTerms().add(tr);
- termsCopy.put((String) tr.value, null);
- }
- }
- if (null != data && data instanceof EvaluationContext) {
- EvaluationContext ctx = (EvaluationContext) data;
- ctx.lastRange = new TermRange(node.jjtGetChild(0).image, node.jjtGetChild(1).image);
- ctx.lastProcessedTerm = node.jjtGetChild(0).image;
- termCardinalities.put(node.jjtGetChild(0).image, 0L);
- }
- return fr;
- }
-
-}