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Posted to notifications@shardingsphere.apache.org by GitBox <gi...@apache.org> on 2022/05/01 15:47:08 UTC
[GitHub] [shardingsphere] tuichenchuxin commented on a diff in pull request #16996: support get postgres create sql
tuichenchuxin commented on code in PR #16996:
URL: https://github.com/apache/shardingsphere/pull/16996#discussion_r862491367
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shardingsphere-infra/shardingsphere-infra-common/src/main/java/org/apache/shardingsphere/infra/metadata/ddlgenerator/dialect/postgres/PostgresConstraintsLoader.java:
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@@ -0,0 +1,262 @@
+/*
+ * 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.shardingsphere.infra.metadata.ddlgenerator.dialect.postgres;
+
+import java.sql.Connection;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.LinkedHashMap;
+import java.util.LinkedList;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+/**
+ * Postgres constraints loader.
+ */
+public final class PostgresConstraintsLoader extends PostgresAbstractLoader {
+
+ public PostgresConstraintsLoader(final Connection connection) {
+ super(connection);
+ }
+
+ /**
+ * Load constraints.
+ *
+ * @param context load context
+ */
+ public void loadConstraints(final Map<String, Object> context) {
+ loadPrimaryOrUniqueConstraint(context, "primary_key", "p");
+ loadPrimaryOrUniqueConstraint(context, "unique_constraint", "u");
+ context.put("foreign_key", fetchForeignKeys(context));
+ context.put("check_constraint", fetchCheckConstraints(context));
+ context.put("exclude_constraint", getExclusionConstraints(context));
+ }
+
+ private Collection<Map<String, Object>> fetchCheckConstraints(final Map<String, Object> context) {
+ Collection<Map<String, Object>> result = new LinkedList<>();
+ for (Map<String, Object> each : getCheckConstraints((Long) context.get("tid"))) {
+ if (!isPartitionAndConstraintInherited(each, context)) {
+ result.add(each);
+ }
+ }
+ return result;
+ }
+
+ private Collection<Map<String, Object>> fetchForeignKeys(final Map<String, Object> context) {
+ Collection<Map<String, Object>> result = new LinkedList<>();
+ for (Map<String, Object> each : getForeignKeys((Long) context.get("tid"))) {
+ if (!isPartitionAndConstraintInherited(each, context)) {
+ result.add(each);
+ }
+ }
+ return result;
+ }
+
+ private void loadPrimaryOrUniqueConstraint(final Map<String, Object> context, final String name, final String type) {
+ Collection<Map<String, Object>> constraintsProperties = fetchConstraintsProperties(context, type);
+ fetchConstraintsColumns(constraintsProperties);
+ context.put(name, constraintsProperties.stream().filter(each -> !isPartitionAndConstraintInherited(each, context)).collect(Collectors.toList()));
+ }
+
+ private void fetchConstraintsColumns(final Collection<Map<String, Object>> constraintsProperties) {
+ for (Map<String, Object> each : constraintsProperties) {
+ Collection<Map<String, Object>> columns = new LinkedList<>();
+ for (Map<String, Object> col : fetchConstraintsCols(each)) {
+ Map<String, Object> column = new HashMap<>();
+ column.put("column", stripQuote((String) col.get("column")));
+ columns.add(column);
+ }
+ each.put("columns", columns);
+ Map<String, Object> param = new LinkedHashMap<>();
+ param.put("cid", each.get("oid"));
+ Collection<Object> includes = new LinkedList<>();
+ for (Map<String, Object> include : executeByTemplate(param, "index_constraint/11_plus/get_constraint_include.ftl")) {
+ includes.add(include.get("colname"));
+ }
+ each.put("include", includes);
+ }
+ }
+
+ private String stripQuote(final String column) {
+ String result = column;
+ if (column.startsWith("\"")) {
+ result = result.substring(1);
+ }
+ if (column.endsWith("\"")) {
+ result = result.substring(0, result.length() - 1);
+ }
+ return result;
+ }
+
+ private Collection<Map<String, Object>> fetchConstraintsCols(final Map<String, Object> constraintColProperties) {
+ Map<String, Object> map = new HashMap<>();
+ map.put("cid", constraintColProperties.get("oid"));
+ map.put("colcnt", constraintColProperties.get("col_count"));
+ return executeByTemplate(map, "index_constraint/default/get_costraint_cols.ftl");
+ }
+
+ private Collection<Map<String, Object>> fetchConstraintsProperties(final Map<String, Object> context, final String constraintType) {
+ Map<String, Object> param = new HashMap<>();
+ param.put("did", context.get("did"));
+ param.put("tid", context.get("tid"));
+ param.put("cid", context.get("cid"));
+ param.put("constraint_type", constraintType);
+ return executeByTemplate(param, "index_constraint/11_plus/properties.ftl");
+ }
+
+ private Collection<Map<String, Object>> getExclusionConstraints(final Map<String, Object> context) {
+ Map<String, Object> param = new HashMap<>();
+ param.put("tid", context.get("tid"));
+ param.put("did", context.get("did"));
+ Collection<Map<String, Object>> result = executeByTemplate(param, "exclusion_constraint/11_plus/properties.ftl");
+ for (Map<String, Object> each : result) {
+ getExclusionConstraintsColumns(each);
+ }
+ return result;
+ }
+
+ private void getExclusionConstraintsColumns(final Map<String, Object> exclusionConstraintsProperties) {
+ Map<String, Object> param = new HashMap<>();
+ param.put("cid", exclusionConstraintsProperties.get("oid"));
+ param.put("col_count", exclusionConstraintsProperties.get("col_count"));
+ Collection<Map<String, Object>> columns = new LinkedList<>();
+ for (Map<String, Object> each : executeByTemplate(param, "exclusion_constraint/9.2_plus/get_constraint_cols.ftl")) {
+ boolean order = (((int) each.get("options")) & 1) == 0;
+ boolean nullsOrder = (((int) each.get("options")) & 2) != 0;
+ Map<String, Object> col = new HashMap<>();
+ col.put("column", strip((String) each.get("coldef")));
+ col.put("oper_class", each.get("opcname"));
+ col.put("order", order);
+ col.put("nulls_order", nullsOrder);
+ col.put("operator", each.get("oprname"));
+ col.put("col_type", each.get("datatype"));
+ col.put("is_exp", each.get("is_exp"));
+ columns.add(col);
+ }
+ exclusionConstraintsProperties.put("columns", columns);
+ Map<String, Object> map = new HashMap<>();
+ map.put("cid", exclusionConstraintsProperties.get("oid"));
+ Collection<String> include = new LinkedList<>();
+ for (Map<String, Object> each : executeByTemplate(map, "exclusion_constraint/11_plus/get_constraint_include.ftl")) {
+ include.add(each.get("colname").toString());
+ }
+ exclusionConstraintsProperties.put("include", include);
+ }
+
+ private Collection<Map<String, Object>> getForeignKeys(final Long tid) {
+ Map<String, Object> param = new HashMap<>();
+ param.put("tid", tid);
+ Collection<Map<String, Object>> result = executeByTemplate(param, "foreign_key/9.1_plus/properties.ftl");
+ for (Map<String, Object> each : result) {
+ Collection<Map<String, Object>> columns = new LinkedList<>();
+ Set<String> cols = new HashSet<>();
+ for (Map<String, Object> col : getForeignKeysCols(tid, each)) {
+ Map<String, Object> f = new HashMap<>();
+ f.put("local_column", col.get("conattname"));
Review Comment:
Thank you. Done.
##########
shardingsphere-infra/shardingsphere-infra-common/src/main/java/org/apache/shardingsphere/infra/metadata/ddlgenerator/dialect/postgres/PostgresConstraintsLoader.java:
##########
@@ -0,0 +1,262 @@
+/*
+ * 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.shardingsphere.infra.metadata.ddlgenerator.dialect.postgres;
+
+import java.sql.Connection;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.LinkedHashMap;
+import java.util.LinkedList;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+/**
+ * Postgres constraints loader.
+ */
+public final class PostgresConstraintsLoader extends PostgresAbstractLoader {
+
+ public PostgresConstraintsLoader(final Connection connection) {
+ super(connection);
+ }
+
+ /**
+ * Load constraints.
+ *
+ * @param context load context
+ */
+ public void loadConstraints(final Map<String, Object> context) {
+ loadPrimaryOrUniqueConstraint(context, "primary_key", "p");
+ loadPrimaryOrUniqueConstraint(context, "unique_constraint", "u");
+ context.put("foreign_key", fetchForeignKeys(context));
+ context.put("check_constraint", fetchCheckConstraints(context));
+ context.put("exclude_constraint", getExclusionConstraints(context));
+ }
+
+ private Collection<Map<String, Object>> fetchCheckConstraints(final Map<String, Object> context) {
+ Collection<Map<String, Object>> result = new LinkedList<>();
+ for (Map<String, Object> each : getCheckConstraints((Long) context.get("tid"))) {
+ if (!isPartitionAndConstraintInherited(each, context)) {
+ result.add(each);
+ }
+ }
+ return result;
+ }
+
+ private Collection<Map<String, Object>> fetchForeignKeys(final Map<String, Object> context) {
+ Collection<Map<String, Object>> result = new LinkedList<>();
+ for (Map<String, Object> each : getForeignKeys((Long) context.get("tid"))) {
+ if (!isPartitionAndConstraintInherited(each, context)) {
+ result.add(each);
+ }
+ }
+ return result;
+ }
+
+ private void loadPrimaryOrUniqueConstraint(final Map<String, Object> context, final String name, final String type) {
+ Collection<Map<String, Object>> constraintsProperties = fetchConstraintsProperties(context, type);
+ fetchConstraintsColumns(constraintsProperties);
+ context.put(name, constraintsProperties.stream().filter(each -> !isPartitionAndConstraintInherited(each, context)).collect(Collectors.toList()));
+ }
+
+ private void fetchConstraintsColumns(final Collection<Map<String, Object>> constraintsProperties) {
+ for (Map<String, Object> each : constraintsProperties) {
+ Collection<Map<String, Object>> columns = new LinkedList<>();
+ for (Map<String, Object> col : fetchConstraintsCols(each)) {
+ Map<String, Object> column = new HashMap<>();
+ column.put("column", stripQuote((String) col.get("column")));
+ columns.add(column);
+ }
+ each.put("columns", columns);
+ Map<String, Object> param = new LinkedHashMap<>();
+ param.put("cid", each.get("oid"));
+ Collection<Object> includes = new LinkedList<>();
+ for (Map<String, Object> include : executeByTemplate(param, "index_constraint/11_plus/get_constraint_include.ftl")) {
+ includes.add(include.get("colname"));
+ }
+ each.put("include", includes);
+ }
+ }
+
+ private String stripQuote(final String column) {
+ String result = column;
+ if (column.startsWith("\"")) {
+ result = result.substring(1);
+ }
+ if (column.endsWith("\"")) {
+ result = result.substring(0, result.length() - 1);
+ }
+ return result;
+ }
+
+ private Collection<Map<String, Object>> fetchConstraintsCols(final Map<String, Object> constraintColProperties) {
+ Map<String, Object> map = new HashMap<>();
+ map.put("cid", constraintColProperties.get("oid"));
+ map.put("colcnt", constraintColProperties.get("col_count"));
+ return executeByTemplate(map, "index_constraint/default/get_costraint_cols.ftl");
+ }
+
+ private Collection<Map<String, Object>> fetchConstraintsProperties(final Map<String, Object> context, final String constraintType) {
+ Map<String, Object> param = new HashMap<>();
+ param.put("did", context.get("did"));
+ param.put("tid", context.get("tid"));
+ param.put("cid", context.get("cid"));
+ param.put("constraint_type", constraintType);
+ return executeByTemplate(param, "index_constraint/11_plus/properties.ftl");
+ }
+
+ private Collection<Map<String, Object>> getExclusionConstraints(final Map<String, Object> context) {
+ Map<String, Object> param = new HashMap<>();
+ param.put("tid", context.get("tid"));
+ param.put("did", context.get("did"));
+ Collection<Map<String, Object>> result = executeByTemplate(param, "exclusion_constraint/11_plus/properties.ftl");
+ for (Map<String, Object> each : result) {
+ getExclusionConstraintsColumns(each);
+ }
+ return result;
+ }
+
+ private void getExclusionConstraintsColumns(final Map<String, Object> exclusionConstraintsProperties) {
+ Map<String, Object> param = new HashMap<>();
+ param.put("cid", exclusionConstraintsProperties.get("oid"));
+ param.put("col_count", exclusionConstraintsProperties.get("col_count"));
+ Collection<Map<String, Object>> columns = new LinkedList<>();
+ for (Map<String, Object> each : executeByTemplate(param, "exclusion_constraint/9.2_plus/get_constraint_cols.ftl")) {
+ boolean order = (((int) each.get("options")) & 1) == 0;
+ boolean nullsOrder = (((int) each.get("options")) & 2) != 0;
+ Map<String, Object> col = new HashMap<>();
+ col.put("column", strip((String) each.get("coldef")));
+ col.put("oper_class", each.get("opcname"));
+ col.put("order", order);
+ col.put("nulls_order", nullsOrder);
+ col.put("operator", each.get("oprname"));
+ col.put("col_type", each.get("datatype"));
+ col.put("is_exp", each.get("is_exp"));
+ columns.add(col);
+ }
+ exclusionConstraintsProperties.put("columns", columns);
+ Map<String, Object> map = new HashMap<>();
+ map.put("cid", exclusionConstraintsProperties.get("oid"));
+ Collection<String> include = new LinkedList<>();
+ for (Map<String, Object> each : executeByTemplate(map, "exclusion_constraint/11_plus/get_constraint_include.ftl")) {
+ include.add(each.get("colname").toString());
+ }
+ exclusionConstraintsProperties.put("include", include);
+ }
+
+ private Collection<Map<String, Object>> getForeignKeys(final Long tid) {
+ Map<String, Object> param = new HashMap<>();
+ param.put("tid", tid);
+ Collection<Map<String, Object>> result = executeByTemplate(param, "foreign_key/9.1_plus/properties.ftl");
+ for (Map<String, Object> each : result) {
+ Collection<Map<String, Object>> columns = new LinkedList<>();
+ Set<String> cols = new HashSet<>();
+ for (Map<String, Object> col : getForeignKeysCols(tid, each)) {
+ Map<String, Object> f = new HashMap<>();
+ f.put("local_column", col.get("conattname"));
+ f.put("references", each.get("confrelid"));
+ f.put("referenced", col.get("confattname"));
+ f.put("references_table_name", each.get("refnsp") + "." + each.get("reftab"));
+ columns.add(f);
+ cols.add((String) col.get("conattname"));
+ }
+ setRemoteName(each, columns);
+ Optional<String> coveringindex = searchCoveringIndex(tid, cols);
+ each.put("coveringindex", coveringindex.orElse(null));
+ each.put("autoindex", !coveringindex.isPresent());
+ each.put("hasindex", coveringindex.isPresent());
+ each.put("columns", columns);
+ }
+ return result;
+ }
+
+ private void setRemoteName(final Map<String, Object> each, final Collection<Map<String, Object>> columns) {
+ Map<String, Object> param = new HashMap<>();
+ param.put("tid", columns.iterator().next().get("references"));
+ Collection<Map<String, Object>> r = executeByTemplate(param, "foreign_key/default/get_parent.ftl");
+ for (Map<String, Object> sf : r) {
Review Comment:
Thank you. Done.
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