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Support select with statement sql bind and add bind test case
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62 changes: 62 additions & 0 deletions
62
...e/shardingsphere/infra/binder/engine/segment/with/CommonTableExpressionSegmentBinder.java
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| /* | ||
| * 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. | ||
| */ | ||
|
|
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| package org.apache.shardingsphere.infra.binder.engine.segment.with; | ||
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| import com.cedarsoftware.util.CaseInsensitiveMap.CaseInsensitiveString; | ||
| import com.google.common.collect.LinkedHashMultimap; | ||
| import lombok.AccessLevel; | ||
| import lombok.NoArgsConstructor; | ||
| import org.apache.shardingsphere.infra.binder.engine.segment.from.context.type.SimpleTableSegmentBinderContext; | ||
| import org.apache.shardingsphere.infra.binder.engine.segment.from.type.SubqueryTableSegmentBinder; | ||
| import org.apache.shardingsphere.infra.binder.engine.statement.SQLStatementBinderContext; | ||
| import org.apache.shardingsphere.sql.parser.statement.core.segment.dml.expr.complex.CommonTableExpressionSegment; | ||
| import org.apache.shardingsphere.sql.parser.statement.core.segment.dml.item.ColumnProjectionSegment; | ||
| import org.apache.shardingsphere.sql.parser.statement.core.segment.generic.table.SubqueryTableSegment; | ||
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| import java.util.stream.Collectors; | ||
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| /** | ||
| * Common table expression segment binder. | ||
| */ | ||
| @NoArgsConstructor(access = AccessLevel.PRIVATE) | ||
| public final class CommonTableExpressionSegmentBinder { | ||
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| /** | ||
| * Bind common table expression segment. | ||
| * | ||
| * @param segment common table expression segment | ||
| * @param binderContext SQL statement binder context | ||
| * @param recursive recursive | ||
| * @return bound common table expression segment | ||
| */ | ||
| public static CommonTableExpressionSegment bind(final CommonTableExpressionSegment segment, final SQLStatementBinderContext binderContext, final boolean recursive) { | ||
| if (recursive && segment.getAliasName().isPresent()) { | ||
| binderContext.getExternalTableBinderContexts().put(new CaseInsensitiveString(segment.getAliasName().get()), | ||
| new SimpleTableSegmentBinderContext(segment.getColumns().stream().map(ColumnProjectionSegment::new).collect(Collectors.toList()))); | ||
| } | ||
| SubqueryTableSegment subqueryTableSegment = new SubqueryTableSegment(segment.getStartIndex(), segment.getStopIndex(), segment.getSubquery()); | ||
| subqueryTableSegment.setAlias(segment.getAliasSegment()); | ||
| SubqueryTableSegment boundSubquerySegment = | ||
| SubqueryTableSegmentBinder.bind(subqueryTableSegment, binderContext, LinkedHashMultimap.create(), binderContext.getExternalTableBinderContexts()); | ||
| CommonTableExpressionSegment result = new CommonTableExpressionSegment( | ||
| segment.getStartIndex(), segment.getStopIndex(), boundSubquerySegment.getAliasSegment().orElse(null), boundSubquerySegment.getSubquery()); | ||
| // TODO bind with columns | ||
| result.getColumns().addAll(segment.getColumns()); | ||
| return result; | ||
| } | ||
| } |
125 changes: 125 additions & 0 deletions
125
...in/java/org/apache/shardingsphere/infra/binder/engine/segment/with/WithSegmentBinder.java
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| @@ -0,0 +1,125 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
|
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| package org.apache.shardingsphere.infra.binder.engine.segment.with; | ||
|
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| import com.cedarsoftware.util.CaseInsensitiveMap; | ||
| import com.cedarsoftware.util.CaseInsensitiveMap.CaseInsensitiveString; | ||
| import com.google.common.base.Strings; | ||
| import com.google.common.collect.Multimap; | ||
| import lombok.AccessLevel; | ||
| import lombok.NoArgsConstructor; | ||
| import org.apache.shardingsphere.infra.binder.engine.segment.from.context.TableSegmentBinderContext; | ||
| import org.apache.shardingsphere.infra.binder.engine.segment.from.context.type.SimpleTableSegmentBinderContext; | ||
| import org.apache.shardingsphere.infra.binder.engine.statement.SQLStatementBinderContext; | ||
| import org.apache.shardingsphere.sql.parser.statement.core.segment.dml.column.ColumnSegment; | ||
| import org.apache.shardingsphere.sql.parser.statement.core.segment.dml.expr.complex.CommonTableExpressionSegment; | ||
| import org.apache.shardingsphere.sql.parser.statement.core.segment.dml.item.ColumnProjectionSegment; | ||
| import org.apache.shardingsphere.sql.parser.statement.core.segment.dml.item.ProjectionSegment; | ||
| import org.apache.shardingsphere.sql.parser.statement.core.segment.dml.item.ShorthandProjectionSegment; | ||
| import org.apache.shardingsphere.sql.parser.statement.core.segment.generic.WithSegment; | ||
| import org.apache.shardingsphere.sql.parser.statement.core.segment.generic.bound.ColumnSegmentBoundInfo; | ||
| import org.apache.shardingsphere.sql.parser.statement.core.segment.generic.bound.TableSegmentBoundInfo; | ||
| import org.apache.shardingsphere.sql.parser.statement.core.value.identifier.IdentifierValue; | ||
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| import java.util.Collection; | ||
| import java.util.LinkedList; | ||
| import java.util.Map; | ||
| import java.util.Optional; | ||
|
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| /** | ||
| * With segment binder. | ||
| */ | ||
| @NoArgsConstructor(access = AccessLevel.PRIVATE) | ||
| public final class WithSegmentBinder { | ||
|
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| /** | ||
| * Bind with segment. | ||
| * | ||
| * @param segment with segment | ||
| * @param binderContext SQL statement binder context | ||
| * @param externalTableBinderContexts external table binder contexts | ||
| * @return bound with segment | ||
| */ | ||
| public static WithSegment bind(final WithSegment segment, final SQLStatementBinderContext binderContext, | ||
| final Multimap<CaseInsensitiveString, TableSegmentBinderContext> externalTableBinderContexts) { | ||
| Collection<CommonTableExpressionSegment> boundCommonTableExpressions = new LinkedList<>(); | ||
| for (CommonTableExpressionSegment each : segment.getCommonTableExpressions()) { | ||
| CommonTableExpressionSegment boundCommonTableExpression = CommonTableExpressionSegmentBinder.bind(each, binderContext, segment.isRecursive()); | ||
| boundCommonTableExpressions.add(boundCommonTableExpression); | ||
| if (segment.isRecursive() && each.getAliasName().isPresent()) { | ||
| externalTableBinderContexts.removeAll(new CaseInsensitiveString(each.getAliasName().get())); | ||
| } | ||
| bindWithColumns(each.getColumns(), boundCommonTableExpression); | ||
| each.getAliasName().ifPresent(optional -> externalTableBinderContexts.put(new CaseInsensitiveString(optional), createWithTableBinderContext(boundCommonTableExpression))); | ||
| } | ||
| return new WithSegment(segment.getStartIndex(), segment.getStopIndex(), boundCommonTableExpressions); | ||
| } | ||
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| private static SimpleTableSegmentBinderContext createWithTableBinderContext(final CommonTableExpressionSegment commonTableExpressionSegment) { | ||
| return new SimpleTableSegmentBinderContext(commonTableExpressionSegment.getSubquery().getSelect().getProjections().getProjections()); | ||
| } | ||
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| private static void bindWithColumns(final Collection<ColumnSegment> columns, final CommonTableExpressionSegment boundCommonTableExpression) { | ||
| if (columns.isEmpty()) { | ||
| return; | ||
| } | ||
| Map<String, ColumnProjectionSegment> columnProjections = extractWithSubqueryColumnProjections(boundCommonTableExpression); | ||
| columns.forEach(each -> { | ||
| ColumnProjectionSegment projectionSegment = columnProjections.get(each.getIdentifier().getValue()); | ||
| if (null != projectionSegment) { | ||
| each.setColumnBoundInfo(createColumnSegmentBoundInfo(each, projectionSegment.getColumn())); | ||
| } | ||
| }); | ||
| } | ||
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| private static Map<String, ColumnProjectionSegment> extractWithSubqueryColumnProjections(final CommonTableExpressionSegment boundCommonTableExpression) { | ||
| Map<String, ColumnProjectionSegment> result = new CaseInsensitiveMap<>(); | ||
| Collection<ProjectionSegment> projections = boundCommonTableExpression.getSubquery().getSelect().getProjections().getProjections(); | ||
| projections.forEach(each -> extractWithSubqueryColumnProjections(each, result)); | ||
| return result; | ||
| } | ||
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| private static void extractWithSubqueryColumnProjections(final ProjectionSegment projectionSegment, final Map<String, ColumnProjectionSegment> result) { | ||
| if (projectionSegment instanceof ColumnProjectionSegment) { | ||
| result.put(getColumnName((ColumnProjectionSegment) projectionSegment), (ColumnProjectionSegment) projectionSegment); | ||
| } | ||
| if (projectionSegment instanceof ShorthandProjectionSegment) { | ||
| ((ShorthandProjectionSegment) projectionSegment).getActualProjectionSegments().forEach(eachProjection -> { | ||
| if (eachProjection instanceof ColumnProjectionSegment) { | ||
| result.put(getColumnName((ColumnProjectionSegment) eachProjection), (ColumnProjectionSegment) eachProjection); | ||
| } | ||
| }); | ||
| } | ||
| } | ||
|
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| private static String getColumnName(final ColumnProjectionSegment columnProjection) { | ||
| return columnProjection.getAliasName().orElse(columnProjection.getColumn().getIdentifier().getValue()); | ||
| } | ||
|
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| private static ColumnSegmentBoundInfo createColumnSegmentBoundInfo(final ColumnSegment segment, final ColumnSegment inputColumnSegment) { | ||
| IdentifierValue originalDatabase = null == inputColumnSegment ? null : inputColumnSegment.getColumnBoundInfo().getOriginalDatabase(); | ||
| IdentifierValue originalSchema = null == inputColumnSegment ? null : inputColumnSegment.getColumnBoundInfo().getOriginalSchema(); | ||
| IdentifierValue segmentOriginalTable = segment.getColumnBoundInfo().getOriginalTable(); | ||
| IdentifierValue originalTable = Strings.isNullOrEmpty(segmentOriginalTable.getValue()) | ||
| ? Optional.ofNullable(inputColumnSegment).map(optional -> optional.getColumnBoundInfo().getOriginalTable()).orElse(segmentOriginalTable) | ||
| : segmentOriginalTable; | ||
| IdentifierValue segmentOriginalColumn = segment.getColumnBoundInfo().getOriginalColumn(); | ||
| IdentifierValue originalColumn = Optional.ofNullable(inputColumnSegment).map(optional -> optional.getColumnBoundInfo().getOriginalColumn()).orElse(segmentOriginalColumn); | ||
| return new ColumnSegmentBoundInfo(new TableSegmentBoundInfo(originalDatabase, originalSchema), originalTable, originalColumn); | ||
| } | ||
| } |
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