korlov42 commented on a change in pull request #9095: URL: https://github.com/apache/ignite/pull/9095#discussion_r640587410
########## File path: modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/exec/rel/IntersectNode.java ########## @@ -0,0 +1,118 @@ +/* + * 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.ignite.internal.processors.query.calcite.exec.rel; + +import org.apache.calcite.rel.type.RelDataType; +import org.apache.ignite.internal.processors.query.calcite.exec.ExecutionContext; +import org.apache.ignite.internal.processors.query.calcite.exec.RowHandler.RowFactory; +import org.apache.ignite.internal.processors.query.calcite.exec.exp.agg.AggregateType; +import org.apache.ignite.internal.processors.query.calcite.exec.exp.agg.GroupKey; + +/** + * Execution node for INTERSECT operator. + */ +public class IntersectNode<Row> extends AbstractSetOpNode<Row> { + /** */ + public IntersectNode(ExecutionContext<Row> ctx, RelDataType rowType, AggregateType type, boolean all, + RowFactory<Row> rowFactory, int inputsCnt) { + super(ctx, rowType, type, all, rowFactory, new IntersectGrouping<>(ctx, rowFactory, type, all, inputsCnt)); + } + + /** */ + private static class IntersectGrouping<Row> extends Grouping<Row> { + /** Inputs count. */ + private final int inputsCnt; + + /** */ + private IntersectGrouping(ExecutionContext<Row> ctx, RowFactory<Row> rowFactory, AggregateType type, + boolean all, int inputsCnt) { + super(ctx, rowFactory, type, all); + + this.inputsCnt = inputsCnt; + } + + /** {@inheritDoc} */ + @Override protected void endOfSet(int setIdx) { + if (type == AggregateType.SINGLE && rowsCnt == 0) + groups.clear(); + + super.endOfSet(setIdx); + } + + /** */ Review comment: ```suggestion /** {@inheritDoc} */ ``` ########## File path: modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/exec/rel/IntersectNode.java ########## @@ -0,0 +1,118 @@ +/* + * 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.ignite.internal.processors.query.calcite.exec.rel; + +import org.apache.calcite.rel.type.RelDataType; +import org.apache.ignite.internal.processors.query.calcite.exec.ExecutionContext; +import org.apache.ignite.internal.processors.query.calcite.exec.RowHandler.RowFactory; +import org.apache.ignite.internal.processors.query.calcite.exec.exp.agg.AggregateType; +import org.apache.ignite.internal.processors.query.calcite.exec.exp.agg.GroupKey; + +/** + * Execution node for INTERSECT operator. + */ +public class IntersectNode<Row> extends AbstractSetOpNode<Row> { + /** */ + public IntersectNode(ExecutionContext<Row> ctx, RelDataType rowType, AggregateType type, boolean all, + RowFactory<Row> rowFactory, int inputsCnt) { + super(ctx, rowType, type, all, rowFactory, new IntersectGrouping<>(ctx, rowFactory, type, all, inputsCnt)); + } + + /** */ + private static class IntersectGrouping<Row> extends Grouping<Row> { + /** Inputs count. */ + private final int inputsCnt; + + /** */ + private IntersectGrouping(ExecutionContext<Row> ctx, RowFactory<Row> rowFactory, AggregateType type, + boolean all, int inputsCnt) { + super(ctx, rowFactory, type, all); + + this.inputsCnt = inputsCnt; + } + + /** {@inheritDoc} */ + @Override protected void endOfSet(int setIdx) { + if (type == AggregateType.SINGLE && rowsCnt == 0) + groups.clear(); + + super.endOfSet(setIdx); + } + + /** */ + @Override protected void addOnSingle(Row row, int setIdx) { + int[] cntrs; + + GroupKey key = key(row); + + if (setIdx == 0) { + cntrs = groups.computeIfAbsent(key, k -> new int[inputsCnt]); + + cntrs[0]++; + } + else { + cntrs = groups.get(key); + + if (cntrs != null) { + if (cntrs[setIdx - 1] == 0) + groups.remove(key); + else + cntrs[setIdx]++; + } + } + } + + /** */ Review comment: ```suggestion /** {@inheritDoc} */ ``` -- This is an automated message from the Apache Git Service. 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