godfreyhe commented on a change in pull request #14685: URL: https://github.com/apache/flink/pull/14685#discussion_r559882945
########## File path: flink-table/flink-table-planner-blink/src/main/java/org/apache/flink/table/planner/plan/nodes/exec/stream/StreamExecJoin.java ########## @@ -0,0 +1,159 @@ +/* + * 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.flink.table.planner.plan.nodes.exec.stream; + +import org.apache.flink.api.dag.Transformation; +import org.apache.flink.streaming.api.transformations.TwoInputTransformation; +import org.apache.flink.table.api.TableConfig; +import org.apache.flink.table.data.RowData; +import org.apache.flink.table.planner.delegation.PlannerBase; +import org.apache.flink.table.planner.plan.nodes.exec.ExecEdge; +import org.apache.flink.table.planner.plan.nodes.exec.ExecNode; +import org.apache.flink.table.planner.plan.nodes.exec.ExecNodeBase; +import org.apache.flink.table.planner.plan.nodes.exec.utils.JoinSpec; +import org.apache.flink.table.planner.plan.utils.JoinUtil; +import org.apache.flink.table.planner.plan.utils.KeySelectorUtil; +import org.apache.flink.table.runtime.generated.GeneratedJoinCondition; +import org.apache.flink.table.runtime.keyselector.RowDataKeySelector; +import org.apache.flink.table.runtime.operators.join.FlinkJoinType; +import org.apache.flink.table.runtime.operators.join.stream.AbstractStreamingJoinOperator; +import org.apache.flink.table.runtime.operators.join.stream.StreamingJoinOperator; +import org.apache.flink.table.runtime.operators.join.stream.StreamingSemiAntiJoinOperator; +import org.apache.flink.table.runtime.operators.join.stream.state.JoinInputSideSpec; +import org.apache.flink.table.runtime.typeutils.InternalTypeInfo; +import org.apache.flink.table.types.logical.RowType; + +import org.apache.flink.shaded.guava18.com.google.common.collect.Lists; + +import java.util.List; + +/** + * {@link StreamExecNode} for regular Joins. + * + * <p>Regular joins are the most generic type of join in which any new records or changes to either + * side of the join input are visible and are affecting the whole join result. + */ +public class StreamExecJoin extends ExecNodeBase<RowData> implements StreamExecNode<RowData> { + + private final JoinSpec joinSpec; + private final List<int[]> leftUniqueKeys; + private final List<int[]> rightUniqueKeys; + + public StreamExecJoin( + JoinSpec joinSpec, + List<int[]> leftUniqueKeys, + List<int[]> rightUniqueKeys, + ExecEdge leftEdge, + ExecEdge rightEdge, + RowType outputType, + String description) { + super(Lists.newArrayList(leftEdge, rightEdge), outputType, description); + this.joinSpec = joinSpec; + this.leftUniqueKeys = leftUniqueKeys; + this.rightUniqueKeys = rightUniqueKeys; + } + + @Override + @SuppressWarnings("unchecked") + protected Transformation<RowData> translateToPlanInternal(PlannerBase planner) { + final TableConfig tableConfig = planner.getTableConfig(); + + final ExecNode<RowData> leftInput = (ExecNode<RowData>) getInputNodes().get(0); + final ExecNode<RowData> rightInput = (ExecNode<RowData>) getInputNodes().get(1); + + final Transformation<RowData> leftTransform = leftInput.translateToPlan(planner); + final Transformation<RowData> rightTransform = rightInput.translateToPlan(planner); + + final RowType leftType = (RowType) leftInput.getOutputType(); + final RowType rightType = (RowType) rightInput.getOutputType(); + JoinUtil.validateJoinSpec(joinSpec, leftType, rightType, true); + + final int[] leftJoinKey = joinSpec.getLeftKeys(); + final int[] rightJoinKey = joinSpec.getRightKeys(); + + final InternalTypeInfo<RowData> leftTypeInfo = InternalTypeInfo.of(leftType); + final JoinInputSideSpec leftInputSpec = + JoinUtil.analyzeJoinInput(leftTypeInfo, leftJoinKey, leftUniqueKeys); + + final InternalTypeInfo<RowData> rightTypeInfo = InternalTypeInfo.of(leftType); + final JoinInputSideSpec rightInputSpec = + JoinUtil.analyzeJoinInput(rightTypeInfo, rightJoinKey, rightUniqueKeys); + + RowDataKeySelector leftSelect = + KeySelectorUtil.getRowDataSelector(leftJoinKey, leftTypeInfo); + RowDataKeySelector rightSelect = + KeySelectorUtil.getRowDataSelector(rightJoinKey, rightTypeInfo); Review comment: nit: move them closed to where it is used ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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