gustavodemorais commented on code in PR #26664: URL: https://github.com/apache/flink/pull/26664#discussion_r2139541285
########## flink-table/flink-table-planner/src/main/java/org/apache/flink/table/planner/plan/nodes/physical/stream/StreamPhysicalMultiJoin.java: ########## @@ -0,0 +1,221 @@ +/* + * 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.physical.stream; + +import org.apache.flink.table.planner.calcite.FlinkTypeFactory; +import org.apache.flink.table.planner.plan.metadata.FlinkRelMetadataQuery; +import org.apache.flink.table.planner.plan.nodes.exec.ExecNode; +import org.apache.flink.table.planner.plan.nodes.exec.InputProperty; +import org.apache.flink.table.planner.plan.nodes.exec.stream.StreamExecMultiJoin; +import org.apache.flink.table.runtime.operators.join.FlinkJoinType; +import org.apache.flink.table.runtime.operators.join.stream.keyselector.AttributeBasedJoinKeyExtractor.ConditionAttributeRef; + +import org.apache.calcite.linq4j.Ord; +import org.apache.calcite.plan.RelOptCluster; +import org.apache.calcite.plan.RelOptCost; +import org.apache.calcite.plan.RelOptPlanner; +import org.apache.calcite.plan.RelTraitSet; +import org.apache.calcite.rel.AbstractRelNode; +import org.apache.calcite.rel.RelNode; +import org.apache.calcite.rel.RelWriter; +import org.apache.calcite.rel.core.JoinRelType; +import org.apache.calcite.rel.hint.RelHint; +import org.apache.calcite.rel.metadata.RelMetadataQuery; +import org.apache.calcite.rel.type.RelDataType; +import org.apache.calcite.rex.RexNode; +import org.apache.calcite.rex.RexUtil; +import org.apache.calcite.util.ImmutableBitSet; +import org.checkerframework.checker.nullness.qual.Nullable; + +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.stream.Collectors; + +import static org.apache.flink.table.planner.utils.ShortcutUtils.unwrapTableConfig; + +/** + * Stream physical RelNode for a multi-input regular join. + * + * <p>This node takes multiple inputs and joins them based on a given filter condition. It supports + * different join types for each pair of inputs. This node will be translated into a {@link + * StreamExecMultiJoin}. + */ +public class StreamPhysicalMultiJoin extends AbstractRelNode implements StreamPhysicalRel { + + private List<RelNode> inputs; + private final RexNode joinFilter; + private final List<JoinRelType> joinTypes; + private final List<? extends @Nullable RexNode> joinConditions; + + /** + * A map from input index to a list of {@link ConditionAttributeRef}. Each {@link + * ConditionAttributeRef} represents a join condition associated with the input. + */ + private final Map<Integer, List<ConditionAttributeRef>> joinAttributeMap; + + private final @Nullable RexNode postJoinFilter; + private final List<RelHint> hints; + + public StreamPhysicalMultiJoin( + final RelOptCluster cluster, + final RelTraitSet traitSet, + final List<RelNode> inputs, + final RexNode joinFilter, + final RelDataType rowType, + final List<? extends @Nullable RexNode> joinConditions, + final List<JoinRelType> joinTypes, + final Map<Integer, List<ConditionAttributeRef>> joinAttributeMap, + final @Nullable RexNode postJoinFilter, + final List<RelHint> hints) { + super(cluster, traitSet); + this.inputs = inputs; + this.rowType = rowType; + this.joinFilter = joinFilter; + this.joinTypes = joinTypes; + this.joinConditions = joinConditions; + this.joinAttributeMap = joinAttributeMap; + this.postJoinFilter = postJoinFilter; + this.hints = hints; + } + + @Override + public boolean requireWatermark() { + return false; + } + + @Override + public List<RelNode> getInputs() { + return inputs; + } + + @Override + public void replaceInput(final int ordinalInParent, final RelNode p) { + final List<RelNode> newInputs = new ArrayList<>(inputs); + newInputs.set(ordinalInParent, p); + this.inputs = List.copyOf(newInputs); + recomputeDigest(); + } + + @Override + public RelNode copy(final RelTraitSet traitSet, final List<RelNode> inputs) { + return new StreamPhysicalMultiJoin( + getCluster(), + traitSet, + inputs, + joinFilter, + getRowType(), + joinConditions, + joinTypes, + joinAttributeMap, + postJoinFilter, + hints); + } + + @Override + public RelOptCost computeSelfCost(final RelOptPlanner planner, final RelMetadataQuery mq) { + final double elementRate = 100.0d * getInputs().size(); + return planner.getCostFactory().makeCost(elementRate, elementRate, 0); + } + + @Override + public RelWriter explainTerms(final RelWriter pw) { + super.explainTerms(pw); + for (final Ord<RelNode> ord : Ord.zip(inputs)) { + pw.input("input#" + ord.i, ord.e); + } + return pw.item("joinFilter", joinFilter) + .item("joinTypes", joinTypes) + .item("joinConditions", joinConditions) + .itemIf("postJoinFilter", postJoinFilter, postJoinFilter != null) + .item("select", String.join(",", getRowType().getFieldNames())) + .item("rowType", getRowType()); + } + + @Override + protected RelDataType deriveRowType() { + return this.rowType; + } + + @Override + public ExecNode<?> translateToExecNode() { + final RexNode multiJoinCondition = createMultiJoinCondition(); + final List<List<int[]>> inputUpsertKeys = getUpsertKeysForInputs(); + final List<FlinkJoinType> execJoinTypes = getExecJoinTypes(); + + return new StreamExecMultiJoin( + unwrapTableConfig(this), + execJoinTypes, + joinConditions, + multiJoinCondition, + joinAttributeMap, + inputUpsertKeys, + Collections.emptyMap(), // TODO Enable hint-based state ttl. See ticket + // TODO https://issues.apache.org/jira/browse/FLINK-37936 Review Comment: Yep, wanted to do it and forgot. Updated the Jira! -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@flink.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
