silundong commented on code in PR #4392: URL: https://github.com/apache/calcite/pull/4392#discussion_r2165710631
########## core/src/test/java/org/apache/calcite/test/DphypJoinReorderTest.java: ########## @@ -0,0 +1,288 @@ +/* + * 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.calcite.test; + +import org.apache.calcite.DataContexts; +import org.apache.calcite.adapter.enumerable.EnumerableConvention; +import org.apache.calcite.adapter.enumerable.EnumerableInterpretable; +import org.apache.calcite.adapter.enumerable.EnumerableRel; +import org.apache.calcite.adapter.enumerable.EnumerableRules; +import org.apache.calcite.jdbc.CalcitePrepare; +import org.apache.calcite.jdbc.JavaTypeFactoryImpl; +import org.apache.calcite.linq4j.Enumerable; +import org.apache.calcite.linq4j.Enumerator; +import org.apache.calcite.plan.ConventionTraitDef; +import org.apache.calcite.plan.RelOptCluster; +import org.apache.calcite.plan.RelOptRule; +import org.apache.calcite.plan.RelOptRules; +import org.apache.calcite.plan.RelOptUtil; +import org.apache.calcite.plan.hep.HepMatchOrder; +import org.apache.calcite.plan.hep.HepPlanner; +import org.apache.calcite.plan.hep.HepProgram; +import org.apache.calcite.plan.hep.HepProgramBuilder; +import org.apache.calcite.plan.volcano.VolcanoPlanner; +import org.apache.calcite.rel.RelCollationTraitDef; +import org.apache.calcite.rel.RelNode; +import org.apache.calcite.rel.core.JoinRelType; +import org.apache.calcite.rel.core.RelFactories; +import org.apache.calcite.rel.metadata.RelMetadataQuery; +import org.apache.calcite.rel.rules.CoreRules; +import org.apache.calcite.rel.rules.DpHyp; +import org.apache.calcite.rel.rules.HyperGraph; +import org.apache.calcite.rel.type.RelDataTypeFactory; +import org.apache.calcite.rex.RexBuilder; +import org.apache.calcite.rex.RexNode; +import org.apache.calcite.runtime.Bindable; +import org.apache.calcite.tools.RelBuilder; + +import org.junit.jupiter.api.Test; + +import java.util.ArrayList; +import java.util.Collections; +import java.util.HashSet; +import java.util.List; +import java.util.Set; +import java.util.function.Function; + +public class DphypJoinReorderTest { + + @Test void testInnerLeftSemiJoinReorder() { + // select * from t1 inner join t2 on id1=id2 + // left join t3 on id2=id3 + // where exists (select * from t4 where id3=id4) + Function<RelBuilder, RelNode> function = builder -> + builder + .values(new String[]{"id1", "name1"}, 1, "Tom", 2, "Lucy", 3, "Li") + .values(new String[]{"id2", "name2"}, 1, "Tom", 2, "Lucy") + .join( + JoinRelType.INNER, + builder.equals( + builder.field(2, 0, "id1"), + builder.field(2, 1, "id2"))) + .values(new String[]{"id3", "name3"}, 1, "Tom", 3, "Li", 4, "Peter") + .join( + JoinRelType.LEFT, + builder.equals( + builder.field(2, 0, "id2"), + builder.field(2, 1, "id3"))) + .values(new String[]{"id4", "name4"}, 1, "Tom", 3, "Li") + .semiJoin( + builder.equals( + builder.field(2, 0, "id3"), + builder.field(2, 1, "id4"))) + .build(); + + String expectedResult = "id1=1; name1=Tom; id2=1; name2=Tom; id3=1; name3=Tom\n"; + run(function, expectedResult); + } + + @Test void testChainInnerJoinReorder() { + // select * from t1 inner join t2 on id1=id2 + // inner join t3 on id2=id3 + // inner join t4 on id3=id4 + Function<RelBuilder, RelNode> function = builder -> + builder + .values(new String[]{"id1", "name1"}, 1, "Tom", 2, null, 3, "Li") + .values(new String[]{"id2", "name2"}, 2, "Lucy") + .join( + JoinRelType.INNER, + builder.equals( + builder.field(2, 0, "id1"), + builder.field(2, 1, "id2"))) + .values(new String[]{"id3", "name3"}, 2, "Lucy", 3, "Li", 4, "Peter") + .join( + JoinRelType.INNER, + builder.equals( + builder.field(2, 0, "id2"), + builder.field(2, 1, "id3"))) + .values(new String[]{"id4", "name4"}, 2, "Lucy", 5, "Andy") + .join( + JoinRelType.INNER, + builder.equals( + builder.field(2, 0, "id3"), + builder.field(2, 1, "id4"))) + .build(); + + String expectedResult = + "id1=2; name1=null; id2=2; name2=Lucy; id3=2; name3=Lucy; id4=2; name4=Lucy\n"; + run(function, expectedResult); + } + + @Test void testStarInnerJoinReorder() { + // select * from t1 inner join t2 on id1=id2 + // inner join t3 on id1=id3 + // inner join t4 on id1=id4 + Function<RelBuilder, RelNode> function = builder -> + builder + .values(new String[]{"id1", "name1"}, 1, "Tom", 2, "Lucy", 3, "Li") + .values(new String[]{"id2", "name2"}, 1, "Tom", 2, "Lucy") + .join( + JoinRelType.INNER, + builder.equals( + builder.field(2, 0, "id1"), + builder.field(2, 1, "id2"))) + .values(new String[]{"id3", "name3"}, 1, "Tom", 2, "Lucy", 3, "Li", 4, "Peter") + .join( + JoinRelType.INNER, + builder.equals( + builder.field(2, 0, "id1"), + builder.field(2, 1, "id3"))) + .values(new String[]{"id4", "name4"}, 2, "Lucy", 5, "Andy", 1, "Tom") + .join( + JoinRelType.INNER, + builder.equals( + builder.field(2, 0, "id1"), + builder.field(2, 1, "id4"))) + .build(); + + String expectedResult = + "id1=1; name1=Tom; id2=1; name2=Tom; id3=1; name3=Tom; id4=1; name4=Tom\n" + + "id1=2; name1=Lucy; id2=2; name2=Lucy; id3=2; name3=Lucy; id4=2; name4=Lucy\n"; + run(function, expectedResult); + } + + /** + * Run the customized plan and check whether its execution results meet expectations (ignore row order). + * + * @param customPlanFunction a function that accepts one RelBuilder and produces a RelNode + * @param expectedResult expected result + */ + void run(Function<RelBuilder, RelNode> customPlanFunction, String expectedResult) { + VolcanoPlanner volcanoPlanner = new VolcanoPlanner(); + volcanoPlanner.addRelTraitDef(ConventionTraitDef.INSTANCE); + volcanoPlanner.addRelTraitDef(RelCollationTraitDef.INSTANCE); + + // initialize plan + RelDataTypeFactory typeFactory = + new JavaTypeFactoryImpl(); + RelOptCluster cluster = RelOptCluster.create(volcanoPlanner, new RexBuilder(typeFactory)); + RelBuilder builder = RelFactories.LOGICAL_BUILDER.create(cluster, null); + RelNode initRel = customPlanFunction.apply(builder); + + // convert to HyperGraph + HepProgram program = new HepProgramBuilder() + .addMatchOrder(HepMatchOrder.BOTTOM_UP) + .addRuleInstance(CoreRules.JOIN_TO_HYPER_GRAPH) + .build(); + HepPlanner hepPlanner = new HepPlanner(program); + hepPlanner.setRoot(initRel); + RelNode hyperGraph = hepPlanner.findBestExp(); + assert hyperGraph instanceof HyperGraph : "The root node must be a HyperGraph, " + + "please check the custom plan function. The root node now is:\n" + + RelOptUtil.toString(hyperGraph); + + // start dphyp enumeration + DphypForTest dphyp = + new DphypForTest( + (HyperGraph) hyperGraph, + builder, + hyperGraph.getCluster().getMetadataQuery(), + 127); + dphyp.startEnumerateJoin(); + + // verify the execution results of each candidate plan enumerated by dphyp + for (RelNode candidatePlan : dphyp.candiateLists) { + for (RelOptRule enumerableRule : EnumerableRules.rules()) { + volcanoPlanner.addRule(enumerableRule); + } + for (RelOptRule calcRule : RelOptRules.CALC_RULES) { + volcanoPlanner.addRule(calcRule); + } + volcanoPlanner.removeRule(EnumerableRules.ENUMERABLE_PROJECT_RULE); Review Comment: EnumerableProject does not implement the `implement` function. If you want to execute the plan, it seems that you must replace Project with Calc. -- 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: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
