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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.
*/
package org.apache.drill.exec.planner.physical;
import java.io.IOException;
import java.util.List;
import org.apache.calcite.rel.core.Join;
import org.apache.calcite.rel.metadata.RelMetadataQuery;
import org.apache.drill.common.logical.data.JoinCondition;
import org.apache.drill.exec.physical.base.PhysicalOperator;
import org.apache.drill.exec.physical.config.HashJoinPOP;
import org.apache.drill.exec.physical.impl.join.JoinUtils;
import org.apache.drill.exec.physical.impl.join.JoinUtils.JoinCategory;
import org.apache.drill.exec.planner.common.JoinControl;
import org.apache.drill.exec.record.BatchSchema.SelectionVectorMode;
import org.apache.calcite.rel.InvalidRelException;
import org.apache.calcite.rel.core.JoinRelType;
import org.apache.calcite.rel.RelNode;
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.rex.RexNode;
import org.apache.drill.shaded.guava.com.google.common.collect.Lists;
import org.apache.drill.exec.work.filter.RuntimeFilterDef;
public class HashJoinPrel extends JoinPrel {
private boolean swapped = false;
private RuntimeFilterDef runtimeFilterDef;
protected boolean isRowKeyJoin = false;
private int joinControl;
public HashJoinPrel(RelOptCluster cluster, RelTraitSet traits, RelNode left, RelNode right, RexNode condition,
JoinRelType joinType) throws InvalidRelException {
this(cluster, traits, left, right, condition, joinType, false, null, false, JoinControl.DEFAULT);
}
public HashJoinPrel(RelOptCluster cluster, RelTraitSet traits, RelNode left, RelNode right, RexNode condition,
JoinRelType joinType, boolean swapped, RuntimeFilterDef runtimeFilterDef,
boolean isRowKeyJoin, int joinControl) throws InvalidRelException {
super(cluster, traits, left, right, condition, joinType);
this.swapped = swapped;
this.isRowKeyJoin = isRowKeyJoin;
joincategory = JoinUtils.getJoinCategory(left, right, condition, leftKeys, rightKeys, filterNulls);
this.runtimeFilterDef = runtimeFilterDef;
this.joinControl = joinControl;
}
@Override
public Join copy(RelTraitSet traitSet, RexNode conditionExpr, RelNode left, RelNode right, JoinRelType joinType, boolean semiJoinDone) {
try {
return new HashJoinPrel(this.getCluster(), traitSet, left, right, conditionExpr, joinType, this.swapped, this.runtimeFilterDef,
this.isRowKeyJoin, this.joinControl);
}catch (InvalidRelException e) {
throw new AssertionError(e);
}
}
@Override
public RelOptCost computeSelfCost(RelOptPlanner planner, RelMetadataQuery mq) {
if (PrelUtil.getSettings(getCluster()).useDefaultCosting()) {
return super.computeSelfCost(planner, mq).multiplyBy(.1);
}
if (joincategory == JoinCategory.CARTESIAN || joincategory == JoinCategory.INEQUALITY) {
return planner.getCostFactory().makeInfiniteCost();
}
return computeHashJoinCost(planner, mq);
}
@Override
public org.apache.drill.exec.physical.base.PhysicalOperator getPhysicalOperator(PhysicalPlanCreator creator) throws IOException {
// Depending on whether the left/right is swapped for hash inner join, pass in different
// combinations of parameters.
if (! swapped) {
return getHashJoinPop(creator, left, right, leftKeys, rightKeys, isRowKeyJoin, joinControl);
} else {
return getHashJoinPop(creator, right, left, rightKeys, leftKeys, isRowKeyJoin, joinControl);
}
}
@Override
public SelectionVectorMode[] getSupportedEncodings() {
return SelectionVectorMode.DEFAULT;
}
@Override
public SelectionVectorMode getEncoding() {
return SelectionVectorMode.NONE;
}
private PhysicalOperator getHashJoinPop(PhysicalPlanCreator creator, RelNode left, RelNode right,
List<Integer> leftKeys, List<Integer> rightKeys,
boolean isRowKeyJoin, int htControl) throws IOException{
final List<String> fields = getRowType().getFieldNames();
assert isUnique(fields);
final List<String> leftFields = left.getRowType().getFieldNames();
final List<String> rightFields = right.getRowType().getFieldNames();
PhysicalOperator leftPop = ((Prel)left).getPhysicalOperator(creator);
PhysicalOperator rightPop = ((Prel)right).getPhysicalOperator(creator);
JoinRelType jtype = this.getJoinType();
List<JoinCondition> conditions = Lists.newArrayList();
buildJoinConditions(conditions, leftFields, rightFields, leftKeys, rightKeys);
RuntimeFilterDef runtimeFilterDef = this.getRuntimeFilterDef();
HashJoinPOP hjoin = new HashJoinPOP(leftPop, rightPop, conditions, jtype, runtimeFilterDef, isRowKeyJoin, htControl);
return creator.addMetadata(this, hjoin);
}
public void setSwapped(boolean swapped) {
this.swapped = swapped;
}
public boolean isSwapped() {
return this.swapped;
}
public RuntimeFilterDef getRuntimeFilterDef() {
return runtimeFilterDef;
}
public void setRuntimeFilterDef(RuntimeFilterDef runtimeFilterDef) {
this.runtimeFilterDef = runtimeFilterDef;
}
public boolean isRowKeyJoin() {
return this.isRowKeyJoin;
}
}
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