org.apache.hadoop.hive.ql.optimizer.calcite.reloperators.HiveFilter Maven / Gradle / Ivy
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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.hadoop.hive.ql.optimizer.calcite.reloperators;
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.RelNode;
import org.apache.calcite.rel.core.Filter;
import org.apache.calcite.rel.core.RelFactories.FilterFactory;
import org.apache.calcite.rel.metadata.RelMetadataQuery;
import org.apache.calcite.rex.RexNode;
import org.apache.hadoop.hive.ql.optimizer.calcite.TraitsUtil;
public class HiveFilter extends Filter implements HiveRelNode {
public static final FilterFactory DEFAULT_FILTER_FACTORY = new HiveFilterFactoryImpl();
public HiveFilter(RelOptCluster cluster, RelTraitSet traits, RelNode child, RexNode condition) {
super(cluster, TraitsUtil.getDefaultTraitSet(cluster), child, condition);
}
@Override
public Filter copy(RelTraitSet traitSet, RelNode input, RexNode condition) {
assert traitSet.containsIfApplicable(HiveRelNode.CONVENTION);
return new HiveFilter(getCluster(), traitSet, input, getCondition());
}
@Override
public void implement(Implementor implementor) {
}
@Override
public RelOptCost computeSelfCost(RelOptPlanner planner) {
return RelMetadataQuery.getNonCumulativeCost(this);
}
/**
* Implementation of {@link FilterFactory} that returns
* {@link org.apache.hadoop.hive.ql.optimizer.calcite.reloperators.HiveFilter}
* .
*/
private static class HiveFilterFactoryImpl implements FilterFactory {
@Override
public RelNode createFilter(RelNode child, RexNode condition) {
RelOptCluster cluster = child.getCluster();
HiveFilter filter = new HiveFilter(cluster, TraitsUtil.getDefaultTraitSet(cluster), child, condition);
return filter;
}
}
}