com.hazelcast.org.apache.calcite.rel.logical.LogicalSortExchange Maven / Gradle / Ivy
/*
* 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 com.hazelcast.com.liance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.com.hazelcast.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 com.hazelcast.org.apache.calcite.rel.logical;
import com.hazelcast.org.apache.calcite.plan.Convention;
import com.hazelcast.org.apache.calcite.plan.RelOptCluster;
import com.hazelcast.org.apache.calcite.plan.RelTraitSet;
import com.hazelcast.org.apache.calcite.rel.RelCollation;
import com.hazelcast.org.apache.calcite.rel.RelCollationTraitDef;
import com.hazelcast.org.apache.calcite.rel.RelDistribution;
import com.hazelcast.org.apache.calcite.rel.RelDistributionTraitDef;
import com.hazelcast.org.apache.calcite.rel.RelInput;
import com.hazelcast.org.apache.calcite.rel.RelNode;
import com.hazelcast.org.apache.calcite.rel.core.SortExchange;
/**
* Sub-class of {@link com.hazelcast.org.apache.calcite.rel.core.SortExchange} not
* targeted at any particular engine or calling convention.
*/
public class LogicalSortExchange extends SortExchange {
private LogicalSortExchange(RelOptCluster cluster, RelTraitSet traitSet,
RelNode input, RelDistribution distribution, RelCollation collation) {
super(cluster, traitSet, input, distribution, collation);
}
/**
* Creates a LogicalSortExchange by parsing serialized output.
*/
public LogicalSortExchange(RelInput input) {
super(input);
}
/**
* Creates a LogicalSortExchange.
*
* @param input Input relational expression
* @param distribution Distribution specification
* @param collation array of sort specifications
*/
public static LogicalSortExchange create(
RelNode input,
RelDistribution distribution,
RelCollation collation) {
RelOptCluster cluster = input.getCluster();
collation = RelCollationTraitDef.INSTANCE.canonize(collation);
distribution = RelDistributionTraitDef.INSTANCE.canonize(distribution);
RelTraitSet traitSet =
input.getTraitSet().replace(Convention.NONE).replace(distribution).replace(collation);
return new LogicalSortExchange(cluster, traitSet, input, distribution,
collation);
}
//~ Methods ----------------------------------------------------------------
@Override public SortExchange copy(RelTraitSet traitSet, RelNode newInput,
RelDistribution newDistribution, RelCollation newCollation) {
return new LogicalSortExchange(this.getCluster(), traitSet, newInput,
newDistribution, newCollation);
}
}