com.hazelcast.jet.sql.impl.opt.logical.SortLogicalRule Maven / Gradle / Ivy
/*
* Copyright 2021 Hazelcast Inc.
*
* Licensed under the Hazelcast Community License (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://hazelcast.com/hazelcast-community-license
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.hazelcast.jet.sql.impl.opt.logical;
import com.hazelcast.jet.sql.impl.opt.OptUtils;
import com.hazelcast.org.apache.calcite.plan.Convention;
import com.hazelcast.org.apache.calcite.plan.RelOptRule;
import com.hazelcast.org.apache.calcite.rel.RelNode;
import com.hazelcast.org.apache.calcite.rel.convert.ConverterRule;
import com.hazelcast.org.apache.calcite.rel.core.Sort;
import static com.hazelcast.jet.sql.impl.opt.JetConventions.LOGICAL;
final class SortLogicalRule extends ConverterRule {
static final RelOptRule INSTANCE = new SortLogicalRule();
private SortLogicalRule() {
super(
Sort.class, Convention.NONE, LOGICAL,
SortLogicalRule.class.getSimpleName()
);
}
@Override
public RelNode convert(RelNode rel) {
Sort sort = (Sort) rel;
return new SortLogicalRel(
sort.getCluster(),
OptUtils.toLogicalConvention(sort.getTraitSet()),
OptUtils.toLogicalInput(sort.getInput()),
sort.getCollation(),
sort.offset,
sort.fetch
);
}
}