com.hazelcast.sql.impl.calcite.opt.logical.MapScanLogicalRule Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2020, Hazelcast, Inc. All Rights Reserved.
*
* Licensed 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.com.hazelcast.sql.impl.calcite.opt.logical;
import com.hazelcast.com.hazelcast.sql.impl.calcite.opt.HazelcastConventions;
import com.hazelcast.com.hazelcast.sql.impl.calcite.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.logical.LogicalTableScan;
/**
* Converts abstract map scan into logical map scan.
*/
public final class MapScanLogicalRule extends ConverterRule {
public static final RelOptRule INSTANCE = new MapScanLogicalRule();
private MapScanLogicalRule() {
super(LogicalTableScan.class, Convention.NONE, HazelcastConventions.LOGICAL, MapScanLogicalRule.class.getSimpleName());
}
@Override
public RelNode convert(RelNode rel) {
LogicalTableScan scan = (LogicalTableScan) rel;
return new MapScanLogicalRel(
scan.getCluster(),
OptUtils.toLogicalConvention(scan.getTraitSet()),
scan.getTable()
);
}
}