com.hazelcast.org.apache.calcite.rel.convert.NoneConverter 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 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 com.hazelcast.org.apache.calcite.rel.convert;
import com.hazelcast.org.apache.calcite.plan.Convention;
import com.hazelcast.org.apache.calcite.plan.ConventionTraitDef;
import com.hazelcast.org.apache.calcite.plan.RelOptCluster;
import com.hazelcast.org.apache.calcite.plan.RelOptPlanner;
import com.hazelcast.org.apache.calcite.plan.RelTraitSet;
import com.hazelcast.org.apache.calcite.rel.RelNode;
import com.hazelcast.org.apache.calcite.util.Util;
import java.util.List;
/**
* NoneConverter
converts a plan from inConvention
to
* {@link com.hazelcast.org.apache.calcite.plan.Convention#NONE}.
*/
public class NoneConverter extends ConverterImpl {
//~ Constructors -----------------------------------------------------------
public NoneConverter(
RelOptCluster cluster,
RelNode child) {
super(
cluster,
ConventionTraitDef.INSTANCE,
cluster.traitSetOf(Convention.NONE),
child);
}
//~ Methods ----------------------------------------------------------------
@Override public RelNode copy(RelTraitSet traitSet, List inputs) {
assert traitSet.comprises(Convention.NONE);
return new NoneConverter(
getCluster(),
sole(inputs));
}
public static void init(RelOptPlanner planner) {
// we can't convert from any conventions, therefore no rules to register
Util.discard(planner);
}
}
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