com.hazelcast.org.apache.calcite.adapter.enumerable.EnumerableValuesRule 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.adapter.enumerable;
import com.hazelcast.org.apache.calcite.plan.Convention;
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.LogicalValues;
import com.hazelcast.org.apache.calcite.tools.RelBuilderFactory;
import java.util.function.Predicate;
/** Planner rule that converts a
* {@link com.hazelcast.org.apache.calcite.rel.logical.LogicalValues}
* relational expression
* {@link com.hazelcast.org.apache.calcite.adapter.enumerable.EnumerableConvention enumerable calling convention}. */
public class EnumerableValuesRule extends ConverterRule {
/**
* Creates an EnumerableValuesRule.
*
* @param relBuilderFactory Builder for relational expressions
*/
public EnumerableValuesRule(RelBuilderFactory relBuilderFactory) {
super(LogicalValues.class, (Predicate) r -> true,
Convention.NONE, EnumerableConvention.INSTANCE, relBuilderFactory,
"EnumerableValuesRule");
}
@Override public RelNode convert(RelNode rel) {
final LogicalValues logicalValues = (LogicalValues) rel;
final EnumerableValues enumerableValues = EnumerableValues.create(
logicalValues.getCluster(), logicalValues.getRowType(), logicalValues.getTuples());
return enumerableValues.copy(
logicalValues.getTraitSet().replace(EnumerableConvention.INSTANCE),
enumerableValues.getInputs());
}
}