com.hazelcast.org.apache.calcite.adapter.enumerable.EnumerableInterpreterRule 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.adapter.enumerable;
import com.hazelcast.org.apache.calcite.interpreter.BindableConvention;
import com.hazelcast.org.apache.calcite.rel.RelNode;
import com.hazelcast.org.apache.calcite.rel.convert.ConverterRule;
/**
* Planner rule that converts {@link com.hazelcast.org.apache.calcite.interpreter.BindableRel}
* to {@link com.hazelcast.org.apache.calcite.adapter.enumerable.EnumerableRel} by creating
* an {@link com.hazelcast.org.apache.calcite.adapter.enumerable.EnumerableInterpreter}.
*
* @see EnumerableRules#TO_INTERPRETER
*/
public class EnumerableInterpreterRule extends ConverterRule {
/** Default configuration. */
public static final Config DEFAULT_CONFIG = Config.INSTANCE
.withConversion(RelNode.class, BindableConvention.INSTANCE,
EnumerableConvention.INSTANCE, "EnumerableInterpreterRule")
.withRuleFactory(EnumerableInterpreterRule::new);
protected EnumerableInterpreterRule(Config config) {
super(config);
}
//~ Methods ----------------------------------------------------------------
@Override public RelNode convert(RelNode rel) {
return EnumerableInterpreter.create(rel, 0.5d);
}
}
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