org.apache.flink.table.planner.plan.rules.logical.FlinkLogicalCalcRemoveRule Maven / Gradle / Ivy
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This module bridges Table/SQL API and runtime. It contains
all resources that are required during pre-flight and runtime
phase. The content of this module is work-in-progress. It will
replace flink-table-planner once it is stable. See FLINK-11439
and FLIP-32 for more details.
/*
* 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 org.apache.flink.table.planner.plan.rules.logical;
import org.apache.flink.table.planner.plan.nodes.logical.FlinkLogicalCalc;
import org.apache.calcite.rel.rules.CalcRemoveRule;
import static org.apache.calcite.rel.rules.CalcRemoveRule.Config;
/** Rule to remove trivial {@link FlinkLogicalCalc}. */
public class FlinkLogicalCalcRemoveRule {
public static final CalcRemoveRule INSTANCE =
Config.DEFAULT
.withOperandSupplier(
b ->
b.operand(FlinkLogicalCalc.class)
.predicate(calc -> calc.getProgram().isTrivial())
.anyInputs())
.as(Config.class)
.toRule();
}