com.hazelcast.org.apache.calcite.rel.rules.MatchRule 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.rules;

import com.hazelcast.org.apache.calcite.plan.RelOptRule;
import com.hazelcast.org.apache.calcite.plan.RelOptRuleCall;
import com.hazelcast.org.apache.calcite.rel.RelNode;
import com.hazelcast.org.apache.calcite.rel.logical.LogicalMatch;

/**
 * Planner rule that converts a
 * {@link LogicalMatch} to the result
 * of calling {@link LogicalMatch#copy}.
 */
public class MatchRule extends RelOptRule implements TransformationRule {
  //~ Static fields/initializers ---------------------------------------------

  public static final MatchRule INSTANCE = new MatchRule();

  //~ Constructors -----------------------------------------------------------

  private MatchRule() {
    super(operand(LogicalMatch.class, any()));
  }

  //~ Methods ----------------------------------------------------------------

  public void onMatch(RelOptRuleCall call) {
    final LogicalMatch oldRel = call.rel(0);
    final RelNode match = LogicalMatch.create(oldRel.getCluster(),
        oldRel.getTraitSet(), oldRel.getInput(), oldRel.getRowType(),
        oldRel.getPattern(), oldRel.isStrictStart(), oldRel.isStrictEnd(),
        oldRel.getPatternDefinitions(), oldRel.getMeasures(),
        oldRel.getAfter(), oldRel.getSubsets(), oldRel.isAllRows(),
        oldRel.getPartitionKeys(), oldRel.getOrderKeys(),
        oldRel.getInterval());
    call.transformTo(match);
  }
}