com.hazelcast.org.apache.calcite.adapter.enumerable.EnumerableMatchRule Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of hazelcast-sql Show documentation

SQL Parser and Optimizer

There is a newer version: 5.5.0

/*
 * 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.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.core.Match;
import com.hazelcast.org.apache.calcite.rel.logical.LogicalMatch;

/**
 * Rule to convert a {@link LogicalMatch} to an {@link EnumerableMatch}.
 * You may provide a custom config to convert other nodes that extend {@link Match}.
 *
 * @see EnumerableRules#ENUMERABLE_MATCH_RULE
 */
public class EnumerableMatchRule extends ConverterRule {
  /** Default configuration. */
  public static final Config DEFAULT_CONFIG = Config.INSTANCE
      .withConversion(LogicalMatch.class, Convention.NONE,
          EnumerableConvention.INSTANCE, "EnumerableMatchRule")
      .withRuleFactory(EnumerableMatchRule::new);

  /** Creates an EnumerableMatchRule. */
  protected EnumerableMatchRule(Config config) {
    super(config);
  }

  @Override public RelNode convert(RelNode rel) {
    final Match match = (Match) rel;
    return EnumerableMatch.create(
        convert(match.getInput(),
            match.getInput().getTraitSet()
                .replace(EnumerableConvention.INSTANCE)),
        match.getRowType(),
        match.getPattern(), match.isStrictStart(), match.isStrictEnd(),
        match.getPatternDefinitions(), match.getMeasures(), match.getAfter(),
        match.getSubsets(), match.isAllRows(), match.getPartitionKeys(),
        match.getOrderKeys(), match.getInterval());
  }
}