com.hazelcast.org.apache.calcite.rel.logical.LogicalRepeatUnion 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.rel.logical;

import com.hazelcast.org.apache.calcite.linq4j.function.Experimental;
import com.hazelcast.org.apache.calcite.plan.Convention;
import com.hazelcast.org.apache.calcite.plan.RelOptCluster;
import com.hazelcast.org.apache.calcite.plan.RelOptTable;
import com.hazelcast.org.apache.calcite.plan.RelTraitSet;
import com.hazelcast.org.apache.calcite.rel.RelNode;
import com.hazelcast.org.apache.calcite.rel.core.RepeatUnion;

import com.hazelcast.org.checkerframework.checker.nullness.qual.Nullable;

import java.util.List;

/**
 * Sub-class of {@link com.hazelcast.org.apache.calcite.rel.core.RepeatUnion}
 * not targeted at any particular engine or calling convention.
 *
 * NOTE: The current API is experimental and subject to change without
 * notice.
 */
@Experimental
public class LogicalRepeatUnion extends RepeatUnion {

  //~ Constructors -----------------------------------------------------------
  private LogicalRepeatUnion(RelOptCluster cluster, RelTraitSet traitSet,
      RelNode seed, RelNode iterative, boolean all, int iterationLimit,
      @Nullable RelOptTable transientTable) {
    super(cluster, traitSet, seed, iterative, all, iterationLimit, transientTable);
  }

  /** Creates a LogicalRepeatUnion. */
  public static LogicalRepeatUnion create(RelNode seed, RelNode iterative,
      boolean all, @Nullable RelOptTable transientTable) {
    return create(seed, iterative, all, -1, transientTable);
  }

  /** Creates a LogicalRepeatUnion. */
  public static LogicalRepeatUnion create(RelNode seed, RelNode iterative,
      boolean all, int iterationLimit, @Nullable RelOptTable transientTable) {
    RelOptCluster cluster = seed.getCluster();
    RelTraitSet traitSet = cluster.traitSetOf(Convention.NONE);
    return new LogicalRepeatUnion(cluster, traitSet, seed, iterative, all, iterationLimit,
        transientTable);
  }

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

  @Override public LogicalRepeatUnion copy(RelTraitSet traitSet,
      List inputs) {
    assert traitSet.containsIfApplicable(Convention.NONE);
    assert inputs.size() == 2;
    return new LogicalRepeatUnion(getCluster(), traitSet,
        inputs.get(0), inputs.get(1), all, iterationLimit, transientTable);
  }
}