content: /*
   * 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.calcite.rel.mutable;
  
  import org.apache.calcite.plan.RelOptCluster;
  import org.apache.calcite.rel.type.RelDataType;
  
  import org.checkerframework.checker.nullness.qual.Nullable;
  
  import java.util.List;
  import java.util.Objects;
  
  /** Mutable equivalent of {@link org.apache.calcite.rel.core.SetOp}. */
  public abstract class MutableSetOp extends MutableMultiRel {
    protected final boolean all;
  
    protected MutableSetOp(RelOptCluster cluster, RelDataType rowType,
        MutableRelType type, List<MutableRel> inputs, boolean all) {
      super(cluster, rowType, type, inputs);
      this.all = all;
    }
  
    public boolean isAll() {
      return all;
    }
  
    @Override public boolean equals(@Nullable Object obj) {
      return obj == this
          || obj instanceof MutableSetOp
          && type == ((MutableSetOp) obj).type
          && all == ((MutableSetOp) obj).all
          && inputs.equals(((MutableSetOp) obj).getInputs());
    }
  
    @Override public int hashCode() {
      return Objects.hash(type, inputs, all);
    }
  }
  