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.rel.type.RelDataType;
  
  import org.checkerframework.checker.nullness.qual.Nullable;
  
  import java.util.Objects;
  
  /** Mutable equivalent of {@link org.apache.calcite.rel.core.Uncollect}. */
  public class MutableUncollect extends MutableSingleRel {
    public final boolean withOrdinality;
  
    private MutableUncollect(RelDataType rowType,
        MutableRel input, boolean withOrdinality) {
      super(MutableRelType.UNCOLLECT, rowType, input);
      this.withOrdinality = withOrdinality;
    }
  
    /**
     * Creates a MutableUncollect.
     *
     * @param rowType         Row type
     * @param input           Input relational expression
     * @param withOrdinality  Whether the output contains an extra
     *                        {@code ORDINALITY} column
     */
    public static MutableUncollect of(RelDataType rowType,
        MutableRel input, boolean withOrdinality) {
      return new MutableUncollect(rowType, input, withOrdinality);
    }
  
    @Override public boolean equals(@Nullable Object obj) {
      return obj == this
          || obj instanceof MutableUncollect
          && withOrdinality == ((MutableUncollect) obj).withOrdinality
          && input.equals(((MutableUncollect) obj).input);
    }
  
    @Override public int hashCode() {
      return Objects.hash(input, withOrdinality);
    }
  
    @Override public StringBuilder digest(StringBuilder buf) {
      return buf.append("Uncollect(withOrdinality: ")
          .append(withOrdinality).append(")");
    }
  
    @Override public MutableRel clone() {
      return MutableUncollect.of(rowType, input.clone(), withOrdinality);
    }
  }
  