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.asterix.lang.sqlpp.struct;
  
  import java.util.Objects;
  
  import org.apache.asterix.common.exceptions.CompilationException;
  import org.apache.asterix.lang.common.visitor.base.ILangVisitor;
  import org.apache.asterix.lang.sqlpp.clause.SelectBlock;
  import org.apache.asterix.lang.sqlpp.expression.SelectExpression;
  import org.apache.asterix.lang.sqlpp.visitor.base.ISqlppVisitor;
  
  public class SetOperationInput {
  
      private SelectBlock selectBlock;
      private SelectExpression subquery;
  
      public SetOperationInput(SelectBlock selectBlock, SelectExpression subquery) {
          this.selectBlock = selectBlock;
          this.subquery = subquery;
      }
  
      public SelectBlock getSelectBlock() {
          return selectBlock;
      }
  
      public void setSelectBlock(SelectBlock selectBlock) {
          this.selectBlock = selectBlock;
      }
  
      public SelectExpression getSubquery() {
          return subquery;
      }
  
      public void setSubquery(SelectExpression subquery) {
          this.subquery = subquery;
      }
  
      public boolean selectBlock() {
          return selectBlock != null;
      }
  
      public boolean subquery() {
          return subquery != null;
      }
  
      public <R, T> R accept(ILangVisitor<R, T> visitor, T arg) throws CompilationException {
          if (selectBlock != null) {
              return ((ISqlppVisitor<R, T>) visitor).visit(selectBlock, arg);
          } else {
              return ((ISqlppVisitor<R, T>) visitor).visit(subquery, arg);
          }
      }
  
      @Override
      public int hashCode() {
          return Objects.hash(selectBlock, subquery);
      }
  
      @Override
      public boolean equals(Object object) {
          if (this == object) {
              return true;
          }
          if (!(object instanceof SetOperationInput)) {
              return false;
          }
          SetOperationInput target = (SetOperationInput) object;
          return Objects.equals(selectBlock, target.selectBlock) && Objects.equals(subquery, target.subquery);
      }
  
      @Override
      public String toString() {
          return selectBlock.toString();
      }
  }
  