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.sql;
  
  import org.apache.calcite.sql.parser.SqlParserPos;
  
  /**
   * Base class for an DROP statements parse tree nodes. The portion of the
   * statement covered by this class is "DROP". Subclasses handle
   * whatever comes afterwards.
   */
  public abstract class SqlDrop extends SqlDdl {
  
    /** Whether "IF EXISTS" was specified. */
    public final boolean ifExists;
  
    /** Creates a SqlDrop. */
    protected SqlDrop(SqlOperator operator, SqlParserPos pos, boolean ifExists) {
      super(operator, pos);
      this.ifExists = ifExists;
    }
  
    @Deprecated // to be removed before 2.0
    protected SqlDrop(SqlParserPos pos) {
      this(DDL_OPERATOR, pos, false);
    }
  
  }
  