content: /*
   * Copyright 1999-2012 Alibaba Group.
   *  
   * Licensed 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.
   */
  /**
   * (created at 2011-7-31)
   */
  package com.alibaba.cobar.parser.ast.stmt.dml;
  
  import java.util.List;
  
  import com.alibaba.cobar.parser.ast.expression.misc.QueryExpression;
  import com.alibaba.cobar.parser.ast.expression.primary.Identifier;
  import com.alibaba.cobar.parser.ast.expression.primary.RowExpression;
  
  /**
   * @author <a href="mailto:shuo.qius@alibaba-inc.com">QIU Shuo</a>
   */
  public abstract class DMLInsertReplaceStatement extends DMLStatement {
      protected final Identifier table;
      protected final List<Identifier> columnNameList;
      protected List<RowExpression> rowList;
      protected final QueryExpression select;
  
      @SuppressWarnings("unchecked")
      public DMLInsertReplaceStatement(Identifier table, List<Identifier> columnNameList, List<RowExpression> rowList) {
          this.table = table;
          this.columnNameList = ensureListType(columnNameList);
          this.rowList = ensureListType(rowList);
          this.select = null;
      }
  
      @SuppressWarnings("unchecked")
      public DMLInsertReplaceStatement(Identifier table, List<Identifier> columnNameList, QueryExpression select) {
          if (select == null)
              throw new IllegalArgumentException("argument 'select' is empty");
          this.select = select;
          this.table = table;
          this.columnNameList = ensureListType(columnNameList);
          this.rowList = null;
      }
  
      public Identifier getTable() {
          return table;
      }
  
      /**
       * @return {@link java.util.ArrayList ArrayList}
       */
      public List<Identifier> getColumnNameList() {
          return columnNameList;
      }
  
      /**
       * @return {@link java.util.ArrayList ArrayList} or
       *         {@link java.util.Collections#emptyList() EMPTY_LIST}
       */
      public List<RowExpression> getRowList() {
          return rowList;
      }
  
      public QueryExpression getSelect() {
          return select;
      }
  
      private List<RowExpression> rowListBak;
  
      public void setReplaceRowList(List<RowExpression> list) {
          rowListBak = rowList;
          rowList = list;
      }
  
      public void clearReplaceRowList() {
          if (rowListBak != null) {
              rowList = rowListBak;
              rowListBak = null;
          }
      }
  
  }
  