content: /*
   * Copyright 1999-2017 Alibaba Group Holding Ltd.
   *
   * 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.
   */
  package com.alibaba.druid.sql.ast;
  
  import com.alibaba.druid.sql.visitor.SQLASTVisitor;
  
  public class SQLSubPartitionByHash extends SQLSubPartitionBy {
      protected SQLExpr expr;
  
      // for aliyun ads
      private boolean key;
  
      public SQLExpr getExpr() {
          return expr;
      }
  
      public void setExpr(SQLExpr expr) {
          if (expr != null) {
              expr.setParent(this);
          }
          this.expr = expr;
      }
  
      @Override
      protected void accept0(SQLASTVisitor visitor) {
          if (visitor.visit(this)) {
              acceptChild(visitor, expr);
              acceptChild(visitor, subPartitionsCount);
          }
          visitor.endVisit(this);
      }
  
      public boolean isKey() {
          return key;
      }
  
      public void setKey(boolean key) {
          this.key = key;
      }
  
      public SQLSubPartitionByHash clone() {
          SQLSubPartitionByHash x = new SQLSubPartitionByHash();
          if (expr != null) {
              x.setExpr(expr.clone());
          }
          x.key = key;
          return x;
      }
  
      public boolean isPartitionByColumn(long columnNameHashCode64) {
          return expr instanceof SQLName
                  && ((SQLName) expr).nameHashCode64() == columnNameHashCode64;
      }
  }
  