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.ast.expr.SQLIdentifierExpr;
  import com.alibaba.druid.sql.visitor.SQLASTVisitor;
  
  import java.util.ArrayList;
  import java.util.List;
  
  public class SQLSubPartitionByRange extends SQLSubPartitionBy {
      private List<SQLExpr> columns = new ArrayList<SQLExpr>();
  
      public List<SQLExpr> getColumns() {
          return columns;
      }
  
      @Override
      protected void accept0(SQLASTVisitor v) {
          if (v.visit(this)) {
              acceptChild(v, columns);
              acceptChild(v, subPartitionsCount);
          }
          v.endVisit(this);
      }
  
      public SQLSubPartitionByRange clone() {
          SQLSubPartitionByRange x = new SQLSubPartitionByRange();
  
          for (SQLExpr column : columns) {
              SQLExpr c2 = column.clone();
              c2.setParent(x);
              x.columns.add(c2);
          }
  
          return x;
      }
  
      public boolean isPartitionByColumn(long columnNameHashCode64) {
          for (SQLExpr column : columns) {
              if (column instanceof SQLIdentifierExpr
                      && ((SQLIdentifierExpr) column).nameHashCode64() == columnNameHashCode64) {
                  return true;
              }
          }
          return false;
      }
  }
  