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.dialect.oracle.ast.clause;
  
  import com.alibaba.druid.sql.ast.expr.SQLIdentifierExpr;
  import com.alibaba.druid.sql.ast.statement.SQLSelectOrderByItem;
  import com.alibaba.druid.sql.dialect.oracle.ast.OracleSQLObjectImpl;
  import com.alibaba.druid.sql.dialect.oracle.visitor.OracleASTVisitor;
  
  import java.util.ArrayList;
  import java.util.List;
  
  public class SearchClause extends OracleSQLObjectImpl {
      public static enum Type {
          DEPTH, BREADTH
      }
  
      private Type type;
  
      private final List<SQLSelectOrderByItem> items = new ArrayList<SQLSelectOrderByItem>();
  
      private SQLIdentifierExpr orderingColumn;
  
      public Type getType() {
          return type;
      }
  
      public void setType(Type type) {
          this.type = type;
      }
  
      public List<SQLSelectOrderByItem> getItems() {
          return items;
      }
  
      public void addItem(SQLSelectOrderByItem item) {
          if (item != null) {
              item.setParent(this);
          }
          this.items.add(item);
      }
  
      public SQLIdentifierExpr getOrderingColumn() {
          return orderingColumn;
      }
  
      public void setOrderingColumn(SQLIdentifierExpr orderingColumn) {
          if (orderingColumn != null) {
              orderingColumn.setParent(this);
          }
          this.orderingColumn = orderingColumn;
      }
  
      @Override
      public void accept0(OracleASTVisitor visitor) {
          if (visitor.visit(this)) {
              acceptChild(visitor, items);
              acceptChild(visitor, orderingColumn);
          }
          visitor.endVisit(this);
      }
  
      public SearchClause clone() {
          SearchClause x = new SearchClause();
  
          x.type = type;
  
          for (SQLSelectOrderByItem item : items) {
              SQLSelectOrderByItem item2 = item.clone();
              item2.setParent(x);
              x.items.add(item2);
          }
  
          if (orderingColumn != null) {
              x.setOrderingColumn(orderingColumn.clone());
          }
  
          return x;
      }
  }
  