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.SQLExpr;
  import com.alibaba.druid.sql.ast.SQLReplaceable;
  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 OracleReturningClause extends OracleSQLObjectImpl implements SQLReplaceable {
      private List<SQLExpr> items = new ArrayList<SQLExpr>();
      private List<SQLExpr> values = new ArrayList<SQLExpr>();
  
      public List<SQLExpr> getItems() {
          return items;
      }
  
      public void addItem(SQLExpr item) {
          if (item != null) {
              item.setParent(this);
          }
          this.items.add(item);
      }
  
      public List<SQLExpr> getValues() {
          return values;
      }
  
      public void addValue(SQLExpr value) {
          if (value != null) {
              value.setParent(this);
          }
          this.values.add(value);
      }
  
      @Override
      public void accept0(OracleASTVisitor visitor) {
          if (visitor.visit(this)) {
              acceptChild(visitor, items);
              acceptChild(visitor, values);
          }
          visitor.endVisit(this);
      }
  
      @Override
      public OracleReturningClause clone() {
          OracleReturningClause x = new OracleReturningClause();
  
          for (SQLExpr item : items) {
              SQLExpr item2 = item.clone();
              item2.setParent(x);
              x.items.add(item2);
          }
  
          for (SQLExpr v : values) {
              SQLExpr v2 = v.clone();
              v2.setParent(x);
              x.values.add(v2);
          }
  
          return x;
      }
  
      @Override
      public boolean replace(SQLExpr expr, SQLExpr target) {
          for (int i = items.size() - 1; i >= 0; i--) {
              if (items.get(i) == expr) {
                  target.setParent(this);
                  items.set(i, target);
                  return true;
              }
          }
  
          for (int i = values.size() - 1; i >= 0; i--) {
              if (values.get(i) == expr) {
                  target.setParent(this);
                  values.set(i, target);
                  return true;
              }
          }
  
          return false;
      }
  }
  