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.stmt;
  
  import com.alibaba.druid.sql.SQLUtils;
  import com.alibaba.druid.sql.ast.SQLName;
  import com.alibaba.druid.sql.ast.statement.SQLSelect;
  import com.alibaba.druid.sql.ast.statement.SQLSubqueryTableSource;
  import com.alibaba.druid.sql.dialect.oracle.visitor.OracleASTVisitor;
  import com.alibaba.druid.sql.visitor.SQLASTVisitor;
  
  public class OracleSelectSubqueryTableSource extends SQLSubqueryTableSource implements OracleSelectTableSource {
      public OracleSelectSubqueryTableSource() {
      }
  
      public OracleSelectSubqueryTableSource(String alias) {
          super(alias);
      }
  
      public OracleSelectSubqueryTableSource(SQLSelect select, String alias) {
          super(select, alias);
      }
  
      public OracleSelectSubqueryTableSource(SQLSelect select) {
          super(select);
      }
  
      @Override
      protected void accept0(SQLASTVisitor visitor) {
          this.accept0((OracleASTVisitor) visitor);
      }
  
      protected void accept0(OracleASTVisitor visitor) {
          if (visitor.visit(this)) {
              acceptChild(visitor, this.getHints());
              acceptChild(visitor, this.select);
              acceptChild(visitor, this.pivot);
              acceptChild(visitor, this.unpivot);
              acceptChild(visitor, this.flashback);
          }
          visitor.endVisit(this);
      }
  
      public String toString() {
          return SQLUtils.toOracleString(this);
      }
  
      public OracleSelectSubqueryTableSource clone() {
          OracleSelectSubqueryTableSource x = new OracleSelectSubqueryTableSource();
          cloneTo(x);
  
          if (pivot != null) {
              setParent(pivot.clone());
          }
  
          if (unpivot != null) {
              x.setUnpivot(unpivot.clone());
          }
  
          return x;
      }
  
      public void cloneTo(OracleSelectSubqueryTableSource x) {
          x.alias = alias;
  
          if (this.getPivot() != null) {
              x.setPivot(this.getPivot());
          }
  
          if (select != null) {
              x.select = select.clone();
              x.select.setParent(x);
          }
  
          for (SQLName column : columns) {
              SQLName c2 = column.clone();
              c2.setParent(x);
              x.columns.add(c2);
          }
      }
  }
  