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.expr;
  
  import com.alibaba.druid.sql.ast.*;
  import com.alibaba.druid.sql.dialect.oracle.visitor.OracleASTVisitor;
  import com.alibaba.druid.sql.visitor.SQLASTVisitor;
  
  import java.util.ArrayList;
  import java.util.List;
  
  public class OracleAnalytic extends SQLOver implements SQLReplaceable, OracleExpr {
      private OracleAnalyticWindowing windowing;
  
      public OracleAnalytic() {
      }
  
      @Override
      protected void accept0(SQLASTVisitor visitor) {
          if (visitor instanceof OracleASTVisitor) {
              accept0((OracleASTVisitor) visitor);
              return;
          }
          if (visitor.visit(this)) {
              acceptChild(visitor, this.partitionBy);
              acceptChild(visitor, this.orderBy);
              acceptChild(visitor, this.windowing);
          }
          visitor.endVisit(this);
      }
  
      public void accept0(OracleASTVisitor visitor) {
          if (visitor.visit(this)) {
              acceptChild(visitor, this.partitionBy);
              acceptChild(visitor, this.orderBy);
              acceptChild(visitor, this.windowing);
          }
          visitor.endVisit(this);
      }
  
      @Override
      public List<SQLObject> getChildren() {
          List<SQLObject> children = new ArrayList<SQLObject>();
          children.addAll(this.partitionBy);
          if (this.orderBy != null) {
              children.add(orderBy);
          }
          if (this.windowing != null) {
              children.add(windowing);
          }
          return children;
      }
  
      public OracleAnalyticWindowing getWindowing() {
          return this.windowing;
      }
  
      public OracleAnalytic clone() {
          OracleAnalytic x = new OracleAnalytic();
  
          cloneTo(x);
  
          if (windowing != null) {
              x.setWindowing(windowing.clone());
          }
  
          return x;
      }
  
      public void setWindowing(OracleAnalyticWindowing x) {
          if (x != null) {
              x.setParent(this);
          }
          this.windowing = x;
      }
  
      public SQLDataType computeDataType() {
          return null;
      }
  
      @Override
      public boolean replace(SQLExpr expr, SQLExpr target) {
          for (int i = 0; i < partitionBy.size(); i++) {
              if (partitionBy.get(i) == expr) {
                  partitionBy.set(i, target);
                  return true;
              }
          }
  
          return false;
      }
  }
  