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.statement.SQLTableElement;
  import com.alibaba.druid.sql.visitor.SQLASTVisitor;
  
  import java.util.ArrayList;
  import java.util.List;
  
  public class SQLDeclareItem extends SQLObjectImpl implements SQLObjectWithDataType, SQLReplaceable {
      protected Type type;
  
      protected SQLName name;
  
      protected SQLDataType dataType;
  
      protected SQLExpr value;
  
      protected List<SQLTableElement> tableElementList = new ArrayList<SQLTableElement>();
  
      protected transient SQLObject resolvedObject;
  
      public SQLDeclareItem() {
      }
  
      public SQLDeclareItem(SQLName name, SQLDataType dataType) {
          this.setName(name);
          this.setDataType(dataType);
      }
  
      public SQLDeclareItem(SQLName name, SQLDataType dataType, SQLExpr value) {
          this.setName(name);
          this.setDataType(dataType);
          this.setValue(value);
      }
  
      public boolean replace(SQLExpr expr, SQLExpr target) {
          if (name == expr) {
              setName((SQLName) target);
              return true;
          }
  
          if (value == expr) {
              setValue(target);
              return true;
          }
  
          return false;
      }
  
      @Override
      protected void accept0(SQLASTVisitor visitor) {
          if (visitor.visit(this)) {
              acceptChild(visitor, this.name);
              acceptChild(visitor, this.dataType);
              acceptChild(visitor, this.value);
              acceptChild(visitor, this.tableElementList);
          }
          visitor.endVisit(this);
      }
  
      public SQLName getName() {
          return name;
      }
  
      public void setName(SQLName name) {
          if (name != null) {
              name.setParent(this);
          }
          this.name = name;
      }
  
      public SQLDataType getDataType() {
          return dataType;
      }
  
      public void setDataType(SQLDataType dataType) {
          if (dataType != null) {
              dataType.setParent(this);
          }
          this.dataType = dataType;
      }
  
      public SQLExpr getValue() {
          return value;
      }
  
      public void setValue(SQLExpr value) {
          if (value != null) {
              value.setParent(this);
          }
          this.value = value;
      }
  
      public List<SQLTableElement> getTableElementList() {
          return tableElementList;
      }
  
      public void setTableElementList(List<SQLTableElement> tableElementList) {
          this.tableElementList = tableElementList;
      }
  
      public enum Type {
          TABLE, LOCAL, CURSOR;
      }
  
      public Type getType() {
          return type;
      }
  
      public void setType(Type type) {
          this.type = type;
      }
  
      public SQLObject getResolvedObject() {
          return resolvedObject;
      }
  
      public void setResolvedObject(SQLObject resolvedObject) {
          this.resolvedObject = resolvedObject;
      }
  }
  