Groovy 动态修改XML

我现在grails+groovy，用Groovy 生成 Flex tree 功能树需要的XML文件，里面用到了递归，可以无限级。下现有二个类：一个是对象TabFunction,这就是我的功能表影射出的对象，Test3是生成XML的测试类。(附件中有:groovy语方法文档。)
package ce.bean

class TabFunction {
    String cCode;                          
    String cName;                          
    String cDescription;                 
    String cParentCode;                   
    Date dCreate=new Date();              
    String cState;                        
    String cGrade                        
    static mapping ={
          version false;
    }
    static constraints = {
     
    }
}



package com

import groovy.xml.StreamingMarkupBuilder
import ce.bean.TabFunction

/**
* Created by IntelliJ IDEA.
* User: mxl
* Date: 2010-3-16
* Time: 15:58:22
* To change this template use File | Settings | File Templates.
*/
class Test3 {


    def str="<funlist></funlist>";
   def void roolMothed(){
      def obj= new TabFunction(cCode:"TOP_SysUserManager",cName:"基础信息维护",cDescription:"系统注册信息管理",cState:"0",cGrade:1,cParentCode:"00");
     obj.id=2;
    def obj1= new TabFunction(cCode:"SYS_UserManager",cName:"用户信息管理",cDescription:"系统注册用户管理",cState:"0",cGrade:2,cParentCode:"TOP_SysUserManager");
     obj1.id=1;
    def obj2=  new TabFunction(cCode:"TOP_SystemManager",cName:"系统信息维护",cDescription:"系统注册信息管理",cState:"0",cGrade:1,cParentCode:"00");
     obj2.id=3;
    def obj3=  new TabFunction(cCode:"fff",cName:"系统信息维护",cDescription:"系统注册信息管理",cState:"0",cGrade:3,cParentCode:"SYS_UserManager");
     obj3.id=5;
         List list=new ArrayList();
     list<<obj1<<obj<<obj2<<obj3;

    println "LAST:::"+ testMethod(list,list,"00",str)

   }
  def String testMethod(all,list,parentCode,str){
        def temp = all.findAll {it.@cParentCode==parentCode};
        def root = new XmlSlurper().parseText(str)  ;
        def outputBuilder = new StreamingMarkupBuilder()
        def tempList=new ArrayList();
        String result="";
        if(parentCode.length()>0){
            temp.each {
                  def tempFun=it;
                  //def obj=root.sysfun.find {it.@cCode == parentCode };
                  root.appendNode{
                           sysfun(cCode:tempFun.cCode,cName:tempFun.cName);
                  }
                  def ll= all.findAll {it.@cParentCode==tempFun.cCode}
                  if (ll.size()>0) ll.each{ tempList<<it};
            }
          
         }else{

            list.each {
                def tempFun=it;
               // println tempFun.cParentCode+":::::"+tempFun.cCode;
                def obj=root.'**'.find{it.@cCode==tempFun.cParentCode};
                obj.appendNode{
                    sysfun(cCode:tempFun.cCode,cName:tempFun.cName);
                }
             
                def ll= all.findAll {it.@cParentCode==tempFun.cCode}
                if (ll.size()>0) ll.each{ tempList<<it};


            }

         }

         result = outputBuilder.bind{ mkp.yield root }
         if(tempList.size()>0)
         testMethod(all,tempList,"",result);
         else{
              return result;
         }
  }


    public static void main(def a){
    new Test3().roolMothed();

    }
}