现有xml格式如下：
<mx:XML id="xmlSource">
<node label="grandFather" state="unchecked">
<node label="Father" state="unchecked">
<node label="son" state="unchecked">
<node label="1001" state="unchecked">
<node label="100101" state="unchecked">
</node>
</node>
</node>
</node>
<node label="Uncle" state="unchecked">
<node label="son" state="unchecked">
<node label="1001" state="unchecked">
<node label="100101" state="unchecked">
&n
数据库表中有一列（TranXml）类型是xml，存储的是类似
<fathernode>
<a>aaa
</a>
<b>bbb
</b>
</fathernode>
的信息，并且通过查询方� ......
