[xml] save a part of the tree maitaining the hierarchy from root.

["Senthil Nathan" <rsennat gmail com>]

Hi All,

I would like to know how to save a part of a DOM tree, by maintaining the

hierarchy from the root based on an attribute/tag.

 

Suppose orig.xml is as below,

<Root>

    <Parent>

         <Child1 Apply="1">

              <Value>100</Value>

         <Child2>

               <Value>0</Value>

     </Parent>

</Root>

 

I need to save only the nodes which has the flag "Apply" (which means that

the node's value is changed), along with the complete hierarchy in another xml file.

 

new.xml would be as,

<Root>

    <Parent>

         <Child1 Apply="1">

              <Value>100</Value>

     </Parent>

</Root>

 

Just I used a simple example here. Actually the original xml file will be

a large file.

 

After identifying the nodes needed using XPATH, I tried using the

xmlElemDump( ), xmlDocCopyNodeList( )  which gets only the sub tree, not with the hierarchy.  Unlinking the nodes also did not work out, as its a large file. So, please let me know, is there any libxml-tree or save api's? or how can i get this?

 

Thanks

Senthil