[xml] query - append DOM tree, identify leaf node

["Senthil Nathan" <rsennat gmail com>]

Hi,

I read through some of the basic API's for building the DOM tree using libxml2

and I understood the examples for tree and xpath, by executing the same.

 

I would like to learn to use the API's in my application accordingly.

(I'm rephrasing my question in the previous thread)

 

1. Suppose if I have a pointer xmlDoc *doc1 to a DOM tree, built using xmlReadFile( ) or xmlParseFile( ) for file1.xml.

    Is it possible to add another DOM tree to this existing tree?

    Like, if *doc2 points to another DOM tree of file2.xml, can this be appended to the *doc1.

 

2. Using xmlXPathEvalExpression( ), I could search for a tree structure exists in the DOM tree or not.

    But how do I find that is the leaf node.

   

    <node>

          <n1>a</n1>

                <n11>abc</n11>

          <n2>b</n2>

    </node>

    

     Here I can search for "//node//n1" or "//node//n1//n11" using the above api.

     But how to confirm the leaf node. Here the second search is the leaf node.

     Using this xmlXPathObjectPtr--->xmlNodeSetPtr--->xmlNodePtr--->xmlElementType,

     we can say is it an element, or an attribute or a text node. But how to identify it as a leaf node.

 

Thanks

Senthil