Extracting a sub-tree as text using xpath

[Ori Doolman]

Dear friends,

I'm using Xalan 1.1 for extracting text from my xml using xpath
expression.

I would like to know how I can extract a whole sub-tree as text.

Until now, I had documents that look something like this:

 

<A>

            <B> my_data </B>

</A>

 

And I used the expression "/A/B/text()" in order to extract the text
"my_data".

 

Now, I need to extract several nodes (not text nodes) as text. For
example:

 

<A>

            <B> 

                        <C> my_data</C>

                        <D> my_other_data </D>

</B>

</A>

 

I would like an expression that extracts all the <B> sub-tree as text:

"<B><C>my_data</C><D> my_other_data </D></B>"

 

I think it has something to do with the "string()" function, but I'm not
sure how to use it.

 

 

Thank you,

Ori Doolman,