Will, Thanks a lot for your reply. It was useful.
-Indrajit On Fri, 16 Feb 2007 Will Sappington wrote : > >Indrajit Bhattacharya wrote > >Hi Dave, > > > >Thanks a lot for your reply. > > > >>>We store all our data as xerces DOM in our application. Is there any > >>>problem using these xercesc::DOMNode* data with Xalan for XPath and > >>>XSLT ? > >>> > >> > >>That depends on what you mean by "problem..." > > > >Here my intension is: given a xercesc::DOMNode* pointer, we need to >perform > >XPath expression evaluation, the expression being taken from user of >the > >application. Do you see any issue in this use model ? > > > >Thanka again, > >-Indrajit > >You might want to try reading the FAQ, it has a topic that deals >specifically with Xerces DOM's and Xalan. Here is what it says (the >HTML documentation has embedded links to related topics): > >Should I be using the Xerces DOM or Xalan DOM? > >The Xalan DOM implementation is highly optimised for transformations. >However, whilst you can build documents in the Xalan DOM, subsequent >modification will not work. The Xalan DOM is designed to be either an >input or an output from a transformation, not as a general DOM >implementation. > >So in cases where you want to simply transform documents using Xalan, >using the internal DOM implementation is the best approach. > >In cases where you want to modify the DOM document on the fly, you >should use the Xerces DOM as the base document. You can wrap the Xerces >DOM in a wrapper (see passing in a Xerces DOM) to then use as an input >to a Xalan transformation. Alternatively you can output the result of a >transformation to a Xerces DOM document (see working with DOM input and >output). In either case, the Xerces document can be freely modified. >However, after you modify the document, you need to re-build the wrapper >so that any changes are replicated in the Xalan wrappers. > >If that doesn't help you, perhaps a search through the archives may also >yield some useful information while you await our responses. > >I don't know whether XPath evaluation will work on a Xerces DOM or not. >I'm implementing an XPath solution but I'm using the Xalan DOM. > >-will
