Tobia Conforto pisze: > [EMAIL PROTECTED] wrote: >> XSLT Extensions assist formatting. Data collection belongs in the XML >> generation phase. Using XSLT Extensions to generate data is a very >> bad practice. What are the requirements? > > Let me explain better. > > I need to translate URIs in a XML document, in the middle of a pipeline, > fetching relevant information from a SQL database. "In the middle of a > pipeline" means that there are various other steps before it, so I > cannot fetch this SQL data in the initial generator. > > At first I tried to have a sub-pipeline do the job, using the document() > XPath function with a cocoon: schema, but it was too slow. > > My next (and current) idea is transforming the XML with XSLT, while > coding the actual URI transformations (including the SQL queries) as a > Java extension function, to be called from XSLT where appropriate. > > I'm hitting a wall, because I need a DataSourceComponent to be able to > make SQL queries, but a Java XSLT extension class doesn't have any > access to Cocoon's object model (that I can see.) > > I cannot pass the DataSourceComponent, or any other interesting object, > from the sitemap to my extension function, passing through the XSLT as a > parameter, because XSLT parameters get passed from the sitemap as strings. > > Suggestions are welcome. > > My last resort is doing everything as a custom transformer, but I'd like > to avoid it, as I'm not too keen on coding in Sax what can easily be > dealt with in XSLT (changing a bunch of attribute values.) Although it > wouldn't be too hard with Sax either...
I'm not sure if it's going to fit in your case but I would suggest to take a look at Cocoon's quite powerful LinkRewriterTransformer[1]. Basically all you would need to do is to implement your own input module (quite simple task) and configure transformer so it uses your own input module. I strongly agree that using extension functions in your case that access external that is *NOT* a good idea. [1] http://cocoon.apache.org/2.1/apidocs/org/apache/cocoon/transformation/LinkRewriterTransformer.html -- Grzegorz Kossakowski Committer and PMC Member of Apache Cocoon http://reflectingonthevicissitudes.wordpress.com/ --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
