Carsten Ziegeler wrote: >And to add more complexity, we have a XMLizer! What's that? > >Now, as Sylvain explains a Source delivers data in any format >which might not be XML. To classify the format of the data, >mime-types are used, so a Source can return the mime-type >of the data, for example "text/html" etc. > >The XMLizer is a (guess what) configurable Avalon component >which knows how to convert some mime-types to XML, for example >it can convert "text/html" to XHTML (using jtidy). > >
Damn, I missed that one ! >The Cocoon SourceResolver checks (as Sylvain has explained) in >the toSAX(Source) method, if the Source is itself XMLizable, >which means if the Source can convert itself (or it's data) >to an XML representation). If this is not the case, the >XMLizer is used. It get's the mime-type from the source and >looks if it has a mapping for this mime-type to XML. If so >this mapping is used. >If the source does not return a mime-type, it's assumed that >the source already delivers XML and the XML parser is used >on the content. > >So, if you look at this scenario, there is actually no need >for special generators like the SWFGenerator mentioned below, >because the XMLizer could be extended by this conversion and >then the usual FileGenerator could be used as well. > > But this works only if the source is capable of determining the mime-type, which isn't always obvious (consider for example the BlobSource). >And now the final attack: >Nearly all generators could be rewritten as sources, for >example the RequestGenerator could be written as a "request:" >protocol. But does this make sense - I would say: "No". I >think a protocol makes sense if several, different sources >(documents, pieces of information) can be obtained using this >protocol. For example using an FTP protocol you can fetch >several files from the FTP server. >A request protocol for example addresses only one piece of >information, the request. > Agree. Moreover, writing a source makes sense only if the data it provides can be used for other purposes than a generator. An XSL stylesheet can be fetched from an FTP server, but I can hardly think of fetching a stylesheet from the request ! >Ok, can someone add more "confusion"? ;) > Maybe Jeremy could tell us that slash-edit allows to read stylesheets from the request ;) >And yes, Sylvain, this should really go in the docs! > > Ok. I'll assemble this in an xdoc. Sylvain -- Sylvain Wallez Anyware Technologies Apache Cocoon http://www.anyware-tech.com mailto:[EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, email: [EMAIL PROTECTED]
