Re: [Xpipe-users] Starting with XPipe

[Sean M. <sea...@pr...>]

At 10:47 13/10/2003 +0100, Sergey Beryozkin wrote:
>Sean,
>
>Thanks for your answer,
>What handler types can be used by XComponents ?  I mean is it an XSLT
>transformation and Java class instances only ? Are Jython scripts allowed ?

Java, Jython + XSLT + Exec (which is anything else).

>Actually, I've just looked at xcomponent.rng, and I see 4 types : Java,
>XSLT, EXEC and Jython.

Yes.

>Can you please explain me about "pre" and "post". Schema says it could be
>Java class, Jython, XSD, RNG or DTD. Are 'pre'  and 'post' used for input
>and output validation ?

Yes. Ideas from "design by contract" to allow you to be sure that input XML 
meets some input predicate and be sure that the output matches an output 
predicate.

>Another question : what is XRing ? Is it a process manager which allows to
>build complex XPipes structures?

XRig is just an idea at the moment. The idea is to provide a way of hooking 
up a collection of linear workflows (pipes) to do things that require more 
complex flows of control e.g. branching, looping etc.

Sean