Questions about XPath buildins

 

Hello,

 

I have the following concerns about the list of buildins that may be
included in RIF core.

*         Could it be possible to limit to functions with an easy
implementation in main language? For example, the match function may be
tricky to implement in a language where there is no libraries concerning
regexp,

*         Up-to-now, I have not the time to check that the selected
functions could be quickly implemented in Java, especially for the date
types. Is it possible to have more time to perform this task?

*         Those functions are perfect to operate against an XML model.
However, most of our PR ruleset are not compliant with such a model
since they use methods coming from Java libraries or user's libraries. I
don't think we will be able to bind those methods and data on XML and
XPath functions. Furthermore, even if it exists very similar methods in
the Java library, some of them have a slightly different semantic. Take
for example the '+' operator of Java which differs with 'op:numeric-add'
from the way the overflow is processed.

 

Regards. Philippe.