[JXPath] extend JXPath

[pi...@netcourrier.com]

Hi,

We'd like to extend JXPath to navigate through our objects. Basically, we need to redefine how to process each token, but we want to keep the benefits of predicates handling, etc...
Is there a best way to achieve this...? We were thinking of 2 solutions :
- creating specific functions and try to call them successively in our path.
- implement interface DynamicPropertyHandler and define our behaviour in getProperty method.
Does anybody know which is the best way, or is there another solution ?
Also, we would like to know if it's possible to define some custom prefixes like in "/child::AAA" in xpath.

Thanks a lot,
pikepoke.

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Re: [JXPath] extend JXPath

[Dmitri Plotnikov <dp...@yahoo.com>]

pikepoke,


--- pikepoke@netcourrier.com wrote:
> Hi,
> 
> We'd like to extend JXPath to navigate through our objects.
> Basically, we need to redefine how to process each token, but we want
> to keep the benefits of predicates handling, etc...
> Is there a best way to achieve this...? We were thinking of 2
> solutions :
> - creating specific functions and try to call them successively in
> our path.
> - implement interface DynamicPropertyHandler and define our behaviour
> in getProperty method.

If you can achieve your goal by implementing DynamicPropertyHandler,
that's the way to go - there is nothing easier.  Let me know if you run
into problems with this approach.

> Does anybody know which is the best way, or is there another solution
> ?
> Also, we would like to know if it's possible to define some custom
> prefixes like in "/child::AAA" in xpath.
Unfortunately, that is not possible without breaking the XPath
standard. The prefixes defined by the standard are hardcoded in the
implementation of JXPath, so extending that list would technically also
be a challenge.

> 
> Thanks a lot,
> pikepoke.

Regards,

- Dmitri Plotnikov
dmitri@apache.org

> 
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