Re: [JXPath] attribute axis

[Dmitri Plotnikov <dm...@apache.org>]

Chris,

Could you elaborate on this requirement a little bit?  What is the need to
use the attribute axis rather than child axis with maps?

Thanks,

- Dmitri


----- Original Message ----- 
From: "Chris White" <ch...@comcast.net>
To: <co...@jakarta.apache.org>
Cc: "John Landers" <jc...@caredatasystems.com>
Sent: Monday, November 10, 2003 6:44 AM
Subject: [JXPath] attribute axis


> JXPath is a marvelous tool!
>
> We are using it in an open-source EAI project, OpenEDIX
> (openedi.sourceforge.net). OpenEDIX is tool that supports the description
> and transformation of a variety of message protocols, primarily protocols
> used in healthcare.
>
> We would like to create an enhancement that lets us create values on the
> attribute axis dynamically similar to the DynamicPropertyHandler
mechanism.
> I have downloaded the source and have been experimenting to determine what
> changes might be required to support this feature.
>
> I have found that if I make the following changes I start to get the
> behavior we're after.
>
> 1) DynamicPropertyPointer - added new field "axis", revised constructor to
> accept setting of this new field
> 2) DynamicPropertyHandler - added a new parameter, "axis" on every method.
> Modified all implementers of this interface
> 3) PropertyOwnerPointer.getPropertyPointer(int axis)  - added axis
parameter
> to abstract method.
>
> Only the SimplePathInterpreter is passing anything other than
> Compiler.CHILD_AXIS to getPropertyPointer. Nothing else appears to be
aware
> of the axis of each step. This makes me think that I might be barking up
the
> wrong tree.
>
> Do you have any recommendation for alternative approaches?
>
> Is this a feature that you think belongs in the base product or should we
> consider our work an alternate implementation?
>
> Chris White
> Parafora Software/Care Data Systems
> (734)930-1804
>
>
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