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Date: Mon, 18 Aug 2008 19:44:03 +0200
From: Harald Finster <hfinster@gmx.de>
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Subject: Re: [JXPATH] getting Containers in iteration (additional info)
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Dear Matt,
dear list-members,

thank you very much for your kind reply.

Matt Benson wrote:

> Remember that JXPath more or less exposes the Java
> object graph as an XML document, so the rules it uses
> to do so may seem somewhat arbitrary. 

yes, that's clear.
I had (little) hope, that this arbitrariness might be
configurable in some way, but I am certainly asking too much.
(And I don't want to belittle the value of jxpath in any way,
it is a great tool.)

> There are some
> comments at
> https://issues.apache.org/jira/browse/JXPATH-86
> relating to the idea of reading the list property
> directly. 

Thank you for this. The article makes the point
very clear.

> With regard to maps,
> the decision was made "in the beginning" to implement
> JXPath such that Maps are exposed as bare objects;
> note that a Map is not a collection.  Consider that
> unless a Map's keys are Strings there is no guarantee
> that a reasonable path step could be interpolated for
> a given Map entry; this is probably the most direct
> reason I could speculate for the decision not to
> handle Maps in any special way in JXPath.
> 

sounds absolutely plausible - yes.

>>> asking dump questions. (At least I had a look at

"dump" I should learn to write English ;-)


Bottom line: I will write some kind of 'post-processing'.

Again, thanks for your enlightening comments.

Harald

-- 
Dr.-Ing. Harald Finster / Aachen Germany
http://www.finster-stahlart.de industrial history and architecture
http://www.astrid-aix.de       gallery: watercolours and oil paintings

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