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Subject: Re: Path Constrained queries
Date: Wed, 26 Mar 2008 14:51:51 +0100
References: <000801c88f05$1e6827d0$6501a8c0@MeBigFatGuy>
From: Alexander Klimetschek <aklimets@day.com>

The normal solution would be - as you already noted - to start the  
xpath query with baseNode.getPath(). You are right that resolving the  
parent path is not needed in the overall use case "search below a  
given node", but it shouldn't be a performance killer, since the path  
to the root normally consists of only a handful nodes. Or do you see a  
performance issue in your environment?

Regards,
Alex


Am 26.03.2008 um 06:49 schrieb Dave Brosius:
> I am interested in doing descendant based patch constrained queries.
>
>
> I read section "6.6.3.4 Path Constraint", and infer that in order to  
> specify path constraints, you must know the full path to the node at  
> which you are constraining. These seems odd to me. Why doesn't jcr  
> follow the pattern set by xpath, that being the availability of  
> relative and absolute xpaths (queries).
>
>
> Why doesn't the query object have a
>
>
> query.setContextNode(node), which specifies from which node the  
> query begins?
>
>
>
> How does one determing the absolute path of a node that you have  
> retreived by uuid? Do we really need to do a recursive getParent  
> search to the root? Or, do i really need to store the absolute path  
> of each node in a node property? This seems really painful. I see  
> the property jcr:path, but this is apparently only a pseudo property  
> available only from within the query itself.
>
>
> So the question is how do people do a descendent path constraining  
> query when you want to start the search at any arbitrary node that  
> is retrieved by UUID?

--
Alexander Klimetschek
alexander.klimetschek@day.com