XPath: multiple condition on child node

[Andrea Polci <an...@exmachina.ch>]

Actually I have a query similar to this one:
/jcr:root//element(*,exm:document)[exm:feature/@exm:prop1='value1' and
exm:feature/@exmp:prop2 = 'value2']

The problem is that a "exm:document" node can have multiple
"exm:feature" childs and the two conditions can match different
childs.

For example I don't want the query to match a document like this:

document/feature1/prop1='value1'
document/feature1/prop2='xxxx'
document/feature2/prop1='yyyy'
document/feature2/prop2='value2'

while I want to match this one:


document/feature1/prop1='value1'
document/feature1/prop2='value2'
document/feature2/prop1='xxxx'
document/feature2/prop2='yyyy'

Is there a way to obtain this?

Thanks,
Andrea Polci

Re: XPath: multiple condition on child node

[Ard Schrijvers <a....@onehippo.com>]

I don't think it is possible to query in jackrabbit the you want. You
might want to change your content model for it.

Also, to emphasize the complexity of what you want: Lucene has a
bleeding edge feature improvement planned for the 4.x, called
NestedDocumentQuery, see
https://issues.apache.org/jira/browse/LUCENE-2454

This explains the complexity behind what you want. Also take a look at
the presentation link in the issue regarding cross-matching. Quite
enlightening by the way.

Regards Ard

On Mon, Mar 7, 2011 at 10:18 AM, Andrea Polci <an...@exmachina.ch> wrote:
> Actually I have a query similar to this one:
> /jcr:root//element(*,exm:document)[exm:feature/@exm:prop1='value1' and
> exm:feature/@exmp:prop2 = 'value2']
>
> The problem is that a "exm:document" node can have multiple
> "exm:feature" childs and the two conditions can match different
> childs.
>
> For example I don't want the query to match a document like this:
>
> document/feature1/prop1='value1'
> document/feature1/prop2='xxxx'
> document/feature2/prop1='yyyy'
> document/feature2/prop2='value2'
>
> while I want to match this one:
>
>
> document/feature1/prop1='value1'
> document/feature1/prop2='value2'
> document/feature2/prop1='xxxx'
> document/feature2/prop2='yyyy'
>
> Is there a way to obtain this?
>
> Thanks,
> Andrea Polci
>



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