Is it possible to filter based on parent node properties when executing an
XPath query (JR 1.6). Let me explain the scenario that I have.
We have a repository for all the books published by a press. Each book has
child nodes that identify the various formats it has been published in (cloth
bound, paperback, etc.) and are termed as distributions. All publication dates
are associated with the distributions, since the book really has no
publication date of its own. Each book may belong to an array of subjects, so
the subjects are stored as a multi-value property in the book node.
The structure is something along these lines
/books
/book
/A (alphabetical index as well as keep node count under control)
/bo<Database PK value> <-- represents each book
/distribution <- Container node for the various distributions
/di<Database PK value> <-- represents a published format of the book
Example path for a distribution is:
/books/book/T/bo5822950/distribution/di5822950
I need to generate RSS feeds of the new books (based on dates at the
distribution node) as well as subject specific RSS for new books. The XPath
query for the new books is as follows:
//*...@nodetype = 'di' and @date > xs:dateTime('2010-03-13T17:29:50.050Z') and
@date <= xs:dateTime('2010-05-13T17:29:50.050Z') and @binding !=
'ec0214db-8bb2-4f23-a925-341cd98196f7'] order by @date descending
Would it be possible in XPath to add some additional predicates to filter by
subject at the book node level? I can iterate over the results and filter on
parent.parent, but wondered if it is possible in the query.
Thanks in advance for all hints and suggestions.
Rakesh
