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Date: Wed, 17 Aug 2005 21:17:46 -0700
From: Brian Moseley <bcm@osafoundation.org>
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To: jackrabbit-dev@incubator.apache.org
Subject: Re: query problem
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well, i updated to the latest code, including the recent search changes, 
and things are even worse: the query seems to hang indefinitely, never 
returning.

for what's it worth, this query works as expected:

//element(*, caldav:resource)[@caldav:uid = '1']

Brian Moseley wrote:
> 
> is there anything wrong with the formulation of this xpath query statement?
> 
> /bcm/cal//element(*, caldav:resource)[@caldav:uid = 
> '59BC120D-E909-4A56-A70D-8E97914E51A3']
> 
> i'm trying to find all nodes of type "caldav:resource" underneath (but 
> not including) /bcm/cal where the "caldav:uid" property is the value 
> given in the query.
> 
> when i execute the query, i get the below exception. looks like i'm not 
> being successful in specifying a descendents-only query, but i can't 
> imagine that's what's causing the exception...
> 
> thanks!
> 
> java.lang.UnsupportedOperationException
>         at 
> org.apache.jackrabbit.core.query.lucene.CachingMultiReader$MultiTermDocs.skipTo(CachingMultiReader.java:281) 
> 
>         at org.apache.lucene.search.TermScorer.skipTo(TermScorer.java:88)
>         at 
> org.apache.lucene.search.ConjunctionScorer.doNext(ConjunctionScorer.java:53) 
> 
>         at 
> org.apache.lucene.search.ConjunctionScorer.next(ConjunctionScorer.java:48)
>         at org.apache.lucene.search.Scorer.score(Scorer.java:37)
>         at 
> org.apache.jackrabbit.core.query.lucene.ChildAxisQuery$ChildAxisScorer.calculateChildren(ChildAxisQuery.java:291) 
> 
>         at 
> org.apache.jackrabbit.core.query.lucene.ChildAxisQuery$ChildAxisScorer.next(ChildAxisQuery.java:251) 
> 
>         at org.apache.lucene.search.Scorer.score(Scorer.java:37)
>         at 
> org.apache.jackrabbit.core.query.lucene.DescendantSelfAxisQuery$DescendantSelfAxisScorer.calculateSubHits(DescendantSelfAxisQuery.java:302) 
> 
>         at 
> org.apache.jackrabbit.core.query.lucene.DescendantSelfAxisQuery$DescendantSelfAxisScorer.next(DescendantSelfAxisQuery.java:237) 
> 
>         at org.apache.lucene.search.Scorer.score(Scorer.java:37)
>         at 
> org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:92)
>         at org.apache.lucene.search.Hits.getMoreDocs(Hits.java:64)
>         at org.apache.lucene.search.Hits.<init>(Hits.java:43)
>         at org.apache.lucene.search.Searcher.search(Searcher.java:33)
>         at org.apache.lucene.search.Searcher.search(Searcher.java:27)
>         at 
> org.apache.jackrabbit.core.query.lucene.SearchIndex.executeQuery(SearchIndex.java:287) 
> 
>         at 
> org.apache.jackrabbit.core.query.lucene.QueryImpl.execute(QueryImpl.java:179) 
> 
>         at 
> org.apache.jackrabbit.core.query.QueryImpl.execute(QueryImpl.java:132)
> 
>