On Jul 9, 2008, at 10:14 PM, Chris Hostetter wrote:
I'm going to guess you have a doc where that field doesn't have a
value.
ordinarily that's fine, but maybe SortComparator doesn't handle
that case very well.
But how does the built-in STRING sort work with null values then? And
how do I make a SortComparitor that works?
what's the full stack trace look like?
See below.
- Paul
java.lang.NullPointerException
at org.apache.lucene.search.SortComparator
$1.compare(SortComparator.java:54)
at
org
.apache
.lucene.search.FieldSortedHitQueue.lessThan(FieldSortedHitQueue.java:
125)
at org.apache.lucene.util.PriorityQueue.upHeap(PriorityQueue.java:139)
at org.apache.lucene.util.PriorityQueue.put(PriorityQueue.java:53)
at
org
.apache
.lucene.util.PriorityQueue.insertWithOverflow(PriorityQueue.java:78)
at
org
.apache
.lucene
.search
.FieldSortedHitQueue.insertWithOverflow(FieldSortedHitQueue.java:108)
at
org
.apache
.lucene.search.TopFieldDocCollector.collect(TopFieldDocCollector.java:
61)
at org.apache.lucene.search.TermScorer.score(TermScorer.java:76)
at org.apache.lucene.search.TermScorer.score(TermScorer.java:61)
at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:
146)
at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:
124)
at org.apache.lucene.search.Hits.getMoreDocs(Hits.java:100)
at org.apache.lucene.search.Hits.<init>(Hits.java:77)
at org.apache.lucene.search.Searcher.search(Searcher.java:55)
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