Uwe Schindler wrote:
If you want to have all results, you do something wrong. :-)
Full text engines like lucene are made for returning only top-ranking
results. So if you use TopDocs results you must know before how many TopDocs
you want to have. Internally Lucene works with PriorityQueues that filter
the top ranking results.
If you want to have all results, you should not sort them by ranking, which
is not needed then). In this case, implement an own Collector and collect
the results for yourself into e.g. ArrayLists and so on (but they are
unsorted then).
Another possibility (if you really need the docs in relevance order) is to
run the search 2 times:
First only collect the top n=100 results. The TopDocs instance also returns
the max results. Using that number you can re-run the query to get all
ranked results - but this is generally a bad approach, because PQs get
slower for too many results, where order is not relevant.
Yes thats all fine and is my long term approach, but isn't there a bug
here, (in the case that is failing there is only one actual result ),
you haven't really addressed why I am geting this exception
Paul
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