I'm hoping someone can offer some insight into the FunctionQuery. I've just
discovered this, and I think it's exactly what I've been looking for, but I'm
having some trouble getting it to work. I can create and execute the query, but
if I try to see the Explanation, I get an
java.lang.UnsupportedOperationException . Can someone show me where I'm going
wrong?
Query query = parser.parse(newCriteria);
LinearFloatFunction lff = new LinearFloatFunction(new
IntFieldSource("num"), 1.0f, 1.0f);
FunctionQuery fQ = new FunctionQuery(lff);
BooleanQuery bQ = new BooleanQuery();
bQ.add(query, BooleanClause.Occur.MUST);
bQ.add(fQ, BooleanClause.Occur.SHOULD);
I'm using the FunctionQuery with a Query in a BooleanQuery, based on some
information I found on this list. However, here's where I run into trouble:
//there's code here that executes the query and does other exciting things
ms.explain(bQ, hit.getId());
The ms is a MultiSearcher. I read that java.lang.UnsupportedOperationException
is usually a result of a query not being in it's rewritten form. Is that my
problem here? Any help you could offer would be greatly appreciated.
Thanks,
Ann
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