Alternatively, add a dummy field-value to all documents, like
doc.add(Field.Keyword("foo", "bar"))
Waste of space, but allows you to perform negated queries.
On Thu, 03 Feb 2005 19:19:15 +0100, Maik Schreiber wrote:
>> Negating a term must be combined with at least one nonnegated
>> term to return documents; in other words, it isn't possible to
>> use a query like NOT term to find all documents that don't
>> contain a term.
>>
>> So does that mean the above example wouldn't work?
>>
> Exactly. You cannot search for "-kcfileupload:jpg", you need at
> least one clause that actually _includes_ documents.
>
> Do you by chance have a field with known contents? If so, you could
> misuse that one and include it in your query (perhaps by doing
> range or wildcard/prefix search). If not, try IndexReader.terms()
> for building a Query yourself, then use that one for search.
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