I've added a field to my index (Store.NO, Index.UN_TOKENIZED), I've updated a couple of my documents and I'm now sorting on it (after I collected document id's in a HitCollector). My search results in some documents that consist of document with the field and without.
I use a simple implementation of SortComparator which implements GetComparable by just returning the passed termtext.
I've set a breakpoint at my GetComparable method and I see the correct values (the method is NOT called for documents that don't have the field as a value).
When SortComparer.Compare is called, a NullReferenceException occurs in:
The expression this.cachedValues[i.doc] is null.
Is this a limitation of SortComparer (and its AnonymousClassScoreDocComparator) that all documents in a searchresult need to have a value for the field??