Score 0

Make a list of the docid for all the non-deleted documents in the index.
Collect the docids from the search-result. Subtract the two lists.

You can get the non-deleted docids by iterating from 0 to maxDoc()-1
(from IndexReader) and using the IndexReaders isDeleted(docid).


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Thank for answer.
For take docid of all document in the index I need to write a class
that implement indexReader or there is an other method ?

paolo


2008/6/25 Toke Eskildsen <te@statsbiblioteket.dk>:

MatchAllDocsQuery does it.

-Yonik

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Something along the following should work and be quite fast. However, it
might be overly complex.

// Do this every time the index is updated
IndexReader reader = IndexReader.open(indexLocation);
BitSet deleted = new BitSet(reader.maxDoc());
for (int i = 0 ; i < reader.maxDoc() ; i++) {
if (reader.isDeleted(i)) {
deleted.set(i);
}
}
QueryParser parser =
new QueryParser("freetext", new StandardAnalyzer());

// Do this for every search
Query query = parser.parse("java");
QueryWrapperFilter filter = new QueryWrapperFilter(query);
BitSet workset = filter.bits(reader);
workset.or(deleted);
// workset now marks all docids that are either matching or deleted
System.out.print("Non-matching documents: ");
for (int i = 0 ; i < reader.maxDoc() ; i++) {
if (!workset.get(i)) {
System.out.print(i + " ");
}
}



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