iamaslamok at yahoo
Aug 18, 2006, 12:28 AM
Post #5 of 6
(1205 views)
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Hi soren,
Thanks a lot for help.
As you suggest me, i written the code, but i wonder Field does not contain Store, Index YES etc. It only contains Field.Keyword, Field.Text etc. Am i missing something. My Code is as Below.
indexWriter = new IndexWriter(indexpath, analyzer, false);
// Create document
Document doc = new Document();
doc.add(Field.Keyword(URI_FIELD, uri.toString()));
doc.add(Field.Text(CONTENT_TEXT, readContent(revisionDescriptor, revisionContent)));
//It gives error
/* doc.add(new Field("frequency", "field value", Field.Store.YES, Field.Index.TOKENIZED, Field.TermVector.YES));*/
if ( revisionContent != null && revisionDescriptor != null ) {
List extractor = ExtractorManager.getInstance().getContentExtractors(uri.getNamespace().getName(), (NodeRevisionDescriptors)null, revisionDescriptor);
for ( int i = 0, l = extractor.size(); i < l; i++ ) {
Reader reader = ((ContentExtractor)extractor.get(i)).extract(new ByteArrayInputStream(revisionContent.getContentBytes()));
doc.add(Field.Text(CONTENT_TEXT, reader));
}
}
indexWriter.addDocument(doc);
indexWriter.optimize();
Sören Pekrul <soeren.pekrul [at] gmx> wrote:
aslam bari wrote:
> I am searching for a word "circle" in my indexed document list. It gives me total document found 4 i.e. Hits. But now i want to get how many occurances are there in each document i.e. frequency of words in result document.
Hello Aslam,
you should store the TermVector in the index as well:
doc.add(new Field("field name", "field value", Field.Store.YES,
Field.Index.TOKENIZED, Field.TermVector.YES));
"A term vector is a list of the document's terms and their number of
occurences in that document."
The IndexReader allows you to access the TermVector of a document:
TermFreqVector IndexReader.getTermFreqVector(int docNumber, String field)
I hope it helps.
Sören
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