Hi Ian, Thanx for your reply. vector.size() returns the total number of indexed terms in the index. However I was able to run the program and get the results finally with your help. Thanks a lot.
Manjula On Thu, May 13, 2010 at 6:52 PM, Ian Lea <ian....@gmail.com> wrote: > What does vector.size() return? You don't appear to be doing anything > with the String term in "for ( String term : vector.getTerms() )" - > presumably you intend to. > > > -- > Ian. > > On Thu, May 13, 2010 at 1:16 PM, manjula wijewickrema > <manjul...@gmail.com> wrote: > > Dear Ian, > > > > Thanks a lot for your immediate reply. As you have mentioned I replaced > the > > lines as follows. > > > > > > IndexReader ir=IndexReader.open(directory); > > > > TermFreqVector vector=ir.getTermFreqVector(0,"fieldname"); > > > > Now the error has been vanished and thanks for it. But I can't still see > the > > results although I have moved those lines after iwriter.close(). What's > the > > reason for this? > > > > sample code after modifications: > > ......................... > > ........................ > > > > String text = "This is the text to be indexed."; > > > > doc.add(*new* Field("fieldname", text, Field.Store.*YES*,Field.Index.* > > ANALYZED*,Field.TermVector.*WITH_POSITIONS_OFFSETS*)); > > > > iwriter.addDocument(doc); > > > > iwriter.close(); > > > > IndexReader ir=IndexReader.open(directory); > > > > TermFreqVector vector=ir.getTermFreqVector(0,"fieldname"); > > * > > > > int* size = vector.size(); > > > > *for* ( String term : vector.getTerms() ) > > > > System.*out*.println( "size = " + size ); > > > > IndexSearcher isearcher = *new* IndexSearcher(directory, *true*); > > .......... > > .......... > > I appreciate your kind coperation > > Manjula > > On Thu, May 13, 2010 at 3:45 PM, Ian Lea <ian....@gmail.com> wrote: > > > >> You need to replace this: > >> > >> TermFreqVector vector = IndexReader.getTermFreqVector(0, "fieldname" ); > >> > >> with > >> > >> IndexReader ir = whatever(...); > >> TermFreqVector vector = ir.getTermFreqVector(0, "fieldname" ); > >> > >> And you'll need to move it to after the writer.close() call if you > >> want it to see the doc you've just added. > >> > >> > >> > >> -- > >> Ian. > >> > >> > >> > >> On Thu, May 13, 2010 at 11:07 AM, manjula wijewickrema > >> <manjul...@gmail.com> wrote: > >> > Dear All, > >> > > >> > I am trying to get the term frequencies (through TermFreqVector) of a > >> > document (using Lucene 2.9.1). In order to do that I have used the > >> following > >> > code. But there is a compile time error in the code and I can't figure > it > >> > out. Could somebody can guide me what's wrong with it. > >> > Compile time error I got: > >> > Cannot make a static reference to the non-static method > >> > getTermFreqVector(int, String) from the type IndexReader. > >> > > >> > Code: > >> > > >> > *import* org.apache.lucene.analysis.standard.StandardAnalyzer; > >> > > >> > *import* org.apache.lucene.document.Document; > >> > * > >> > > >> > import* org.apache.lucene.document.Field; > >> > * > >> > > >> > import* org.apache.lucene.index.IndexWriter; > >> > * > >> > > >> > import* org.apache.lucene.queryParser.ParseException; > >> > * > >> > > >> > import* org.apache.lucene.queryParser.QueryParser; > >> > * > >> > > >> > import* org.apache.lucene.search.*; > >> > * > >> > > >> > import* org.apache.lucene.store.Directory; > >> > * > >> > > >> > import* org.apache.lucene.store.RAMDirectory; > >> > * > >> > > >> > import* org.apache.lucene.util.Version; > >> > > >> > * > >> > > >> > import* org.apache.lucene.index.IndexReader; > >> > * > >> > > >> > import* org.apache.lucene.index.TermEnum; > >> > * > >> > > >> > import* org.apache.lucene.index.Term; > >> > * > >> > > >> > import* org.apache.lucene.index.TermFreqVector; > >> > > >> > * > >> > > >> > import* java.io.IOException; > >> > * > >> > > >> > public* *class* DemoTest { > >> > > >> > *public* *static* *void* main(String[] args) { > >> > > >> > StandardAnalyzer analyzer = *new* > >> StandardAnalyzer(Version.*LUCENE_CURRENT* > >> > ); > >> > > >> > *try* { > >> > > >> > Directory directory = *new* RAMDirectory(); > >> > > >> > IndexWriter iwriter = *new* IndexWriter(directory, analyzer, > >> > *true*,*new*IndexWriter.MaxFieldLength(25000)); > >> > > >> > Document doc = *new* Document(); > >> > > >> > String text = "This is the text to be indexed."; > >> > > >> > doc.add(*new* Field("fieldname", text, Field.Store.*YES*,Field.Index.* > >> > ANALYZED*,Field.TermVector.*WITH_POSITIONS_OFFSETS*)); > >> > > >> > iwriter.addDocument(doc); > >> > > >> > TermFreqVector vector = IndexReader.getTermFreqVector(0, "fieldname" > ); > >> > * > >> > > >> > int* size = vector.size(); > >> > > >> > *for* ( String term : vector.getTerms() ) > >> > > >> > System.*out*.println( "size = " + size ); > >> > > >> > iwriter.close(); > >> > > >> > IndexSearcher isearcher = *new* IndexSearcher(directory, *true*); > >> > > >> > QueryParser parser = *new* QueryParser(Version.*LUCENE_CURRENT*, > >> "fieldname", > >> > analyzer); > >> > > >> > Query query = parser.parse("text"); > >> > > >> > ScoreDoc[] hits = isearcher.search(query, *null*, 1000).scoreDocs; > >> > > >> > System.*out*.println("hits.length(1) = " + hits.length); > >> > > >> > // Iterate through the results: > >> > > >> > *for* (*int* i = 0; i < hits.length; i++) { > >> > > >> > Document hitDoc = isearcher.doc(hits.doc); > >> > > >> > System.*out*.println("hitDoc.get(\"fieldname\") (This is the text to > be > >> > indexed) = " + > >> > > >> > hitDoc.get("fieldname")); > >> > > >> > } > >> > > >> > isearcher.close(); > >> > > >> > directory.close(); > >> > > >> > } *catch* (Exception ex) { > >> > > >> > ex.printStackTrace(); > >> > > >> > } > >> > > >> > } > >> > > >> > } > >> > > >> > > >> > > >> > Thanks in advance > >> > > >> > Manjula > >> > > >> > >> --------------------------------------------------------------------- > >> To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > >> For additional commands, e-mail: java-user-h...@lucene.apache.org > >> > >> > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > >