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Date: Mon, 17 May 2010 16:53:28 +0530
Message-ID: <AANLkTinUbMIXeupct6ss6yHZliEw41h3_8eeeNVMWJ2e@mail.gmail.com>
Subject: Problem of getTermFrequencies()
From: manjula wijewickrema <manjula53@gmail.com>
To: java-user@lucene.apache.org
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Hi,

I wrote a code with a view to display the indexed terms and get their term
frequencies of a single document. Although it displys those terms in the
index, it does not give the term frequencies. Instead it displays ' frequencies
are:[I@80fa6f '. What's the reason for this. The code I have written and the
display, can be given as follows.

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.index.IndexReader;
*

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.TermFreqVector;

*

import* java.io.BufferedReader;
*

import* java.io.FileReader;
*

import* java.io.IOException;
*

import* org.apache.lucene.analysis.StopAnalyzer;
*

import* org.apache.lucene.analysis.snowball.SnowballAnalyzer;


*

public* *class* Testing{

*

public* *static* *void* main(String[] args) *throws* IOException,
ParseException {

//StandardAnalyzer analyzer = new StandardAnalyzer(Version.LUCENE_CURRENT);

SnowballAnalyzer analyzer = *new* SnowballAnalyzer("English", StopAnalyzer.
ENGLISH_STOP_WORDS);

*try*{

Directory directory=*new* RAMDirectory();

IndexWriter w = *new* IndexWriter(directory, analyzer, *true*,

IndexWriter.MaxFieldLength.*UNLIMITED*);

Document doc = *new* Document();

String text="This is a sample codes code for testing lucene's capabilities
over lucene term frequencies";

doc.add(*new* Field("title", text, Field.Store.*YES*, Field.Index.*ANALYZED*
,Field.TermVector.*YES*));

w.addDocument(doc);

w.close();

IndexReader ir=IndexReader.open(directory);

TermFreqVector[] tfv=ir.getTermFreqVectors(0);

// for (int xy = 0; xy < tfv.length; xy++) {

String[] terms = tfv[0].getTerms();

*int*[] freqs=tfv[0].getTermFrequencies();

//System.out.println("terms are:"+tfv[xy]);

//System.out.println("length is:"+terms.length);

System.*out*.println("array terms are:"+tfv[0]);

System.*out*.println("terms are:"+terms);

System.*out*.println("frequencies are:"+freqs);

// }

 }*catch*(Exception ex){

ex.printStackTrace();

}

}

}


Display:

array terms are:{title: capabl/1, code/2, frequenc/1, lucen/2, over/1,
sampl/1, term/1, test/1}

terms are:[Ljava.lang.String;@1e13d52

frequencies are:[I@80fa6f


If some body can pls. help me to get the desired output.

Thanx,

Manjula.

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