Hi Adrien,
Thank you very much for the reply.
I have two other small question about this:
1) Is "final int freq = docsAndPositions.freq();" the same with
"iterator.totalTermFreq()" ? In my tests it returns the same result and from
the documentation it seems that the result should be the same.
2) How do I get the offsets for the term vector? I have tried to iterate over
the docsAndPositions but I get the following exception:
Exception in thread "main" java.lang.IllegalStateException: Position enum not
started
Thanks in advance,
Andi
> From: jpou...@gmail.com
> Date: Tue, 2 Apr 2013 12:05:12 +0200
> Subject: Re: Term vector Lucene 4.2
> To: java-user@lucene.apache.org
>
> Hi Andi,
>
> Here is how you could retrieve positions from your document:
>
> Terms termVector = indexReader.getTermVector(docId, fieldName);
> TermsEnum reuse = null;
> TermsEnum iterator = termVector.iterator(reuse);
> BytesRef ref = null;
> DocsAndPositionsEnum docsAndPositions = null;
> while ((ref = iterator.next()) != null) {
> docsAndPositions = iterator.docsAndPositions(null, docsAndPositions);
> // beware that docsAndPositions will be null if you didn't
> index positions
> if (docsAndPositions.nextDoc() != 0) { // you need to call
> nextDoc() to have the enum positioned
> throw new AssertionError();
> }
> final int freq = docsAndPositions.freq(); // number of
> occurrences of the term
> for (int i = 0; i < freq; ++i) {
> final int position = docsAndPositions.nextPosition();
> // 'position' is the i-th position of the current term in the
> document
> }
> }
>
> I hope this helps.
>
> --
> Adrien
>
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