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Posted to java-user@lucene.apache.org by John Patterson <jd...@gmail.com> on 2008/08/13 11:02:56 UTC
Listing fields in an index
Hi,
How do I list all the fields in an index? Some documents do not contain all
fields.
Thanks,
John
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Re: Listing fields in an index
Posted by Murat Yakici <mu...@cis.strath.ac.uk>.
Use myIndexReader.|*getFieldNames
<http://www.netlikon.de/docs/javadoc-lucene/lucene_2_3/org/apache/lucene/index/IndexReader.html#getFieldNames%28org.apache.lucene.index.IndexReader.FieldOption%29>*(IndexReader.FieldOption
<http://www.netlikon.de/docs/javadoc-lucene/lucene_2_3/org/apache/lucene/index/IndexReader.FieldOption.html> fldOption)|;
That should do.
The selection of FieldOption's is important, therefore you need to know
what you really want to get.
Cheers,
Murat Yakici
Department of Computer & Information Sciences
University of Strathclyde
Glasgow, UK
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John Patterson wrote:
> Hi,
>
> How do I list all the fields in an index? Some documents do not contain all
> fields.
>
> Thanks,
>
> John
>
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Re: Listing fields in an index
Posted by John Patterson <jd...@gmail.com>.
Thanks! I was looking in IndexReader for a good couple of minutes and didn't
see that!
Erik Hatcher wrote:
>
>
> On Aug 13, 2008, at 5:02 AM, John Patterson wrote:
>> How do I list all the fields in an index? Some documents do not
>> contain all
>> fields.
>
> Have a look at IndexReader#getFieldNames(). That'll give you back
> field names regardless of which documents have them.
>
> Erik
>
>
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> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
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>
>
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Re: Listing fields in an index
Posted by Erik Hatcher <er...@ehatchersolutions.com>.
On Aug 13, 2008, at 5:02 AM, John Patterson wrote:
> How do I list all the fields in an index? Some documents do not
> contain all
> fields.
Have a look at IndexReader#getFieldNames(). That'll give you back
field names regardless of which documents have them.
Erik
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