Re: [CLucene-dev] Retrieve all values for a given field ?

[Kostka B. <ko...@to...>]

Hello,

Create Term from field name and emty valu
Call read->terms( Term * ) to get term enum
Use TermDocs together with TermEnum to get related document ids

RangeQuery::rewrite(IndexReader* reader) could be a good example I think

This way is very efficient, but you should not read other document field values inside this cycle

Regards

Borek

From: norbert barichard [mailto:nor...@di...]
Sent: Monday, January 26, 2015 4:37 PM
To: clu...@li...
Subject: [CLucene-dev] Retrieve all values for a given field ?

Hello, me again, with yet another CLucene question !

I would like to retrieve (in a relatively fast way) all the values for a given field. For example, if my index looks like :
Document1 ( fieldName=value1 )
Document2 (fieldName=value1 )
Document3 (fieldName=value2 )
Document4 (fieldName=value2 )

I'd like to be able to call something like getFieldValues( "fieldName" ) and get a list ( value1, value2 ) in return.

How can I do that ?

Thanks in advance
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