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From Renaud Delbru <>
Subject Re: IndexingChain and TermHash
Date Mon, 16 Nov 2009 12:28:41 GMT
Hi Michael,

I see there is already a huge amount of work already done in 
LUCENE-1458. Is there a way to checkout the corresponding branch, and 
start to use it ? At least, to see if I can extend it and create my own 
I have started on my side to abstract the indexing chain of Lucene 2.9, 
in order to be able to plug my own chain, but I have the impression that 
you've done something similar already (with the codec abstraction). 
Would be a pity to lose my time doing something less convenient that 
your appraoch.

Renaud Delbru

On 14/11/09 13:22, Michael McCandless wrote:
> On Fri, Nov 6, 2009 at 1:34 PM, Renaud Delbru<>  wrote:
>> Hi Michael,
>> Thanks for the quick fix. I have tested it (indexing multiple documents +
>> searching), and it seems to work.
>> On 06/11/09 18:09, Michael McCandless wrote:
>>> To be honest, you are sort of forging new territory here :)
>> I think so too, not an easy task ;o). I have seen that you have tried to
>> make modular the indexing chain of Lucene (DocumentsWriter). I still try to
>> have a good understanding of the default indexing, but I would like to see
>> how it is easy (or difficult) to modify the format of the postings. From my
>> current understanding, it seems that only the consumer at the end of this
>> chain (FreqProxTermsWriter and its consumer FormatPostingsFieldsWriter) has
>> to be changed to a certain extend.
> Right, those two classes do the writing of the postings, currently.
> But with flexible indexing (LUCENE-1458), still in progress, we hope
> to make it more easily pluggable, the codec that actually reads&
> writes the postings.
> Mike
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