Hi Michael,
Michael McCandless wrote:
Also, this issue was just opened:
https://issues.apache.org/jira/browse/LUCENE-1419
which would make it possible for classes in the same package
(oal.index) to use their own indexing chain. With that fix, if you
make your own classes in oal.index package, and perhaps subclass the
above classes, you could then create your own indexing chain for
indexing? If you take that approach, please report back so we can
learn how to improve Lucene for these very advanced customizations!
As a first impression, what will be handy in order to customize postings
list will be to make an abstract class FreqProxTermsWriter, that
separates segment creation and term information serialisation. This
class will implement the generic logic for flushing and appending
postings, but will delegate to subclasses the way you write doc + freq
and prox + payload info.
A first idea will be to have the following abstract methods:
- writeMinState : called by appendPostings, and define how to serialise
one FreqProxFieldMergeState
- writeDocFreq : called by writeMinState, and define how to serialise
docs and freq
- writeProx: called by writeMinState and define how to serialise
positions and payloads
I think other parts of the FreqProxTermsWriter can stay generic. What do
you think ?
Regards.
--
Renaud Delbru
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