I think we're not quite there yet, where you can create a custom
indexing format easily and store your custom Attributes. What's
especially missing is an API on the retrieval side, on a
TermDocs/TermPositions level, that can read custom indexing formats. We
also need to make the SegmentMerger more flexible, so that it can merge
the custom codecs.
LUCENE-1458 goes into that direction, but obviously it's not going into
2.9/3.0. So hopefully in 3.1 we'll be able to do the stuff you're asking
for.
Even though we don't have flexible indexing yet, I think we made great
progress towards it already. Especially with Mike's restructuring of the
indexer and the Attributes API.
We should probably work on the wiki page that we have for flexible
indexing and identify work items, so that it's easy to see what the
current state is and what the plans are (as it was recently suggested on
java-dev). Let's do that after 2.9 is out.
Michael
On 8/5/09 11:21 AM, Grant Ingersoll wrote:
I've been trying out the new Attribute stuff and still am a bit
stumped as to where all of this stuff gets us. I can create
Attributes and AttributeSources to my heart's content, but don't see
an obvious path towards actually getting them in the index. I gather
it has something to do with DocConsumer, IndexingChain, etc. but the
APIs and javadocs are less than forthcoming. AFAICT, the only way to
set the IndexingChain is through a package protected constructor. I'm
happy to document, but it is non-obvious to me at the moment.
Is there a path forward with all of this stuff? I'd like to create an
AttributeTermQuery so that we can actually use all of this stuff for
something more than a exercise in programming, but I want to make sure
it is in line with where all of this is going.
Thanks,
Grant
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