java - Lucene distinct result -

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please, me distinct result field. tried go many way, googled... can't ti.

i tried add hashset, tried duplicatefilter. think collector without success. result. use java, lucene-2.9.3.

example:

some_id   description 1         bbb aaa  1         aaa ccc 2         aaa ddd 2         fff aaa

and if search description in result must distinct some_id (1,2).

maybe have solution or have code example.

thanks advance.

the very-new (still patch) grouping module on https://issues.apache.org/jira/browse/lucene-1421 might relevant here. enables group hits according field. example, if group "author" documents having same author in same group.


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