[jira] [Created] (LUCENE-5092) join: don't expect all filters to be FixedBitSet instances

["Adrien Grand (JIRA)" <ji...@apache.org>]

Adrien Grand created LUCENE-5092:
------------------------------------

             Summary: join: don't expect all filters to be FixedBitSet instances
                 Key: LUCENE-5092
                 URL: https://issues.apache.org/jira/browse/LUCENE-5092
             Project: Lucene - Core
          Issue Type: Improvement
          Components: modules/join
            Reporter: Adrien Grand
            Assignee: Adrien Grand
            Priority: Minor


The join module throws exceptions when the parents filter isn't a FixedBitSet. The reason is that the join module relies on prevSetBit to find the first child document given a parent ID.

As suggested by Paul Elschot on LUCENE-5081, we could fix it by exposing methods in the iterators to iterate backwards. When the join modules gets an iterator which isn't able to iterate backwards, it would just need to dump its content into another DocIdSet that supports backward iteration, FixedBitSet for example.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: dev-help@lucene.apache.org