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https://issues.apache.org/jira/browse/LUCENE-2110?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12787401#action_12787401
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Uwe Schindler edited comment on LUCENE-2110 at 12/8/09 10:42 AM:
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Here a small update that changed nextSeekTerm to also provide the current
TermRef. It will be null on first call. This removes the ugly if (unitialized)
code in Automaton.
Also the delegate enum is now private, as its state should be unchangeable by
subclasses.
I will now work on a better approach with only accept using an extended
AcceptStatus with next seek term). The current patch will now be committed.
was (Author: thetaphi):
Here a small update that changed nextSeekTerm to also provide the current
TermRef. It will be null on first call. This removes the ugly if (unitialized)
code in Automaton.
I will now work on a better approach with only accept using an extended
AcceptStatus with next seek term). The current patch will now be committed.
> Refactoring of FilteredTermsEnum and MultiTermQuery
> ---------------------------------------------------
>
> Key: LUCENE-2110
> URL: https://issues.apache.org/jira/browse/LUCENE-2110
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Search
> Affects Versions: Flex Branch
> Reporter: Uwe Schindler
> Assignee: Uwe Schindler
> Fix For: Flex Branch
>
> Attachments: LUCENE-2110-nextSeekTermUpd.patch, LUCENE-2110.patch,
> LUCENE-2110.patch, LUCENE-2110.patch, LUCENE-2110.patch, LUCENE-2110.patch,
> LUCENE-2110.patch
>
>
> FilteredTermsEnum is confusing as it is initially positioned to the first
> term. It should instead work like an uninitialized TermsEnum for a field
> before the first call to next() or seek().
> FilteredTermsEnums cannot implement seek() as eg. NRQ or Automaton are not
> able to support this. Seeking is also not needed for MTQ at all, so seek can
> just throw UOE.
> This issue changes some of the internal behaviour of MTQ and
> FilteredTermsEnum to allow also seeking in NRQ and Automaton (see comments
> below).
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