You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@lucene.apache.org by "Robert Muir (Commented) (JIRA)" <ji...@apache.org> on 2011/12/04 14:11:40 UTC
[jira] [Commented] (LUCENE-2929) all postings enums must explicitly
declare what they need up-front.
[ https://issues.apache.org/jira/browse/LUCENE-2929?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13162394#comment-13162394 ]
Robert Muir commented on LUCENE-2929:
-------------------------------------
{quote}
Instead of making a new class for every combination of attrs, I think
we should have "class per dimension"
{quote}
+1
> all postings enums must explicitly declare what they need up-front.
> -------------------------------------------------------------------
>
> Key: LUCENE-2929
> URL: https://issues.apache.org/jira/browse/LUCENE-2929
> Project: Lucene - Java
> Issue Type: Task
> Reporter: Robert Muir
> Fix For: 4.0
>
> Attachments: LUCENE-2929.patch, LUCENE-2929.patch, LUCENE-2929.patch
>
>
> Currently, the DocsEnum api assumes you *might* consumes freqs at any time.
> Additionally the DocsAndPositionsEnum api assumes you *might* consume a payload at any time.
> High level things such as queries know what kinds of data they need from the index up-front,
> and the current APIs are limiting to codecs (other than Standard, which has these intertwined).
> So, we either need DocsAndFreqsEnum, DocsPositionsAndPayloadsEnum, or at least booleans
> in the methods that create these to specify whether you want freqs or payloads.
> we did this for freqs in the bulkpostings API, which is good, but these DocsEnum apis
> are also new in 4.0 and there's no reason to introduce non-performant APIs.
> additionally when/if we add payloads to the bulkpostings API, we should make sure we keep
> the same trend and require you to specify you want payloads or not up-front.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
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