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From "Yonik Seeley (JIRA)" <>
Subject [jira] Updated: (SOLR-1682) Implement CollapseComponent
Date Sat, 26 Jun 2010 18:32:51 GMT


Yonik Seeley updated SOLR-1682:

    Attachment: SOLR-1682_prototype.patch

Here's an early prototype of mine, updated to trunk.  It's designed to collapsing on an arbitrary
function (value source).  It only implements the first-phase level-1 collapsing, and assumes
a single comparator for simplicity.

The previous patches here (which I've just now started looking at) look pretty solid.  It's
surprising how similar the first level collapse is (how a single field comparator group used
for everything, defer building the treeset, etc).

I have some time to work on this now... I think I'll approach it by merging this patch with
mine, working on getting a single collapse option working well enough to commit.  The original
SOLR-236 is simply too big and it feels like there are too many options to grapple with at
the same time.

> Implement CollapseComponent
> ---------------------------
>                 Key: SOLR-1682
>                 URL:
>             Project: Solr
>          Issue Type: Sub-task
>          Components: search
>            Reporter: Martijn van Groningen
>            Assignee: Shalin Shekhar Mangar
>             Fix For: Next
>         Attachments: field-collapsing.patch, SOLR-1682.patch, SOLR-1682.patch, SOLR-1682_prototype.patch,
> Child issue of SOLR-236. This issue is dedicated to field collapsing in general and all
its code (CollapseComponent, DocumentCollapsers and CollapseCollectors). The main goal is
the finalize the request parameters and response format.

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