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From "Shekhar (JIRA)" <>
Subject [jira] Commented: (SOLR-236) Field collapsing
Date Mon, 15 Jun 2009 18:06:08 GMT


Shekhar commented on SOLR-236:

Here is the solfconfig file.

<requestHandler name="geo" class="solr.SearchHandler">
    <lst name="defaults">     
        <str name="echoParams">explicit</str>
    <arr name="components">


Following are the results I am getting :

<lst name="responseHeader">
<int name="status">0</int>
<int name="QTime">146</int>
<lst name="params">
<str name="lat">41.883784</str>
<str name="radius">50</str>
<str name="collapse.field">resource_id</str>
<str name="rows">2</str>
<str name="indent">on</str>
<str name="fl">resource_id,geo_distance</str>
<str name="q">TV</str>
<str name="qt">geo</str>
<str name="long">-87.637668</str>
<result name="response" numFound="4294" start="0">
<int name="resource_id">10018</int>
<double name="geo_distance">26.16691883965225</double>
<int name="resource_id">10102</int>
<double name="geo_distance">39.90588996589528</double>
<lst name="collapse_counts">
<str name="field">resource_id</str>
<lst name="doc">
<int name="10022">116</int>
<int name="11701">4</int>
<lst name="count">
<int name="10015">116</int>
<int name="10018">4</int>
<lst name="debug">
<str name="Docset type">BitDocSet(5201)</str>
<long name="Total collapsing time(ms)">46</long>
<long name="Create uncollapsed docset(ms)">22</long>
<long name="Collapsing normal time(ms)">24</long>
<long name="Creating collapseinfo time(ms)">0</long>
<long name="Convert to bitset time(ms)">0</long>
<long name="Create collapsed docset time(ms)">0</long>
<result name="response" numFound="5201" start="0">
<int name="resource_id">10015</int>
<int name="resource_id">10018</int>

> Field collapsing
> ----------------
>                 Key: SOLR-236
>                 URL:
>             Project: Solr
>          Issue Type: New Feature
>          Components: search
>    Affects Versions: 1.3
>            Reporter: Emmanuel Keller
>             Fix For: 1.5
>         Attachments: collapsing-patch-to-1.3.0-dieter.patch, collapsing-patch-to-1.3.0-ivan.patch,
collapsing-patch-to-1.3.0-ivan_2.patch, collapsing-patch-to-1.3.0-ivan_3.patch, field-collapse-solr-236-2.patch,
field-collapse-solr-236.patch, field-collapsing-extended-592129.patch, field_collapsing_1.1.0.patch,
field_collapsing_1.3.patch, field_collapsing_dsteigerwald.diff, field_collapsing_dsteigerwald.diff,
field_collapsing_dsteigerwald.diff, SOLR-236-FieldCollapsing.patch, SOLR-236-FieldCollapsing.patch,
SOLR-236-FieldCollapsing.patch, solr-236.patch, SOLR-236_collapsing.patch, SOLR-236_collapsing.patch
> This patch include a new feature called "Field collapsing".
> "Used in order to collapse a group of results with similar value for a given field to
a single entry in the result set. Site collapsing is a special case of this, where all results
for a given web site is collapsed into one or two entries in the result set, typically with
an associated "more documents from this site" link. See also Duplicate detection."
> The implementation add 3 new query parameters (SolrParams):
> "collapse.field" to choose the field used to group results
> "collapse.type" normal (default value) or adjacent
> "collapse.max" to select how many continuous results are allowed before collapsing
> TODO (in progress):
> - More documentation (on source code)
> - Test cases
> Two patches:
> - "field_collapsing.patch" for current development version
> - "field_collapsing_1.1.0.patch" for Solr-1.1.0
> P.S.: Feedback and misspelling correction are welcome ;-)

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