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https://issues.apache.org/jira/browse/SOLR-236?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12566864#action_12566864
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oleg_gnatovskiy edited comment on SOLR-236 at 2/7/08 4:18 PM:
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Hello everyone. I am planning to implement chain collapsing on a high traffic
production environment, so I'd like to use a stable version of Solr. It doesn't
seem like you have a chain collapse patch for Solr 1.2, so I tried the Solr 1.1
patch. It seems to work fine at collapsing, but how do I get a countt for the
documents other then the one being displayed?
As a result I see:
<lst name="collapse_counts">
<int name="Restaurant">2414</int>
<int name="Bar/Club">9</int>
<int name="Directory & Services">37</int>
</lst>
Does that mean that there are 2414 more Restaurants, 9 more Bars and 37 more
Directory & Services? If so, then that's great.
However when I collapse on some fields I get an empty collapse_counts list. It
could be that those fields have a large number of different values that it
collapses on. Is there a limit to the number of values that collaose_counts
displays?
Thanks in advance for any help you can provide!
was (Author: oleg_gnatovskiy):
Hello everyone. I am planning to implement chain collapsing on a high
traffic production environment, so I'd like to use a stable version of Solr. It
doesn't seem like you have a chain collapse patch for Solr 1.2, so I tried the
Solr 1.1 patch. It seems to work fine at collapsing, but how do I get a countt
for the documents other then the one being displayed?
As a result I see:
<lst name="collapse_counts">
<int name="Restaurant">2414</int>
<int name="Bar/Club">9</int>
<int name="Directory & Services">37</int>
</lst>
Does that mean that there are 2414 more Restaurants, 9 more Bars and 37 more
Directory & Services? If so, then that's great.
However when I collapse on some integer fields I get an empty list for
collapse_counts. Do counts only work for text fields?
Thanks in advance for any help you can provide!
> Field collapsing
> ----------------
>
> Key: SOLR-236
> URL: https://issues.apache.org/jira/browse/SOLR-236
> Project: Solr
> Issue Type: New Feature
> Components: search
> Affects Versions: 1.3
> Reporter: Emmanuel Keller
> Attachments: field-collapsing-extended-592129.patch,
> field_collapsing_1.1.0.patch, field_collapsing_1.3.patch,
> field_collapsing_dsteigerwald.diff, field_collapsing_dsteigerwald.diff,
> SOLR-236-FieldCollapsing.patch, SOLR-236-FieldCollapsing.patch,
> SOLR-236-FieldCollapsing.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."
> http://www.fastsearch.com/glossary.aspx?m=48&amid=299
> 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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