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From "Bill Bell (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-2242) Get distinct count of names for a facet field
Date Sun, 26 Jun 2011 19:07:47 GMT

    [ https://issues.apache.org/jira/browse/SOLR-2242?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13055151#comment-13055151
] 

Bill Bell commented on SOLR-2242:
---------------------------------

OK. Here are some test cases.

I am getting a weird error on running it: ant -Dtestcase=NumFacetTermsFacetsTest test

{code}
junit-sequential:
    [junit] Testsuite: org.apache.solr.request.NumFacetTermsFacetsTest
    [junit] Tests run: 1, Failures: 1, Errors: 0, Time elapsed: 4.072 sec
    [junit] 
    [junit] ------------- Standard Error -----------------
    [junit] NOTE: reproduce with: ant test -Dtestcase=NumFacetTermsFacetsTest -Dtestmethod=testNumFacetTermsFacetCounts
-Dtests.seed=3921835369594659663:-3219730304883530389
    [junit] *** BEGIN org.apache.solr.request.NumFacetTermsFacetsTest.testNumFacetTermsFacetCounts:
Insane FieldCache usage(s) ***
    [junit] SUBREADER: Found caches for descendants of DirectoryReader(segments_3 _0(4.0):C6)+hgid_i1
    [junit] 	'DirectoryReader(segments_3 _0(4.0):C6)'=>'hgid_i1',class org.apache.lucene.search.FieldCache$DocTermsIndex,org.apache.lucene.search.cache.DocTermsIndexCreator@603bb3eb=>org.apache.lucene.search.cache.DocTermsIndexCreator$DocTermsIndexImpl#1026179434
(size =~ 372 bytes)
    [junit] 	'org.apache.lucene.index.SegmentCoreReaders@7e8905bd'=>'hgid_i1',int,org.apache.lucene.search.cache.IntValuesCreator@30781822=>org.apache.lucene.search.cache.CachedArray$IntValues#291172425
(size =~ 92 bytes)
    [junit] 
    [junit] *** END org.apache.solr.request.NumFacetTermsFacetsTest.testNumFacetTermsFacetCounts:
Insane FieldCache usage(s) ***
    [junit] ------------- ---------------- ---------------
    [junit] Testcase: testNumFacetTermsFacetCounts(org.apache.solr.request.NumFacetTermsFacetsTest):
FAILED
    [junit] org.apache.solr.request.NumFacetTermsFacetsTest.testNumFacetTermsFacetCounts:
Insane FieldCache usage(s) found expected:<0> but was:<1>
    [junit] junit.framework.AssertionFailedError: org.apache.solr.request.NumFacetTermsFacetsTest.testNumFacetTermsFacetCounts:
Insane FieldCache usage(s) found expected:<0> but was:<1>
    [junit] 	at org.apache.lucene.util.LuceneTestCase.assertSaneFieldCaches(LuceneTestCase.java:725)
    [junit] 	at org.apache.lucene.util.LuceneTestCase.tearDown(LuceneTestCase.java:620)
    [junit] 	at org.apache.solr.SolrTestCaseJ4.tearDown(SolrTestCaseJ4.java:96)
    [junit] 	at org.apache.lucene.util.LuceneTestCase$LuceneTestCaseRunner.runChild(LuceneTestCase.java:1430)
    [junit] 	at org.apache.lucene.util.LuceneTestCase$LuceneTestCaseRunner.runChild(LuceneTestCase.java:1348)
    [junit] 
    [junit] 
    [junit] Test org.apache.solr.request.NumFacetTermsFacetsTest FAILED

{code}

> Get distinct count of names for a facet field
> ---------------------------------------------
>
>                 Key: SOLR-2242
>                 URL: https://issues.apache.org/jira/browse/SOLR-2242
>             Project: Solr
>          Issue Type: New Feature
>          Components: Response Writers
>    Affects Versions: 4.0
>            Reporter: Bill Bell
>            Assignee: Simon Willnauer
>            Priority: Minor
>             Fix For: 4.0
>
>         Attachments: SOLR-2242.patch, SOLR-2242.shard.patch, SOLR-2242.shard.patch, SOLR-2242.solr3.1.patch,
SOLR.2242.solr3.1.patch, SOLR.2242.v2.patch
>
>
> When returning facet.field=<name of field> you will get a list of matches for distinct
values. This is normal behavior. This patch tells you how many distinct values you have (#
of rows). Use with limit=-1 and mincount=1.
> The feature is called "namedistinct". Here is an example:
> http://localhost:8983/solr/select?shards=localhost:8983/solr,localhost:7574/solr&indent=true&q=*:*&facet=true&facet.mincount=1&facet.numFacetTerms=2&facet.limit=-1&facet.field=price
> http://localhost:8983/solr/select?shards=localhost:8983/solr,localhost:7574/solr&indent=true&q=*:*&facet=true&facet.mincount=1&facet.numFacetTerms=0&facet.limit=-1&facet.field=price
> http://localhost:8983/solr/select?shards=localhost:8983/solr,localhost:7574/solr&indent=true&q=*:*&facet=true&facet.mincount=1&facet.numFacetTerms=1&facet.limit=-1&facet.field=price
> This currently only works on facet.field.
> {code}
> <lst name="facet_fields">
>   <lst name="price">
>     <int name="numFacetTerms">14</int>
>     <int name="0.0">3</int><int name="11.5">1</int><int name="19.95">1</int><int
name="74.99">1</int><int name="92.0">1</int><int name="179.99">1</int><int
name="185.0">1</int><int name="279.95">1</int><int name="329.95">1</int><int
name="350.0">1</int><int name="399.0">1</int><int name="479.95">1</int><int
name="649.99">1</int><int name="2199.0">1</int>
>   </lst>
> </lst>
> {code} 
> Several people use this to get the group.field count (the # of groups).

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