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https://issues.apache.org/jira/browse/SOLR-5773?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13912270#comment-13912270
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David commented on SOLR-5773:
-----------------------------
To better illustrate what I'm talking about add the following to
TestCollapseQParserPlugin.java
{code}
String[] doc7 = {"id","7", "term_s","YYYY", "group_s", "group1", "test_ti",
"10", "test_tl", "1300", "test_tf", "4020"};
assertU(adoc(doc7));
assertU(commit());
{code}
And now update elevate.xml
{code}
<query text="YYYY">
<doc id="7" />
</query>
{code}
The result after running the test for elevate is
{code}
<response>
<lst name="responseHeader">
<int name="status">0</int>
<int name="QTime">100</int>
<lst name="params">
<str name="q">YYYY</str>
<str name="fq">{!collapse field=group_s}</str>
<str name="defType">edismax</str>
<str name="bf">field(test_ti)</str>
<str name="qf">term_s</str>
<str
name="fl">id,term_s,group_s,test_ti,test_tl,test_tf,[elevated]</str>
<str name="qt">/elevate</str>
</lst>
</lst>
<result name="response" numFound="3" start="0">
<doc>
<float name="id">7.0</float>
<str name="term_s">YYYY</str>
<str name="group_s">group1</str>
<int name="test_ti">10</int>
<long name="test_tl">1300</long>
<float name="test_tf">4020.0</float>
<bool name="[elevated]">true</bool>
</doc>
<doc>
<float name="id">2.0</float>
<str name="term_s">YYYY</str>
<str name="group_s">group1</str>
<int name="test_ti">50</int>
<long name="test_tl">100</long>
<float name="test_tf">200.0</float>
<bool name="[elevated]">false</bool>
</doc>
<doc>
<float name="id">6.0</float>
<str name="term_s">YYYY</str>
<str name="group_s">group2</str>
<int name="test_ti">10</int>
<long name="test_tl">100</long>
<float name="test_tf">200.0</float>
<bool name="[elevated]">false</bool>
</doc>
</result>
</response>
{code}
You can see that there are now two results for group1 when all I really want is
the elevated document to be shown for group1
> CollapsingQParserPlugin problem with ElevateComponent
> -----------------------------------------------------
>
> Key: SOLR-5773
> URL: https://issues.apache.org/jira/browse/SOLR-5773
> Project: Solr
> Issue Type: Improvement
> Components: query parsers
> Affects Versions: 4.6.1
> Reporter: David
> Labels: collapse, solr
> Fix For: 4.7
>
> Original Estimate: 8h
> Remaining Estimate: 8h
>
> Hi Joel,
> I sent you an email but I'm not sure if you received it or not. I ran into a
> bit of trouble using the CollapsingQParserPlugin with elevated documents. To
> explain it simply, I want to exclude grouped documents when one of the
> members of the group are contained in the elevated document set. I'm not sure
> this is possible currently because as you explain above elevated documents
> are added to the request context after the original query is constructed.
> To try to better illustrate the problem. If I have 2 documents docid=1 and
> docid=2 and both have a groupid of 'a'. If a grouped query scores docid 2
> first in the results but I have elevated docid 1 then both documents are
> shown in the results when I really only want the elevated document to be
> shown in the results.
> Is this something that would be difficult to implement? Any help is
> appreciated.
> I think the solution would be to remove the documents from liveDocs that
> share the same groupid in the getBoostDocs() function. Let me know if this
> makes any sense. I'll continue working towards a solution in the meantime.
> {code}
> private IntOpenHashSet getBoostDocs(SolrIndexSearcher indexSearcher,
> Set<String> boosted) throws IOException {
> IntOpenHashSet boostDocs = null;
> if(boosted != null) {
> SchemaField idField = indexSearcher.getSchema().getUniqueKeyField();
> String fieldName = idField.getName();
> HashSet<BytesRef> localBoosts = new HashSet(boosted.size()*2);
> Iterator<String> boostedIt = boosted.iterator();
> while(boostedIt.hasNext()) {
> localBoosts.add(new BytesRef(boostedIt.next()));
> }
> boostDocs = new IntOpenHashSet(boosted.size()*2);
> List<AtomicReaderContext>leaves =
> indexSearcher.getTopReaderContext().leaves();
> TermsEnum termsEnum = null;
> DocsEnum docsEnum = null;
> for(AtomicReaderContext leaf : leaves) {
> AtomicReader reader = leaf.reader();
> int docBase = leaf.docBase;
> Bits liveDocs = reader.getLiveDocs();
> Terms terms = reader.terms(fieldName);
> termsEnum = terms.iterator(termsEnum);
> Iterator<BytesRef> it = localBoosts.iterator();
> while(it.hasNext()) {
> BytesRef ref = it.next();
> if(termsEnum.seekExact(ref)) {
> docsEnum = termsEnum.docs(liveDocs, docsEnum);
> int doc = docsEnum.nextDoc();
> if(doc != -1) {
> //Found the document.
> boostDocs.add(doc+docBase);
> *// HERE REMOVE ANY DOCUMENTS THAT SHARE THE GROUPID NOT ONLY
> THE DOCID //*
> it.remove();
> }
> }
> }
> }
> }
> return boostDocs;
> }
> {code}
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