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https://issues.apache.org/jira/browse/SOLR-5720?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joel Bernstein resolved SOLR-5720.
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Resolution: Fixed
> Add ExpandComponent to expand results collapsed by the CollapsingQParserPlugin
> ------------------------------------------------------------------------------
>
> Key: SOLR-5720
> URL: https://issues.apache.org/jira/browse/SOLR-5720
> Project: Solr
> Issue Type: New Feature
> Reporter: Joel Bernstein
> Assignee: Joel Bernstein
> Priority: Minor
> Fix For: 4.8, 5.0
>
> Attachments: SOLR-5720.patch, SOLR-5720.patch, SOLR-5720.patch,
> SOLR-5720.patch, SOLR-5720.patch, SOLR-5720.patch, SOLR-5720.patch,
> SOLR-5720.patch, SOLR-5720.patch
>
>
> This ticket introduces a new search component called the ExpandComponent. The
> expand component expands a single page of results collapsed by the
> CollapsingQParserPlugin.
> Sample syntax:
> {code}
> q=*:*&fq={!collapse
> field=fieldA}&expand=true&expand.sort=fieldB+asc&expand.rows=10
> {code}
> In the above query the results are collapsed on "fieldA" with the
> CollapsingQParserPlugin. The expand component expands the current page of
> collapsed results.
> The initial implementation of the ExpandComponent takes three parameters:
> *expand=true* (Turns on the ExpandComponent)
> *expand.sort=fieldB+asc,fieldC+desc* (Sorts the documents based on a sort
> spec. If none is specified the documents are sorted by relevance based on the
> main query.)
> *expand.rows=10* (Sets the numbers of rows that groups are expanded to).
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