[jira] [Assigned] (SOLR-5720) Add ExpandComponent, which expands results collapsed by the CollapsingQParserPlugin

["Joel Bernstein (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-5720?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Joel Bernstein reassigned SOLR-5720:
------------------------------------

    Assignee: Joel Bernstein

> Add ExpandComponent, which expands results collapsed by the CollapsingQParserPlugin
> -----------------------------------------------------------------------------------
>
>                 Key: SOLR-5720
>                 URL: https://issues.apache.org/jira/browse/SOLR-5720
>             Project: Solr
>          Issue Type: New Feature
>    Affects Versions: 5.0, 4.7
>            Reporter: Joel Bernstein
>            Assignee: Joel Bernstein
>            Priority: Minor
>             Fix For: 5.0, 4.7
>
>         Attachments: 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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