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https://issues.apache.org/jira/browse/SOLR-1499?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martijn van Groningen resolved SOLR-1499.
-----------------------------------------
Resolution: Fixed
Committed to trunk and 3x.
> SolrEntityProcessor - DIH EntityProcessor that queries an external Solr via
> SolrJ
> ---------------------------------------------------------------------------------
>
> Key: SOLR-1499
> URL: https://issues.apache.org/jira/browse/SOLR-1499
> Project: Solr
> Issue Type: New Feature
> Components: contrib - DataImportHandler
> Reporter: Lance Norskog
> Fix For: 3.6, 4.0
>
> Attachments: SOLR-1499-3x.patch, SOLR-1499-trunk.patch,
> SOLR-1499.core.rev1182017.patch, SOLR-1499.patch, SOLR-1499.patch,
> SOLR-1499.patch, SOLR-1499.patch, SOLR-1499.patch, SOLR-1499.patch,
> SOLR-1499.patch, SOLR-1499.patch, SOLR-1499.patch,
> SOLR-1499.tests.rev1182017.patch
>
>
> The SolrEntityProcessor queries an external Solr instance. The Solr documents
> returned are unpacked and emitted as DIH fields.
> The SolrEntityProcessor uses the following attributes:
> * solr='http://localhost:8983/solr/sms'
> ** This gives the URL of the target Solr instance.
> *** Note: the connection to the target Solr uses the binary SolrJ format.
> * query='Jefferson&sort=id+asc'
> ** This gives the base query string use with Solr. It can include any
> standard Solr request parameter. This attribute is processed under the
> variable resolution rules and can be driven in an inner stage of the indexing
> pipeline.
> * rows='10'
> ** This gives the number of rows to fetch per request..
> ** The SolrEntityProcessor always fetches every document that matches the
> request..
> * fields='id,tag'
> ** This selects the fields to be returned from the Solr request.
> ** These must also be declared as <field> elements.
> ** As with all fields, template processors can be used to alter the contents
> to be passed downwards.
> * timeout='30'
> ** This limits the query to 5 seconds. This can be used as a fail-safe to
> prevent the indexing session from freezing up. By default the timeout is 5
> minutes.
> Limitations:
> * Solr errors are not handled correctly.
> * Loop control constructs have not been tested.
> * Multi-valued returned fields have not been tested.
> The unit tests give examples of how to use it as the root entity and an inner
> entity.
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