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https://issues.apache.org/jira/browse/SOLR-269?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12511206
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Hoss Man commented on SOLR-269:
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the idea of letting people override the processor on a per request basis seems
very scary and depending on what kinds of stuff yo uwere expecting hte
processor to do, could introduce some serous bugs ... but then again, if it's a
param, it can be specified as an invariant if you want to ensure that doesn't
happen.
i guess hte key thing is just that the RequestHandler has final say over what
Processor gets used ... we can provide handy tools/conventions to get that info
from the config or the request, but a very simplistic RequestHandler should be
able to hardcode it for absolute control.
> UpdateRequestProcessorFactory - process requests before submitting them
> -----------------------------------------------------------------------
>
> Key: SOLR-269
> URL: https://issues.apache.org/jira/browse/SOLR-269
> Project: Solr
> Issue Type: New Feature
> Reporter: Ryan McKinley
> Assignee: Ryan McKinley
> Fix For: 1.3
>
> Attachments: SOLR-269-UpdateRequestProcessorFactory.patch,
> SOLR-269-UpdateRequestProcessorFactory.patch,
> SOLR-269-UpdateRequestProcessorFactory.patch, UpdateProcessor.patch
>
>
> A simple UpdateRequestProcessor was added to a bloated SOLR-133 commit.
> An UpdateRequestProcessor lets clients plug in logic after a document has
> been parsed and before it has been 'updated' with the index. This is a good
> place to add custom logic for:
> * transforming the document fields
> * fine grained authorization (can user X updated document Y?)
> * allow update, but not delete (by query?)
> <requestHandler name="/update" class="solr.StaxUpdateRequestHandler" >
> <str
> name="update.processor.class">org.apache.solr.handler.UpdateRequestProcessor</str>
> <lst name="update.processor.args">
> ... (optionally pass in arguments to the factory init method) ...
> </lst>
> </requestHandler>
> http://www.nabble.com/Re%3A-svn-commit%3A-r547495---in--lucene-solr-trunk%3A-example-solr-conf-solrconfig.xml-src-java-org-apache-solr-handler-StaxUpdateRequestHandler.java-src-java-org-apache-solr-handler-UpdateRequestProcessor.jav-tf3950072.html#a11206583
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