UpdateRequestProcessorFactory - process requests before submitting them
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                 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


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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