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https://issues.apache.org/jira/browse/SOLR-269?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12616511#action_12616511
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noble.paul edited comment on SOLR-269 at 7/24/08 9:00 AM:
----------------------------------------------------------
bq.Many processors need to maintain state within a request. Check the 'log'
processor. I have one that checks if the user has permission on everything in
the request before executing the commands.
I do not think we need a factory where we need to maintain local state .
Everything can be maintained in the method stack
example
{code}
class LocalState{
class LogUpdateProcessor extends UpdateRequestProcessor {
private final SolrQueryRequest req;
private final SolrQueryResponse rsp;
private final UpdateRequestProcessor next;
private final NamedList<Object> toLog;
doSomething(){
//do your thing
}
}
public class LogUpdateProcessor extends UpdateRequestProcessor
@Override
public void processAdd(AddUpdateCommand cmd) throws IOException {
LocalState state = new LocalState ();//pass the params
state.doSomeThing()
}
}
{code}
Here the method acts as the factory and the framework does not have to worry
was (Author: noble.paul):
bq.Many processors need to maintain state within a request. Check the 'log'
processor. I have one that checks if the user has permission on everything in
the request before executing the commands.
I do not think we need a factory where we need to maintain local state .
Everything can be maintained in the method stack
example
{code}
class LocalState{
class LogUpdateProcessor extends UpdateRequestProcessor {
private final SolrQueryRequest req;
private final SolrQueryResponse rsp;
private final UpdateRequestProcessor next;
private final NamedList<Object> toLog;
doSomething(){
//do your thing
}
}
public class LogUpdateProcessor extends UpdateRequestProcessor
@Override
public void processAdd(AddUpdateCommand cmd) throws IOException {
LocalState state = new LocalState ();//pass the params
state.doSomeThing()
}
}
{code}
> 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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