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https://issues.apache.org/jira/browse/SOLR-182?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ryan McKinley updated SOLR-182:
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Attachment: SOLR-182-RuntimeRequestHandlers.patch
This update loads handlers in the style suggested by Hoss.
It makes sure everything is instanciated and registered before calling init()
on any handlres registered in solrconfig.xml
It calls init() on handlers in the order they were defined.
The only open issue is if SolrCore.getRequestHandler() should be synchronized.
I can't think of any potential problems if it isn't but i could be missing
something.
I'll let whoever commits this decide if it should be synchronized or not.
> register SolrRequestHandlers at runtime / lazy loading
> ------------------------------------------------------
>
> Key: SOLR-182
> URL: https://issues.apache.org/jira/browse/SOLR-182
> Project: Solr
> Issue Type: Improvement
> Reporter: Ryan McKinley
> Fix For: 1.2
>
> Attachments: SOLR-182-RuntimeRequestHandlers.patch,
> SOLR-182-RuntimeRequestHandlers.patch, SOLR-182-RuntimeRequestHandlers.patch,
> SOLR-182-RuntimeRequestHandlers.patch
>
>
> It would be useful to be able to register handlers after SolrCore has been
> initialized initialized. It is also useful to be able to ask what handlers
> are registered and to where. This patch adds the following functions to
> SolrCore:
> SolrRequestHandler registerRequestHandler(String handlerName,
> SolrRequestHandler handler);
> Collection<SolrRequestHandler> getRequestHandlers(Class<? extends
> SolrRequestHandler> clazz);
> It also guarantees that request handlers will be initialized with an argument
> saying what path it is registered to. RequestHandlerBase gets a bean for the
> registered path.
> While discussing this, Yonik suggested making it possible to defer
> initialization of some handlers that will be infrequently used. I added the
> 'LazyRequestHandlerWrapper' (if taking this out makes the patch any easier
> to commit - it can get its own issue)
> check:
> http://www.nabble.com/Dynamic-RequestHandler-loading-tf3351707.html
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