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https://issues.apache.org/jira/browse/SOLR-182?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12483794
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Hoss Man commented on SOLR-182:
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related note i'm typing before i forget...
in SOLR-81 i tried to call SolrCore.getSolrCore.getDataDir() in the init method
of a requestHandler and got an infinite loop. I can't remember if this type of
situation would be prevented by this patch or not ... if it isn't that doesn't
mean this patch shouldn't be committed, it just means we should probably open a
separate bug to try and detect/prevent/error in that situation.
> 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, 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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