register SolrRequestHandlers at runtime / lazy loading
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Key: SOLR-182
URL: https://issues.apache.org/jira/browse/SOLR-182
Project: Solr
Issue Type: Improvement
Reporter: Ryan McKinley
Fix For: 1.2
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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