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https://issues.apache.org/jira/browse/SOLR-938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12659566#action_12659566
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Kay Kay commented on SOLR-938:
------------------------------
Noble - In the revised patch - did you mean to add EventListener to the source
control as well since it would not compile at this point.
Also - with invokeEvent - I believe it might be better to reuse the
EventListener instance instead of recreating them again, for every
notification, since the ClassLoading and the instance creation might be
expensive (especially Class Loading). Storing the information during the
runtime might be useful for various event notification purposes.
> DataImportHandler: Add close hooks to the completion of a full-import process
> ------------------------------------------------------------------------------
>
> Key: SOLR-938
> URL: https://issues.apache.org/jira/browse/SOLR-938
> Project: Solr
> Issue Type: New Feature
> Components: contrib - DataImportHandler
> Affects Versions: 1.4
> Environment: JRE 6, Tomcat 6
> Reporter: Kay Kay
> Fix For: 1.4
>
> Attachments: SOLR-938.patch, SOLR-938.patch
>
> Original Estimate: 48h
> Remaining Estimate: 48h
>
> Adding a new feature that we need for continuation of a workflow based on a
> full-import procedure. When a full-import completes , the pre-defined hook
> method is called at the end of the same.
> Implementations that need to notified , need to implement the new interface -
> DataImportCloseHook and register themselves in the data config file as
> follows.
> <dataConfig>
> .
> .
> .
> .
> <closeHook type="com.myorg.fullimporter.closeHookImpl1" />
> <closeHook type="com.myorg.fullimporter.closeHookImpl2" />
> </dataConfig>
> A single instance of them is created (as part of DataImporter) during
> instantiation and the same insance is reused across multiple invocations.
> Since the dataImporter is protected by a thread-lock - there is no thred-safe
> guarantee for the implementations of the full-import close hook.
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