[jira] [Created] (USERGRID-254) Add Event system to Collections module, use it to clean up old indices

["David Johnson (JIRA)" <ji...@apache.org>]

David Johnson created USERGRID-254:
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             Summary: Add Event system to Collections module, use it to clean up old indices
                 Key: USERGRID-254
                 URL: https://issues.apache.org/jira/browse/USERGRID-254
             Project: Usergrid
          Issue Type: Story
            Reporter: David Johnson


When the Core module EntityManager deletes or updates Entities in the Collections module, the Query Index records for the old versions of that Entity need to be deleted.

To enable this, we added an eventing system to the Collections module so that callers can hook into entity create, update and delete events.

And we added event handlers to clean up the Query Index records for those events. 

See the new package in Collections module:
   org.apache.usergrid.persistence.collection.event

And in Core:
   org.apache.usergrid.corepersistence.events





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