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

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

     [ https://issues.apache.org/jira/browse/USERGRID-254?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Johnson reassigned USERGRID-254:
--------------------------------------

    Assignee: David Johnson

> 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
>            Assignee: 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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