[
https://issues.apache.org/jira/browse/JENA-381?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Andy Seaborne resolved JENA-381.
--------------------------------
Resolution: Fixed
Assignee: Andy Seaborne
> Composed graphs do no generate listener event for deletion on iterator.
> -----------------------------------------------------------------------
>
> Key: JENA-381
> URL: https://issues.apache.org/jira/browse/JENA-381
> Project: Apache Jena
> Issue Type: Bug
> Components: Jena
> Affects Versions: Jena 2.7.4, Jena 2.10.0
> Reporter: Claude Warren
> Assignee: Andy Seaborne
> Attachments: jena-381.patch
>
>
> Composed graphs do no generate listener event for deletion on iterator as
> indicated by failure of testEventDeleteByFind() in AbstractTestGraph
> Analysis:
> returned iterator is a composite of the iterators on the base graph. e.g.
> AIter.andThen( BIter ). When remove is called it is executed against the
> base graph. The composed graph does not listen to the base graphs and thus
> does not broadcast the subgraph deletion to its listeners.
> Potential Solution:
> Have the composite graph register as a listener to the base graphs and
> rebroadcast all events to its listeners. I expect that this will cause
> duplicate notification for currently broadcast events and that several
> methods that modify the graph and broadcast the change will have to be
> modified so as not to announce the change but let the underlying graph
> announce it.
> Alternative Solution:
> Modify the iterator so that it wraps the currently returned iterator trap the
> delete method and announces the deletion to its listeners after calling the
> delete on the wrapped iterator.
> The alternative solution is probably easier to implement.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
