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From "Andrus Adamchik (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CAY-1873) Move DataDomain cache configuration from the Modeler and into DI
Date Sat, 12 Apr 2014 12:34:16 GMT

    [ https://issues.apache.org/jira/browse/CAY-1873?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13967489#comment-13967489
] 

Andrus Adamchik commented on CAY-1873:
--------------------------------------

When started working on the integration of the patches, I noticed a few more things that we
need to address. I also did a bit of cleanup to make things easier (see r1586855). So... 

1. We can't switch EventBridge creation procedure on the ROP client by injecting EventBridgeFactory
to RemoteSession. First, such factory is not expected to be serializable, and RemoteSession
is passed across the wire. My refactoring per r1586855 moved EventBridge logic creation procedure
to HessianConnection. And this Jira should not change it anymore I think. 

2. Concrete  EventBridgeFactory classes now have two methods. One that takes properties, another
one that doesn't. At the same time they were refactored to store properties in ivars. Meaning
the method that takes properties changes the  state of the factory object. Aside from concurrency
implications, this is a bad coding style for a factory. How about we do it differently - we
keep EventBridgeFactory unchanged, and it will only be used on the ROP client (see #1 above).
And for server-side code, we use Provider<EventBridge> that implements the second variety
of the method (without properties argument).. This is instead of Provider<EventBridgeFactory>..
This should make things much cleaners.

> Move DataDomain cache configuration from the Modeler and into DI
> ----------------------------------------------------------------
>
>                 Key: CAY-1873
>                 URL: https://issues.apache.org/jira/browse/CAY-1873
>             Project: Cayenne
>          Issue Type: Task
>            Reporter: Andrus Adamchik
>            Assignee: Andrus Adamchik
>         Attachments: cay1873.patch, cay1873_modeler.patch, cay1873_test.patch, cay1873v2.patch,
cay1873v2_test.patch, x.png
>
>
> Cache configuration for DataDomain is currently done in the Modeler. (this configuration
is limited to the "object cache" [1], query cache is configured in DI already)  and this seems
misplaced. Cache settings are highly environment dependent and are better managed by DI. So
let's remove all these screens from the Modeler and create any needed DI services that perform
this configuration function.
> (The next step, outside the scope of this Jira, may be combining query cache and object
cache in the same cache engine)
> [1] http://cayenne.apache.org/docs/3.0/caching-and-fresh-data.html



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