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From "Jens Deppe (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (GEODE-28) Gfsh's 'deploy' command needs enhancements to recognize Spring Data GemFire Annotated (deployed) Functions.
Date Thu, 03 Mar 2016 21:13:18 GMT

     [ https://issues.apache.org/jira/browse/GEODE-28?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jens Deppe updated GEODE-28:
----------------------------
    Component/s:     (was: management)
                 gfsh

> Gfsh's 'deploy' command needs enhancements to recognize Spring Data GemFire Annotated
(deployed) Functions.
> -----------------------------------------------------------------------------------------------------------
>
>                 Key: GEODE-28
>                 URL: https://issues.apache.org/jira/browse/GEODE-28
>             Project: Geode
>          Issue Type: Improvement
>          Components: functions, gfsh
>         Environment: Apache Geode with Gfsh
>            Reporter: John Blum
>              Labels: ApacheGeode, DeployCommand, Function, Gfsh
>
> If developers want to "implement" _Apache Geode_ {{Functions}} using [_Spring Data GemFire's_
Function Annotation support|http://docs.spring.io/spring-data-gemfire/docs/current/reference/html/#function-annotations],
then they are unable to leverage other _Geode_ features as a result.
> One such feature is the ability to use _Gfsh's_ '{{deploy}}' command to (re-)deploy JAR
files containing [Function|http://gemfire.docs.pivotal.io/latest/javadocs/japi/com/gemstone/gemfire/cache/execute/Function.html]
classes "implementing" _Apache Geode_ {{Functions}} that may have been modified and _Geode_
will "automatically" +detect+ and subsequently +register+ those updated JAR packaged {{Function(s)}}.
> I have been asked, "_what is *Spring Data GemFire* going to do to support the (hot) {{deploy}}
feature?_"  However, this is the +wrong+ question.
> It is not what SDG can do since, technically, this is a limitation in _Geode_ (and by
extension _GemFire_), and _Geode_ only detects _Geode_ specific types (in particular, and
+only+... [com.gemstone.gemfire.cache.Function|http://gemfire.docs.pivotal.io/latest/javadocs/japi/com/gemstone/gemfire/cache/execute/Function.html]
class types).  While non-{{Function}} classes and resources are technically added to the "custom"
CLASSPATH (defined by an "internal", _Geode_ {{ClassLoader}}), there is no recognition and
"first-class" support for non-_Geode_ types thereby complicating the matter for technologies
that integrate with _Geode_ such as _Spring_.
> So, the right question is, "_what can _Geode_ do to recognize additional types (or rather,
meta-data annotated class types) that are not part of the core _Geode_ types?
> In essence, _Apache Goede's_ Gfsh '{{deploy}}' command needs to be enhanced to recognize
SDG-defined Function Annotated POJOs and act accordingly, in this case.



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