[jira] Commented: (TAP5-1013) Live class reloading for service implementations

["Massimo Lusetti (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/TAP5-1013?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12832482#action_12832482 ] 

Massimo Lusetti commented on TAP5-1013:
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I'm not sure to fully understand the whole story behind this, but a question arise.

Doesn't this involve a (big) overhead within services and services interactions?



> Live class reloading for service implementations
> ------------------------------------------------
>
>                 Key: TAP5-1013
>                 URL: https://issues.apache.org/jira/browse/TAP5-1013
>             Project: Tapestry 5
>          Issue Type: Bug
>          Components: tapestry-ioc
>    Affects Versions: 5.0.19
>            Reporter: Howard M. Lewis Ship
>
> It should be possible to create a class loader for (each) service implementation that can reload the service when its underlying class changes.
> Once could imagine this as a special proxy; possibly this would require a particular service scope ("reloadable").
> Periodically, a check could occur to let the proxies see if the underlying service implementation class file has changed and, if so, create a new class loader to load that specific class, much as tapestry-core does with component.
> This would involve moving some number of services from tapestry-core to tapestry-ioc, and there are implications related to some public services.
> I think it would be too much to support reloadable modules, just service implementations.  Therefore, services that are constructed via a builder method would not be reloadable.
> However, some methods of ObjectLocator (such as autoproxy()) should be able to hot reload the underlying class as well.

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