[jira] Assigned: (TAPESTRY-720) Tapestry should validate that all engine services provide a non-null service parameter

["Howard M. Lewis Ship (JIRA)" <ta...@jakarta.apache.org>]

     [ http://issues.apache.org/jira/browse/TAPESTRY-720?page=all ]

Howard M. Lewis Ship reassigned TAPESTRY-720:
---------------------------------------------

    Assign To: Howard M. Lewis Ship

> Tapestry should validate that all engine services provide a non-null service parameter
> --------------------------------------------------------------------------------------
>
>          Key: TAPESTRY-720
>          URL: http://issues.apache.org/jira/browse/TAPESTRY-720
>      Project: Tapestry
>         Type: Bug
>   Components: Framework
>     Versions: 4.0
>     Reporter: Howard M. Lewis Ship
>     Assignee: Howard M. Lewis Ship

>
> This could be checked by the LinkFactory.
> Currently, a service implementation that does not provide a value for the service parameter can cause NPEs inside service encoders:
> Stack Trace:
>     * org.apache.tapestry.engine.encoders.PageServiceEncoder.encode(PageServiceEncoder.java:41)
>     * org.apache.tapestry.services.impl.LinkFactoryImpl.createServiceEncoding(LinkFactoryImpl.java:138)
>     * org.apache.tapestry.services.impl.LinkFactoryImpl.constructLink(LinkFactoryImpl.java:106)
>     * $LinkFactory_1071a0bf7a7.constructLink($LinkFactory_1071a0bf7a7.java)
>     * lab.services.LocaleService.getLink(LocaleService.java:54)
>     * $IEngineService_1071a0bf83a.getLink($IEngineService_1071a0bf83a.java)
>     * org.apache.tapestry.services.impl.EngineServiceInnerProxy.getLink(EngineServiceInnerProxy.java:69)
>     * org.apache.tapestry.services.impl.EngineServiceOuterProxy.getLink(EngineServiceOuterProxy.java:60)
>     * lab.components.LocaleLink.renderComponent(LocaleLink.java:80)
>     * org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:617)
>     * org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.java:434)
>     * org.apache.tapestry.html.Body.renderComponent(Body.java:129)

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