[jira] [Closed] (MNG-7662) Proxy session scoped components so that they can be injected into singletons beans

["Guillaume Nodet (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MNG-7662?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Guillaume Nodet closed MNG-7662.
--------------------------------
    Resolution: Fixed

> Proxy session scoped components so that they can be injected into singletons beans
> ----------------------------------------------------------------------------------
>
>                 Key: MNG-7662
>                 URL: https://issues.apache.org/jira/browse/MNG-7662
>             Project: Maven
>          Issue Type: Bug
>            Reporter: Christoph Läubrich
>            Assignee: Guillaume Nodet
>            Priority: Major
>             Fix For: 4.0.0-alpha-9
>
>
> The {{SessionScope}} will now create proxies to wrap beans when there's a need to inject a bean while the session scope is not yet available. Such proxies require the use of a {{Typed}} annotation, either the {{org.eclipse.sisu.Typed}} or {{javax.enterprise.inject.Typed}} annotation, to be put on the bean that requires to be wrapped by a proxy.
> {code:java}
>     @Named
>     static class MySingletonBean {
>         @Inject
>         BeanItf myBean;
>     }
>     interface BeanItf {
>         Session getSession();
>     }
>     @SessionScoped
>     @Typed
>     static class MySessionScopedBean implements BeanItf {
>         @Inject
>         Session session;
>         public Session getSession() {
>             return session;
>         }
>     }
> {code}
> =======
> Original problem:
> Currently DefaultMaven gets the Graphbuilder injected as a strict requirement at a very early stage. This leads to the problem, that a GraphBuilder implementation can not use any SessionScoped Components (because the session scope is not setup yet).
> The error then is
> {code:java}
> 1) Error in custom provider, com.google.inject.OutOfScopeException: Cannot access Key[type=org.apache.maven.execution.MavenSession, annotation=[none]] outside of a scoping block
>   at org.apache.maven.session.scope.internal.SessionScopeModule.configure(SessionScopeModule.java:64) (via modules: org.eclipse.sisu.wire.WireModule -> org.apache.maven.session.scope.internal.SessionScopeModule)
>   while locating org.apache.maven.execution.MavenSession
>     for the 1st parameter of org.eclipse.tycho.helper.PluginRealmHelper.<init>(Unknown Source)
>   at ClassRealm[coreExtension>org.eclipse.tycho:tycho-build:${tycho-version}, parent: ClassRealm[plexus.core, parent: null]] (via modules: org.eclipse.sisu.wire.WireModule -> org.eclipse.sisu.plexus.PlexusBindingModule)
>   while locating org.eclipse.tycho.helper.PluginRealmHelper
>   at ClassRealm[coreExtension>org.eclipse.tycho:tycho-build:${tycho-version}, parent: ClassRealm[plexus.core, parent: null]] (via modules: org.eclipse.sisu.wire.WireModule -> org.eclipse.sisu.plexus.PlexusBindingModule)
>   while locating org.eclipse.tycho.p2maven.InstallableUnitGenerator
>   at ClassRealm[coreExtension>org.eclipse.tycho:tycho-build:${tycho-version}, parent: ClassRealm[plexus.core, parent: null]] (via modules: org.eclipse.sisu.wire.WireModule -> org.eclipse.sisu.plexus.PlexusBindingModule)
>   while locating org.eclipse.tycho.p2maven.MavenProjectDependencyProcessor
>   while locating org.eclipse.tycho.build.TychoGraphBuilder
> {code}



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