[cdi-dev] [JBoss JIRA] (CDI-114) Allow registration of beans at runtime
Mark Struberg (Commented) (JIRA)
jira-events at lists.jboss.org
Wed Nov 16 04:38:40 EST 2011
[ https://issues.jboss.org/browse/CDI-114?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12643254#comment-12643254 ]
Mark Struberg commented on CDI-114:
Maybe we need to clarify further what we both understand under the term 'dynamic Bean'
What I meant is: dynamically adding Bean<T> metainformation to the container at runtime. E.g. disabling a class or adding a Bean<T> under load which would completely change the behaviour of the container.
I think this is very dangerous.
What will perfectly work already is the following: Have a Bean<T> which gets parsed and scanned on startup and which behaves differently in Contextual<T>#create() depending on the situation and it might even change it's behaviour at runtime (to some degree).
Currently it will be a bad idea to e.g. change the EL name of a bean at runtime. This will produce crap if the EL-Resolver caches the name-> bean mapping for example. We could introduce a Bean<T>#isDynamic() to prevent the container from applying caching in CDI-1.1.
But a fundamental design decision as of today is that the rules which lead to finding that Bean<T> do not change.
Maybe you could explain what kind of 'dynamics' you have in XWiki?
> Allow registration of beans at runtime
> Key: CDI-114
> URL: https://issues.jboss.org/browse/CDI-114
> Project: CDI Specification Issues
> Issue Type: Feature Request
> Components: Beans
> Affects Versions: 1.0
> Reporter: Vincent Massol
> Fix For: TBD
> I have use cases where I need to register a bean dynamically at runtime (see the forum reference link for a detailed description of the use case).
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