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https://issues.apache.org/jira/browse/ISIS-597?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13830645#comment-13830645
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Oscar Bou commented on ISIS-597:
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Thanks, Dan.
Let me detail the use case. Perhaps there are other ways, but this is the only
one I can think of.
I have a Service that needs to instantiate a "server" at start-up.
This "server" needs to be initialized with other Services, so they must be
injected.
On those Services, there are actions that use an Isis Session to create
fixtures, obtain default values, etc.
As it must be created on start-up, if I don't want to use Timers, etc. I think
it should be done on @PostConstruct.
If implemented on other Dependency Injection framework, such as Spring, I would
define all beans and inject them as needed and also use the @PostConstruct
method (just in the case that the "server" would not be defined also as a bean
and injected).
Are there any alternatives with Isis to ensure the "server" is created at
start-up?
Thanks,
Oscar
> Services still not injected when entering @PostConstruct methods on a Service
> -----------------------------------------------------------------------------
>
> Key: ISIS-597
> URL: https://issues.apache.org/jira/browse/ISIS-597
> Project: Isis
> Issue Type: Improvement
> Components: Core, Objectstore: JDO
> Affects Versions: objectstore-jdo-1.3.0, core-1.3.0
> Reporter: Oscar Bou
> Assignee: Dan Haywood
> Fix For: objectstore-jdo-1.4.0, core-1.4.0
>
>
> Methods annotated with @PostConstruct are invoked before their objects being
> injected.
> Steps to reproduce:
> As per [1], create a method on a service annotated with @PostConstruct, like
> this one:
> @PostConstruct
> public void init(final Map<?, ?> props) {
> server.setGlobal("eventOccurrences", this.eventOccurrences);
>
> }
> ....
> // {{ injected: EventOccurrences
> private EventOccurrences eventOccurrences;
> public final void injectEventOccurrences(final EventOccurrences
> eventOccurrences) {
> this.eventOccurrences = eventOccurrences;
> }
> // }}
> The problem is that when the execution arrives to:
> server.setGlobal("eventOccurrences", this.eventOccurrences);
> this.eventOccurrences is still null... So it has not yet been injected (or
> instantiated).
> [1] http://isis.apache.org/core/services/initializing-services.html
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