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Getting the Eclipse Context for DI [message #553253]

Mon, 16 August 2010 20:22

U. Geerds

Messages: 10
Registered: July 2010

Junior Member

Hi anybody,

I'm trying to use @Inject values with the ContextInjectionFactory.make(MyClass.class, context). To do this, i need the correct EclipseContext. If the class who calls ContextInjectionFactory.make or .inject, has a injected EclipseContext from the E4, it works fine.

What is right way, to get the EclipseContext from a POJO who isn't created from the E4 and hasn't a injected Context and resides at another Plug-In? It is possible?

I played around with the EclipseContextFactory, who is described at the vogella articles, but i get always a empty or invalid EclipseContext.

Thanks a lot. Uwe

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Re: Getting the Eclipse Context for DI [message #553263 is a reply to message #553253]

Mon, 16 August 2010 20:59

Thomas Schindl

Messages: 6599
Registered: July 2009

Senior Member

You can't. Who is creating the instance? In the end there always have to
be something was instatiated by the e4 platform and you need to pass
through the IEclipseContext from there.

Tom

Am 16.08.10 22:22, schrieb U. Geerds:
> Hi anybody,
>
> I'm trying to use @Inject values with the
> ContextInjectionFactory.make(MyClass.class, context). To do this, i need
> the correct EclipseContext. If the class who calls
> ContextInjectionFactory.make or .inject, has a injected EclipseContext
> from the E4, it works fine.
>
> What is right way, to get the EclipseContext from a POJO who isn't
> created from the E4 and hasn't a injected Context and resides at another
> Plug-In? It is possible?
>
> I played around with the EclipseContextFactory, who is described at the
> vogella articles, but i get always a empty or invalid EclipseContext.
>
>
> Thanks a lot. Uwe

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Re: Getting the Eclipse Context for DI [message #553520 is a reply to message #553253]

Tue, 17 August 2010 19:00

Paul Webster

Messages: 6859
Registered: July 2009
Location: Ottawa

Senior Member

As Tom asks, "where are you?" :-)

The IEclipseContexts form a hierarchy, with an OSGi lookup context and
the application context at the top. Every other context is created as a
child of the application context. For a given IEclipseContext, it
should be able to create one using createChild(*), no?

Are you controlling your entire IEclipseContext hierarchy (and the
services available) for your own use of DI, or are you trying to operate
within an E4 application?

PW

--
Paul Webster
http://wiki.eclipse.org/Platform_Command_Framework
http://wiki.eclipse.org/Command_Core_Expressions
http://wiki.eclipse.org/Menu_Contributions
http://wiki.eclipse.org/Menus_Extension_Mapping
http://help.eclipse.org/galileo/index.jsp?topic=/org.eclipse .platform.doc.isv/guide/workbench.htm

Paul Webster
http://wiki.eclipse.org/Platform_Command_Framework
http://wiki.eclipse.org/Command_Core_Expressions
http://wiki.eclipse.org/Menu_Contributions

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