Re: [sisu-users] Sisu documentation

[Gernot Kvas <gernot@xxxxxxx>]

On 09/27/2012 07:29 PM, Stuart McCulloch wrote:
> One of the original use-cases for Sisu was wiring up an RCP application, so this is definitely in scope (though there are still some rough edges to smooth out).
>
> > Wrt. bootstrapping. Given an RCP application, the "start" method of the
> > IApplication would be the right place to have a
> > "SisuGuice.inject(MyClass.class)" ?
> The SisuGuice.inject method expects an existing instance that needs field/setter injection (btw, this class is expected to change in the API cleanup).
>
> To ask Sisu to construct (and inject) a component you can use the SisuGuice.lookup method, which takes a Guice key such as Key.get( MyClass.class ).
>
> One of the other tasks on the road-map is to reduce this dependency/use of Guice-specific types to make it easier to re-use the code elsewhere.

Hi Stuart,

I'm currently struggling a bit with getting things running, but some 
progress is there.

I've started of with a small app (two bundles, where one bundle injects 
a service from the other). Insights I've gained so far:

* Sisu relies on "import javax.inject" to determine which bundles to 
scan. That took a while for me to notice, because I defining a 
dependency to javax.inject rather than importing the package.

* What kills me currently is a missing dependency to 
javax.enterprise.inject.Typed, which appears to be required although 
being only marked as optional in the MANIFEST.MF of 
org.eclipse.sisu.inject. This causes a ClassNotFoundException somewhere in

java.lang.NoClassDefFoundError: javax/enterprise/inject/Typed
    at 
org.eclipse.sisu.binders.QualifiedTypeBinder.getBindingTypes(QualifiedTypeBinder.java:332)
    at 
org.eclipse.sisu.binders.QualifiedTypeBinder.bindQualifiedType(QualifiedTypeBinder.java:228)
    at 
org.eclipse.sisu.binders.QualifiedTypeBinder.hear(QualifiedTypeBinder.java:111)
    at 
org.eclipse.sisu.scanners.QualifiedTypeVisitor.visitEnd(QualifiedTypeVisitor.java:118)
    at org.objectweb.asm.ClassReader.accept(Unknown Source)
    at org.objectweb.asm.ClassReader.accept(Unknown Source)
    at 
org.eclipse.sisu.scanners.ClassSpaceScanner.accept(ClassSpaceScanner.java:102)
    at 
org.eclipse.sisu.scanners.ClassSpaceScanner.accept(ClassSpaceScanner.java:78)
    at org.eclipse.sisu.binders.SpaceModule.configure(SpaceModule.java:92)
    at 
com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:230)
    at com.google.inject.spi.Elements.getElements(Elements.java:103)
    at com.google.inject.spi.Elements.getElements(Elements.java:80)
    at org.eclipse.sisu.binders.WireModule.configure(WireModule.java:60)
    at 
com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:230)
    at com.google.inject.spi.Elements.getElements(Elements.java:103)
    at 
com.google.inject.internal.InjectorShell$Builder.build(InjectorShell.java:136)
    at 
com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:104)
    at com.google.inject.Guice.createInjector(Guice.java:96)
    at com.google.inject.Guice.createInjector(Guice.java:73)
    at com.google.inject.Guice.createInjector(Guice.java:62)
    at 
org.eclipse.sisu.containers.SisuActivator$BundleInjector.<init>(SisuActivator.java:221)
    at 
org.eclipse.sisu.containers.SisuActivator.addingBundle(SisuActivator.java:105)

* Another issue that arises is within the "SisuActivator". In line 97, 
there is a check to avoid scanning org.eclipse.sisu itself. Is this 
check correct? The symbolic name of the sisu bundle in my case is 
"org.eclipse.sisu.inject", rather than "org.eclipse.sisu".

* I'm currently using sisu-guice, but could I use vanilla Guice without 
any problemes?

Cheers,

Gernot