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From "Richard S. Hall" <he...@ungoverned.org>
Subject Re: compiling with felix 4.0.2 and java 7
Date Tue, 26 Jun 2012 17:25:36 GMT
On 6/26/12 12:57 , Chad.Davis@emc.com wrote:
> I just migrated from java6 --> java7.
>
> During compilation, I get a lot of errors pertaining to generic typing on classes from
felix, version 4.0.2; I've put the compilation errors at the bottom of this message.
>
> Here's something I found that suggests that the felix source might not be compiled with
java 1.7?
>
> https://github.com/osgi/bindex/issues/11

The Felix framework targets jsr14, which allowed it to take advantage of 
generics, but still have byte code compatible with JDK 1.4. If you are 
compiling against the framework JAR file in Java 7, then you need to 
recompile the framework using Java 7 (i.e., get rid of target jsr14). Of 
course, you could just get an OSGi API JAR compiled for Java 5 or above, 
since you likely don't need to compile against Felix framework internals...

The coming framework 4.2.0 release will target Java 5 instead of jsr14, 
so this issue should go away in the future.

-> richard

>
> Any thoughts?
>
>
>
> [ERROR] BUILD FAILURE
> [INFO] ------------------------------------------------------------------------
> [INFO] Compilation failure
>
> /support/FakeBundleContext.java:[28,31] error: type ServiceRegistration does not take
parameters
> /support/FakeBundleContext.java:[39,39] error: type ServiceReference does not take parameters
> /support/FakeBundleContext.java:[45,28] error: type ServiceReference does not take parameters
> /support/FakeBundleContext.java:[19,7] error: FakeBundleContext is not abstract and does
not override abstract method getServiceReferences(Class,String) in BundleContext
> /support/FakeBundleContext.java:[28,35] error: name clash: <S>registerService(Class<S>,S,Dictionary<String,?>)
in FakeBundleContext and registerService(Class,Object,Dictionary) in BundleContext have the
same erasure, yet neither overrides the other
>    where S is a type-variable:
>      S extends Object declared in method <S>registerService(Class<S>,S,Dictionary<String,?>)
> /support/FakeBundleContext.java:[27,1] error: method does not override or implement a
method from a supertype
> /support/FakeBundleContext.java:[39,44] error: name clash: <S>getServiceReferences(Class<S>,String)
in FakeBundleContext and getServiceReferences(Class,String) in BundleContext have the same
erasure, yet neither overrides the other
>    where S is a type-variable:
>      S extends Object declared in method <S>getServiceReferences(Class<S>,String)
> /support/FakeBundleContext.java:[38,1] error: method does not override or implement a
method from a supertype
> /support/FakeBundleContext.java:[45,32] error: name clash: <S>getServiceReference(Class<S>)
in FakeBundleContext and getServiceReference(Class) in BundleContext have the same erasure,
yet neither overrides the other
>    where S is a type-variable:
>      S extends Object declared in method <S>getServiceReference(Class<S>)
> /support/FakeBundleContext.java:[44,1] error: method does not override or implement a
method from a supertype
> /support/FakeBundle.java:[17,7] error: FakeBundle is not abstract and does not override
abstract method adapt(Class) in Bundle
> /support/FakeBundle.java:[186,1] error: method does not override or implement a method
from a supertype
> /support/FakeBundle.java:[191,14] error: name clash: <A>adapt(Class<A>) in
FakeBundle and adapt(Class) in Bundle have the same erasure, yet neither overrides the other
>    where A is a type-variable:
>      A extends Object declared in method <A>adapt(Class<A>)
> /support/FakeBundle.java:[190,1] error: method does not override or implement a method
from a supertype
>
> [INFO] ------------------------------------------------------------------------
> [INFO] For more information, run Maven with the -e switch
> [INFO] ------------------------------------------------------------------------
> [INFO] Total time: 5 seconds
> [INFO] Finished at: Tue Jun 26 10:51:00 MDT 2012
> [INFO] Final Memory: 45M/510M
> [INFO] ------------------------------------------------------------------------
>



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