Hello,
I try to use the Bundle.adapt method with Java 1.7.0_02 in the following
way:
Framework framework;
FrameworkStartLevel startLevelObject =
framework.adapt(FrameworkStartLevel.class);
This is ok for the Eclipse compiler (1.7) but when I try this with gradle
or with plain javac on command line I get the following compiler error:
error: incompatible types
FrameworkStartLevel startLevelObject =
framework.adapt(FrameworkStartLevel.class);
required: FrameworkStartLevel
found: Object
This compiler error I get with 'org.apache.felix.framework-4.0.2' as well
as with 'org.osgi.core-4.3.0' fetched from Maven repository.
With JD-JavaDecompiler I found out that the class file contains the
generics code in the same way as the osgi spec says and the secondary
sources artifact contains.
But 'javac -Xlint:all' command presents a warning for the Bundle.class file:
warning: [classfile] Signature attribute introduced in version 49.0
class files is ignored in version 48.0 class files
Decompiling the Bundle.class with 'javap' produces the following output:
>javap org\osgi\framework\Bundle -classpath . -verbose
Compiled from "Bundle.java"
public interface org.osgi.framework.Bundle extends java.lang.Comparable
Signature: length = 0x2
00 50
SourceFile: "Bundle.java"
minor version: 0
major version: 48
...
How can I use this with Java 7 or is this not possible? Why is the target
platform 48 (1.4) but the source is at least 1.5. Does this make any sense?
Thanks a lot in advance.
David
