使用来自库的注释，该库不是Tycho构建中的包

Question

I'm building an Eclipse plugin using Tycho and am making use of Declarative Services for my OSGi services. Eclipse has a nice Editor for DS files, but it still is a manual process, which means it's slow and error-prone.

In non-Tycho OSGi projects I can use the maven-scr-plugin to generate these annotations. The catch with Tycho is that I can't add a reference to the org.apache.felix.annotations jar since it's

• not present in a p2 repository
• not a bundle

These annotations are defined with a RetentionPolicy = CLASS , so they don't have to be in a bundle.

I know about dependency on pom-first artifacts , but it's not going to work for me since the annotations jar is not a bundle. Ideally I could just configure Tycho/Eclipse to look for an extra jar just at compile time.

How can I get a compile-time only jar considered by Tycho and Eclipse?

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Update : I've tried to use the extraClasspathElements option of the tycho-compiler-plugin . That does allow me to invoke the maven-scr-plugin (see the current pom.xml ). However, it seems that the scr plugin can't access the classes, as the build fails with

[ERROR] Failed to execute goal org.apache.felix:maven-scr-plugin:1.13.0:scr (generate-scr-descriptor) on project org.apache.sling.ide.eclipse-core: /mnt/md/robert/git/sling-ide-tools/eclipse-core/src/org/apache/sling/ide/eclipse/core/ServerUtil.java : Unable to load compiled class: org.apache.sling.ide.eclipse.core.ServerUtil

You can also see the full build log

Answer 1

Since you are using Tycho/Eclipse, you probably want to use "org.eclipse.equinox.ds" rather than "org.apache.felix.annotations". If I understand correctly, org.eclipse.equinox.ds is a bundle. The Tycho FAQ mentions this as well:

http://wiki.eclipse.org/Tycho/FAQ#How_to_add_a_undeclared_dependency.3F__.28e.g..2C_OSGi_declarative_service.29

EDIT:

http://eclipse.org/tycho/sitedocs/tycho-compiler-plugin/compile-mojo.html#extraClasspathElements

EDIT2: A lot has changed. I'll be updating my answer when time permits. Check the comment threads in the meantime =)

Answer 2

I think the best you can do is to separate your building in two steps. One for building the felix (scr/bnd) based bundles. the result will be on a local maven repository and all will be already bundles with the manifests and component xmls.

As the annotation is processed only at building time you won't have any problem with the following step.

The second step is to build the tycho based artifacts(bundles,features,rcp,p2,etc) that will consume the bundles in the first build.