Adding deployer to DeploymentUnit classpath

[ssilvert]

I need to add the classes bundled with the deployer to the classpath of a VFSDeploymentUnit.

This code doesn't work:

public void deploy(VFSDeploymentUnit unit, JBossWebMetaData metaData) throws DeploymentException {
 URL url = getClass().getClassLoader().getResource("/");
 VirtualFile vFile = VFS.getRoot(url);
 unit.addClassPath(vFile);
}

getResource("/") returns a URL that looks like vfsmemory://abc1t-caplls-fmgocucl-1-fmgoe37j-d/

But this code does work:

public void deploy(VFSDeploymentUnit unit, JBossWebMetaData metaData) throws DeploymentException {
 BaseClassLoader classloader = (BaseClassLoader)getClass().getClassLoader();
 URL url = new URL(classloader.getName());
 VirtualFile vFile = VFS.getRoot(url);
 unit.addClassPath(vFile);
}

BaseClassLoader.getName() happens to return vfsfile:/C:/projects/jboss5/trunk/build/output/jboss-5.0.0.GA/server/default/deployers/jsfunit.deployer/

I'd rather not rely on casting to BaseClassLoader and calling getName(). Is there a better way to do this?

Stan

[alesj]

Is there a better way to do this?

You can do it as I do it for Seam:
- http://anonsvn.jboss.org/repos/jbossas/projects/jboss-seam-int/trunk/microcontainer/src/main/java/org/jboss/seam/integration/microcontainer/deployers/SeamUrlIntegrationDeployer.java

Or, you're probably bundling your jfsunit-xyz-jboss-beans.xml in the same jar which you want to add to unit's classpath.
Why don't you just pull that url out with getClass().getClassLoader().getResource("jfsunit-xyz-jboss-beans.xml") and strip it to jar?

[ssilvert]

I'm building the deployer as a Maven uberjar using the shade plugin. So yes, it's the second case.

Stripping it out to the jar is still a hack, but I guess it's a better hack if it works.

For my own edification, why doesn't getClass().getClassLoader().getResource("/") work? Perhaps there should be some way for the vfsmemory url to get mapped back to a vfsfile url?

Stan

[alesj]

For my own edification, why doesn't getClass().getClassLoader().getResource("/") work?

Work in what way?
Is there something by the spec that says you must return the jar from where this class is loaded if you put in '/'?
If not, how else do you know which of the classpath entries to return?

Perhaps there should be some way for the vfsmemory url to get mapped back to a vfsfile url?

vfsmemory is different protocol then vfsfile.
vfsmemory is used to handle in-memory VirtualFiles.
We use it for in-memory AOP handling, hence every deployment has it by default in its classpath.