JBoss 5.1 class loading question

[scao]

Hi,
I have a class loading question in JBoss 5.1.

In JBoss 4.x, from ear we could use the method 'addURL' of 'org.jboss.mx.loading.RepositoryClassLoader' to load classes from a jar file (The jar file is under a directory somewhere)

But in JBoss 5.1, this class is removed. Instead it is using a new class org.jboss.classloader.spi.base.BaseClassLoader.

My question is: how to load classes from a jar file under a certain directory in JBoss 5.1.

Thanks in advance.

[jaikiran]

How/where were you using that API earlier? And where exactly is the jar file located? Is it inside your app or inside the server directories or outside the server?

[scao]

I have '<load-on-startup>1</load-on-startup>' serlvet to get an instance of ServiceLocator. It get the classloader from the instance of ServiceLocator. Then cast it to RepositoryClassLoader. We could load classes in Jar file from a directory which is outside of server directory.

I use this way to load some classes from a jar file which is developed after the product is installed at customer site, for example: customized workflow handlers. They have to be load within the ear classloader, not server classloader.

Here is the sample code:

RepositoryClassLoader targetCL =
 (RepositoryClassLoader) com.xyz.ServiceLocator.getInstance().getClass().getClassLoader();
 String[] jarFileNames = getAllAppJarFileNames();
 StringBuffer buffer = new StringBuffer();
 for(int i = 0; i < jarFileNames.length; i++) {
 try {
 targetCL.addURL(new File(jarFileNames).toURL());
 } catch (Exception e) {
 theLogger.warn("Could not add external app jar file to server classloader: " + jarFileNames, e);
 }
 }

[alesj]

See what we're doing with Seam, WebBeans or JSFUnit,
where we dynamically add certain jars to deployment's classpath,
if we recognize that deployment as Seam/WB/JSFUnit specific.

Adding jboss-seam-int.jar:
http://anonsvn.jboss.org/repos/jbossas/projects/jboss-seam-int/trunk/microcontainer/src/main/java/org/jboss/seam/integration/microcontainer/deployers/SeamUrlIntegrationDeployer.java

Adding webbeans jars
http://anonsvn.jboss.org/repos/jbossas/projects/webbeans-ri-int/trunk/deployer/src/main/java/org/jboss/webbeans/integration/deployer/cl/WebBeansUrlIntegrationDeployer.java

JSFUnit
http://jsfunit.blogspot.com/2008/10/jsfunit-easy-way.html

[scao]

Thanks. Would you please let me know how to configure the deployer after I have the implementation? Can it load classes for ear class loading?
Where I have to configure SeamUrlIntegrationDeployer WebBeansUrlIntegrationDeployer? Do you have any sample configuration file?

[alesj]

"slc99" wrote:

Where I have to configure SeamUrlIntegrationDeployer WebBeansUrlIntegrationDeployer? Do you have any sample configuration file?

Text search the deployers/ directory (in JBossAS_5.1) for the two terms.