[jboss-dev-forums] [Design of POJO Server] - Re: JBAS-5895; Processing too many classes

[alesj]

"alesj" wrote : 
  | Looks like ear's lib (or whatever user defines as 'lib') 
  | should be always strictly excluded in annotation scanning visitor?
I've hacked something of the following,
which I think should/could do the trick:

  | public class EarLibExcludeDeployer extends AbstractSimpleVFSRealDeployer<JBossAppMetaData>
  | {
  |    public EarLibExcludeDeployer()
  |    {
  |       super(JBossAppMetaData.class);
  |       setStage(DeploymentStages.POST_CLASSLOADER);
  |       setOutputs(ResourceFilter.class + ".recurse");
  |    }
  | 
  |    public void deploy(VFSDeploymentUnit unit, JBossAppMetaData jBossAppMetaData) throws DeploymentException
  |    {
  |       if (unit.isTopLevel() == false)
  |          return;
  | 
  |       try
  |       {
  |          VirtualFile root = unit.getRoot();
  |          String libDir = jBossAppMetaData.getLibraryDirectory();
  |          if (libDir == null || libDir.length() == 0) // take 'lib' even on empty
  |             libDir = "lib";
  |          VirtualFile lib = root.getChild(libDir);
  |          if (lib != null)
  |          {
  |             ResourceFilter recurseFilter = new UrlExcludeResourceFilter(lib.toURL());
  |             unit.addAttachment(ResourceFilter.class + ".recurse", recurseFilter, ResourceFilter.class);
  |          }
  |       }
  |       catch (Exception e)
  |       {
  |          throw DeploymentException.rethrowAsDeploymentException("Cannot exclude ear's lib.", e);
  |       }
  |    }
  | 
  |    /**
  |     * Do exclude based on url.
  |     */
  |    private class UrlExcludeResourceFilter implements ResourceFilter
  |    {
  |       private URL url;
  | 
  |       private UrlExcludeResourceFilter(URL url)
  |       {
  |          if (url == null)
  |             throw new IllegalArgumentException("Null url");
  |          this.url = url;
  |       }
  | 
  |       public boolean accepts(ResourceContext rc)
  |       {
  |          return url.equals(rc.getUrl()) == false;
  |       }
  |    }
  | }
  | 
Where this recurse ResourceFilter would 
then later on be picked up by FilteredAnnotationEnvironmentDeployer.


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