[jboss-user] [JBoss Microcontainer Development] - Cannot load package from deployment that has dynamic imports

[Thomas Diesler]

Thomas Diesler [http://community.jboss.org/people/thomas.diesler%40jboss.com] created the discussion

"Cannot load package from deployment that has dynamic imports"

To view the discussion, visit: http://community.jboss.org/message/541003#541003

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The symptom is that we see WARN messages like this

09:04:13,595 WARN  [BaseDelegateLoader] Not getting package org.osgi.service.log from policy that has no classLoader: LazyFilteredDelegateLoader at a75737{factory=org.jboss.classloading.spi.dependency.policy.DynamicClassLoaderPolicyFactory at 4f0853 filter=<EVERYTHING>}
09:04:13,599 WARN  [BaseDelegateLoader] Not getting package org.osgi.service.log from policy that has no classLoader: LazyFilteredDelegateLoader at a75737{factory=org.jboss.classloading.spi.dependency.policy.DynamicClassLoaderPolicyFactory at 4f0853 filter=<EVERYTHING>}
09:04:13,727 WARN  [BaseDelegateLoader] Not getting package org.osgi.util.tracker from policy that has no classLoader: LazyFilteredDelegateLoader at a75737{factory=org.jboss.classloading.spi.dependency.policy.DynamicClassLoaderPolicyFactory at 4f0853 filter=<EVERYTHING>

The reason seems that the  http://fisheye.jboss.org/browse/JBossAS/projects/jboss-cl/tags/2.2.0.Alpha4/classloader/src/main/java/org/jboss/classloader/spi/base/BaseClassLoaderDomain.java?r=102335 BaseClassLoaderDomain uses this sematics in getPackage

1. // Try the before attempt
2. // Next we try the old "big ball of mud" model 
3. // Next we try the imports   
4. // Finally use any requesting classloader
5. // Try the after attempt

In step #3 the imports also include the dynamic imports (even the EVERYTHING aka '*' imports)
The  LazyFilteredDelegateLoader has no classloader associated and getPackage fails.

In OSGi dynamic imports are considered *after* the bundles embedded classpath.

I suggest we split getPackageFromImports in two variants and consider dynamic import between step #4 and #5

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