[infinispan-dev] Solution for failing Isolated query cache tests in Hibernate trunk

[Galder Zamarreno]

Hi all,

In Hibernate trunk, the following tests are failing:

In JBC 2LC provider:
MVCCIsolatedClassLoaderTest.testClassLoaderHandlingNamedQueryRegion
MVCCIsolatedClassLoaderTest.testClassLoaderHandlingStandardQueryCache

In Infinispan 2LC provider:
IsolatedClassLoaderTest.testClassLoaderHandlingNamedQueryRegion
IsolatedClassLoaderTest.testClassLoaderHandlingStandardQueryCache

They're failing because AccountHolder is being loaded with the system 
classloader rather than the SelectedClassnameClassLoader.

The reason for this is that as a result of 
http://opensource.atlassian.com/projects/hibernate/browse/HHH-2990, 
SerializationHelper.CustomObjectInputStream now takes the classloader in 
the constructor. And during the test, SerializableType.fromBytes passes 
null as classloader to this constructor. The null comes from 
getReturnedClass().getClassLoader() below, which has been added as a 
result of 2990.

	private Object fromBytes(byte[] bytes) throws SerializationException {
		return SerializationHelper.deserialize( bytes, 
getReturnedClass().getClassLoader() );
	}

Now, shouldn't we use Thread.currentThread().getContextClassLoader() 
instead of getReturnedClass().getClassLoader()? Previously, that's what 
would have happened. I dunno why getReturnedClass().getClassLoader() was 
added though.

I've just tested using Thread.currentThread().getContextClassLoader() 
change and the tests pass now. Steve?

Cheers,
-- 
Galder Zamarreño
Sr. Software Engineer
Infinispan, JBoss Cache