Problems with java.lang.Class Objects as method arguments

The HashCodeCacheKeyGenerator generates in the GenerateArgumentHashCode-Mode the same key for all java.lang.Class object arguments. The problem corresponds to MOD-200, all fields in java.lang.Class are transient or static (see special case in ObjectOutputStream).

TestCase:

public class TestClass
{
public Class testClassArgument(Class clazz)

{ return clazz; }

}

public void testCashKey() throws SecurityException, NoSuchMethodException
{
TestClass testClass = new TestClass();
Method method = TestClass.class.getMethod("testClassArgument", new Class[]

{Class.class}

);

MethodInvocation mi0 = new ReflectiveMethodInvocation(null /* proxy has no test influence */, testClass, method, new Object[]

{String.class}

, TestClass.class, Collections.EMPTY_LIST);
MethodInvocation mi1 = new ReflectiveMethodInvocation(null /* proxy has no test influence */, testClass, method, new Object[]

{List.class}

, TestClass.class, Collections.EMPTY_LIST);

HashCodeCacheKeyGenerator keyGenerator = new HashCodeCacheKeyGenerator();
keyGenerator.setGenerateArgumentHashCode(true);

Serializable key0 = keyGenerator.generateKey(mi0);
Serializable key1 = keyGenerator.generateKey(mi1);

System.out.println("testClassArgument(String.class) (" + key0 + ")" + " != testClassArgument(List.class) (" + key1 + ")" );
assertFalse(key0.equals(key1));
}