LoadTimeWeaver which uses reflection to delegate to an underlying ClassLoader
with well-known transformation hooks. The underlying ClassLoader is expected to
support the following weaving methods (as defined in the
LoadTimeWeaver interface):
public void addTransformer(java.lang.instrument.ClassFileTransformer):
for registering the given ClassFileTransformer on this ClassLoader
public ClassLoader getThrowawayClassLoader():
for obtaining a throwaway class loader for this ClassLoader (optional;
ReflectiveLoadTimeWeaver will fall back to a SimpleThrowawayClassLoader if
that method isn't available)
Please note that the above methods must reside in a class that is
publicly accessible, although the class itself does not have to be visible
to the application's class loader.
The reflective nature of this LoadTimeWeaver is particularly useful when the
underlying class loader implementation is loaded in a different class loader
(such as the application server's class loader which is not visible to the
web application). There is no direct API dependency between this LoadTimeWeaver
adapter and the underlying ClassLoader, just a 'loose' method contract.
This is the LoadTimeWeaver to use in combination with Spring's
org.springframework.instrument.classloading.tomcat.TomcatInstrumentableClassLoader .
author:
Costin Leau
author:
Juergen Hoeller
since:
2.0
See Also: ReflectiveLoadTimeWeaver.addTransformer(java.lang.instrument.ClassFileTransformer)
See Also: ReflectiveLoadTimeWeaver.getThrowawayClassLoader()
See Also: SimpleThrowawayClassLoader
See Also: org.springframework.instrument.classloading.tomcat.TomcatInstrumentableClassLoader | 