org.hotswap.agent.util.classloader

Interface ClassLoaderPatcher

All Known Implementing Classes:

ClassLoaderDefineClassPatcher, ClassLoaderURLPatcher

public interface ClassLoaderPatcher

Add agent classloader plugin classes to the application classloader.

This is necessary to allow direct call of app classes (typically library classes like Spring and Hibernate). It is not possible to call class in child classloader from parent classloader. Hence this patch redefines necessary classes in child classloader itself directly.

Author:

Jiri Bubnik

Method Summary

Modifier and Type	Method and Description
boolean	isPatchAvailable(ClassLoader classLoader) Check if the classloader can be patched.
void	patch(ClassLoader classLoaderFrom, String path, ClassLoader classLoaderTo, ProtectionDomain protectionDomain) Patch the classloader.

Method Detail

isPatchAvailable

boolean isPatchAvailable(ClassLoader classLoader)

Check if the classloader can be patched. Typically skip synthetic classloaders.

Parameters:

classLoader - classloader to check

Returns:

if true, call patch()

patch

void patch(ClassLoader classLoaderFrom,
           String path,
           ClassLoader classLoaderTo,
           ProtectionDomain protectionDomain)

Patch the classloader.

Parameters:

classLoaderFrom - classloader to load classes from

path - path to copy

classLoaderTo - classloader to copy classes to

protectionDomain - required protection in target classloader