public interface ClassLoaderRepository
ClassLoader
s for use by the management servers,
allowing classes to be loaded by the first ClassLoader
that will do so. A class loader is added to the list
whenever a ClassLoader
instance is registered with
the management server, and it does not implement the
PrivateClassLoader
interface. They are removed when
unregistered. The first class loader in the list is always
the one which was used to load the management server itself.MBeanServerFactory
Modifier and Type | Method and Description |
---|---|
Class<?> |
loadClass(String name)
Attempts to load the given class using class loaders
supplied by the list.
|
Class<?> |
loadClassBefore(ClassLoader stop,
String name)
Attempts to load the given class using class loaders
supplied by the list, stopping when the specified
loader is reached.
|
Class<?> |
loadClassWithout(ClassLoader exclude,
String name)
Attempts to load the given class using class loaders
supplied by the list, excluding the one specified.
|
Class<?> loadClass(String name) throws ClassNotFoundException
ClassLoader.loadClass(String)
method of each class loader is called. If the method
returns successfully, then the returned Class
instance
is returned. If a ClassNotFoundException
is thrown,
then the next loader is tried. Any other exception thrown
by the method is passed back to the caller. This method
throws a ClassNotFoundException
itself if all the
class loaders listed prove fruitless.name
- the name of the class to load.ClassNotFoundException
- if all the class loaders fail
to load the class.Class<?> loadClassBefore(ClassLoader stop, String name) throws ClassNotFoundException
Attempts to load the given class using class loaders
supplied by the list, stopping when the specified
loader is reached. The ClassLoader.loadClass(String)
method of each class loader is called. If the method
returns successfully, then the returned Class
instance
is returned. If a ClassNotFoundException
is thrown,
then the next loader is tried. Any other exception thrown
by the method is passed back to the caller. This method
throws a ClassNotFoundException
itself if all the
class loaders listed prove fruitless.
This method is usually used by the class loader specified
by the stop
argument to load classes using the
loaders that appear before it in the list. By stopping when
the loader is reached, the deadlock that occurs when the loader
is merely skipped is avoided.
stop
- the class loader at which to stop, or null
to obtain the same behaviour as loadClass(String)
.name
- the name of the class to load.ClassNotFoundException
- if all the class loaders fail
to load the class.Class<?> loadClassWithout(ClassLoader exclude, String name) throws ClassNotFoundException
Attempts to load the given class using class loaders
supplied by the list, excluding the one specified.
The ClassLoader.loadClass(String)
method of each class loader is called. If the method
returns successfully, then the returned Class
instance
is returned. If a ClassNotFoundException
is thrown,
then the next loader is tried. Any other exception thrown
by the method is passed back to the caller. This method
throws a ClassNotFoundException
itself if all the
class loaders listed prove fruitless.
Note that this method may deadlock if called simultaneously
by two class loaders in the list.
loadClassBefore(ClassLoader, String)
should be used
in preference to this method to avoid this.
exclude
- the class loader to exclude, or null
to obtain the same behaviour as loadClass(String)
.name
- the name of the class to load.ClassNotFoundException
- if all the class loaders fail
to load the class.