org.norther.tammi.acorn.net
Class URLClassLoader

java.lang.Object
  java.lang.ClassLoader
      java.security.SecureClassLoader
          java.net.URLClassLoader
              org.norther.tammi.acorn.net.URLClassLoader

Direct Known Subclasses:

AbstractLoader

public class URLClassLoader
extends URLClassLoader

Extends the standard URL class loader by providing assembly support for loading classes dynamically during run-time.

Version:

$Id: URLClassLoader.java,v 1.11 2009/11/04 09:09:23 cvsimp Exp $

Author:

Ilkka Priha

Constructor Summary

URLClassLoader()
Contructs a new loader.

URLClassLoader(ClassLoader parent)
Constructs a loader with a parent.

URLClassLoader(URL[] urls)
Contructs a new loader with URLs.

URLClassLoader(URL[] urls, ClassLoader parent)
Constructs a loader with URLs and a parent.

URLClassLoader(URL[] urls, ClassLoader parent, URLStreamHandlerFactory factory)
Constructs a loader with URLs, a parent and a stream handler factory.

Method Summary

Class<?>	defineClass(String name, org.objectweb.asm.ClassWriter cw) Defines a class by assembling it from the class writer.
<T> Class<? extends T>	defineSubclass(String name, Class<T> clazz, Class<?>... ifaces) Defines a subclass for a class with all super constructors.
<T> Class<? extends T>	defineSubclass(String name, Class<T> clazz, short access, Class<?>... ifaces) Defines a subclass for a class with all super constructors but modified access flags.

Methods inherited from class java.net.URLClassLoader

addURL, definePackage, findClass, findResource, findResources, getPermissions, getURLs, newInstance, newInstance

Methods inherited from class java.security.SecureClassLoader

defineClass, defineClass

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findLibrary, findLoadedClass, findSystemClass, getPackage, getPackages, getParent, getResource, getResourceAsStream, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, loadClass, resolveClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

URLClassLoader

public URLClassLoader()

Contructs a new loader.

URLClassLoader

public URLClassLoader(ClassLoader parent)

Constructs a loader with a parent.

Parameters:

parent - the parent class loader.

URLClassLoader

public URLClassLoader(URL[] urls)

Contructs a new loader with URLs.

Parameters:

urls - an array of URLs.

URLClassLoader

public URLClassLoader(URL[] urls,
                      ClassLoader parent)

Constructs a loader with URLs and a parent.

Parameters:

urls - an array of URLs.

parent - the parent class loader.

URLClassLoader

public URLClassLoader(URL[] urls,
                      ClassLoader parent,
                      URLStreamHandlerFactory factory)

Constructs a loader with URLs, a parent and a stream handler factory.

Parameters:

urls - an array of URLs.

parent - the parent class loader.

factory - the stream handler factory.

Method Detail

defineClass

public Class<?> defineClass(String name,
                            org.objectweb.asm.ClassWriter cw)
                     throws ClassFormatError

Defines a class by assembling it from the class writer.

Parameters:

name - the name of the class, or null if not known.

cw - the class writer.

Returns:

the defined class.

Throws:

ClassFormatError - if the definition is invalid.

defineSubclass

public <T> Class<? extends T> defineSubclass(String name,
                                             Class<T> clazz,
                                             Class<?>... ifaces)
                                  throws ClassFormatError

Defines a subclass for a class with all super constructors.

Type Parameters:

T - the superclass type.

Parameters:

name - the name of the class.

clazz - the superclass.

ifaces - optional interfaces.

Returns:

the defined class.

Throws:

ClassFormatError - if the definition is invalid.

defineSubclass

public <T> Class<? extends T> defineSubclass(String name,
                                             Class<T> clazz,
                                             short access,
                                             Class<?>... ifaces)
                                  throws ClassFormatError

Defines a subclass for a class with all super constructors but modified access flags.

Type Parameters:

T - the superclass type.

Parameters:

name - the name of the class.

clazz - the superclass.

access - access flags.

ifaces - optional interfaces.

Returns:

the defined class.

Throws:

ClassFormatError - if the definition is invalid.