org.jboss.classloader.spi.base
Class BaseClassLoaderSystem

java.lang.Object
  org.jboss.classloader.spi.base.BaseClassLoaderSystem

Direct Known Subclasses:

ClassLoaderSystem

public abstract class BaseClassLoaderSystem
extends Object

Base ClassLoaderSystem.

Version:

$Revision: 1.1 $

Author:

Adrian Brock

Constructor Summary

BaseClassLoaderSystem()

Method Summary

protected void	afterRegisterClassLoader(ClassLoader classLoader) After register classloader
protected void	afterUnregisterClassLoader(ClassLoader classLoader) After unregister classloader
protected void	beforeRegisterClassLoader(ClassLoader classLoader) Before register classloader
protected void	beforeUnregisterClassLoader(ClassLoader classLoader) Before unregister classloader
protected BaseClassLoader	createClassLoader(ClassLoaderPolicy policy) Create a classloader for the given policy
protected ClassLoader	registerClassLoaderPolicy(BaseClassLoaderDomain domain, ClassLoaderPolicy policy) Register a policy with a domain
protected void	registerDomain(BaseClassLoaderDomain domain) Register a domain
String	toLongString() A long version of toString()
protected void	toLongString(StringBuilder builder) For subclasses to add information for toLongString()
String	toString()
protected byte[]	transform(ClassLoader classLoader, String className, byte[] byteCode, ProtectionDomain protectionDomain) Transform the byte code
protected void	unregisterClassLoader(ClassLoader classLoader) Unregister a policy with a domain
protected void	unregisterClassLoaderPolicy(ClassLoaderPolicy policy) Unregister a policy with a domain
protected void	unregisterDomain(BaseClassLoaderDomain domain) Unregister a domain

Methods inherited from class java.lang.Object

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

Constructor Detail

BaseClassLoaderSystem

public BaseClassLoaderSystem()

Method Detail

toLongString

public String toLongString()

A long version of toString()

Returns:

the long string

toLongString

protected void toLongString(StringBuilder builder)

For subclasses to add information for toLongString()

Parameters:

builder - the builder

toString

public String toString()

Overrides:

toString in class Object

registerDomain

protected void registerDomain(BaseClassLoaderDomain domain)

Register a domain

Parameters:

domain - the domain to register

Throws:

IllegalArgumentException - for a null domain

unregisterDomain

protected void unregisterDomain(BaseClassLoaderDomain domain)

Unregister a domain

Parameters:

domain - the domain to unregister

Throws:

IllegalArgumentException - for a null domain

registerClassLoaderPolicy

protected ClassLoader registerClassLoaderPolicy(BaseClassLoaderDomain domain,
                                                ClassLoaderPolicy policy)

Register a policy with a domain

Parameters:

domain - the domain

policy - the policy

Returns:

the classloader

Throws:

IllegalArgumentException - if a parameter is null

IllegalStateException - if the policy is already registered with a domain

unregisterClassLoaderPolicy

protected void unregisterClassLoaderPolicy(ClassLoaderPolicy policy)

Unregister a policy with a domain

Parameters:

policy - the policy

Throws:

IllegalArgumentException - if a parameter is null

IllegalStateException - if the policy is not registered with the domain

unregisterClassLoader

protected void unregisterClassLoader(ClassLoader classLoader)

Unregister a policy with a domain

Parameters:

classLoader - the class loader

Throws:

IllegalArgumentException - if a parameter is null

IllegalStateException - if the policy is not registered with the domain

createClassLoader

protected BaseClassLoader createClassLoader(ClassLoaderPolicy policy)

Create a classloader for the given policy

Parameters:

policy - the policy

Returns:

the classloader

Throws:

IllegalArgumentException - for a null policy

beforeRegisterClassLoader

protected void beforeRegisterClassLoader(ClassLoader classLoader)

Before register classloader

Parameters:

classLoader - the classloader

afterRegisterClassLoader

protected void afterRegisterClassLoader(ClassLoader classLoader)

After register classloader

Parameters:

classLoader - the classloader

beforeUnregisterClassLoader

protected void beforeUnregisterClassLoader(ClassLoader classLoader)

Before unregister classloader

Parameters:

classLoader - the classloader

afterUnregisterClassLoader

protected void afterUnregisterClassLoader(ClassLoader classLoader)

After unregister classloader

Parameters:

classLoader - the classloader

transform

protected byte[] transform(ClassLoader classLoader,
                           String className,
                           byte[] byteCode,
                           ProtectionDomain protectionDomain)
                    throws Exception

Transform the byte code

By default this does nothing

Parameters:

classLoader - the classLoader

className - the class name

byteCode - the byte code

protectionDomain - the protection domain

Returns:

the transformed byte code

Throws:

Exception - for any error