com.atlassian.plugin.util

Class ChainingClassLoader

java.lang.Object

java.lang.ClassLoader

com.atlassian.plugin.util.ChainingClassLoader

public class ChainingClassLoader
extends ClassLoader

A class loader that delegates to a list of class loaders. The order is important as classes and resources will be loaded from the first classloader that can load them. This class is optimized for a small number of classloaders.

Since:

2.6.0

Constructor Summary

Constructors

Constructor and Description
ChainingClassLoader(ClassLoader... classLoaders) Constructs a chaining classloader
ChainingClassLoader(Map<String,String> resourceRedirects, ClassLoader... classLoaders) Constructs a classloader that overrides certain resources

Method Summary

Modifier and Type	Method and Description
void	clearAssertionStatus()
URL	getResource(String name)
InputStream	getResourceAsStream(String name)
Enumeration<URL>	getResources(String name)
Class	loadClass(String name)
void	setClassAssertionStatus(String className, boolean enabled)
void	setDefaultAssertionStatus(boolean enabled)
void	setPackageAssertionStatus(String packageName, boolean enabled)

Methods inherited from class java.lang.ClassLoader

defineClass, defineClass, defineClass, defineClass, definePackage, findClass, findLibrary, findLoadedClass, findResource, findResources, findSystemClass, getClassLoadingLock, getPackage, getPackages, getParent, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, registerAsParallelCapable, resolveClass, setSigners

Methods inherited from class java.lang.Object

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

Constructor Detail

ChainingClassLoader

public ChainingClassLoader(ClassLoader... classLoaders)

Constructs a chaining classloader

Parameters:

classLoaders - The classloaders to delegate to, in order

ChainingClassLoader

public ChainingClassLoader(Map<String,String> resourceRedirects,
                           ClassLoader... classLoaders)

Constructs a classloader that overrides certain resources

Parameters:

resourceRedirects - The map of resources to redirect

classLoaders - The classloaders to delegate to, in order

Method Detail

loadClass

public Class loadClass(String name)
                throws ClassNotFoundException

Overrides:

loadClass in class ClassLoader

Throws:

ClassNotFoundException

getResources

public Enumeration<URL> getResources(String name)
                              throws IOException

Overrides:

getResources in class ClassLoader

Throws:

IOException

getResource

public URL getResource(String name)

Overrides:

getResource in class ClassLoader

getResourceAsStream

public InputStream getResourceAsStream(String name)

Overrides:

getResourceAsStream in class ClassLoader

setDefaultAssertionStatus

public void setDefaultAssertionStatus(boolean enabled)

Overrides:

setDefaultAssertionStatus in class ClassLoader

setPackageAssertionStatus

public void setPackageAssertionStatus(String packageName,
                                      boolean enabled)

Overrides:

setPackageAssertionStatus in class ClassLoader

setClassAssertionStatus

public void setClassAssertionStatus(String className,
                                    boolean enabled)

Overrides:

setClassAssertionStatus in class ClassLoader

clearAssertionStatus

public void clearAssertionStatus()

Overrides:

clearAssertionStatus in class ClassLoader