Package de.iip_ecosphere.platform.support.plugins

Class ChildFirstClassLoader

java.lang.Object

java.lang.ClassLoader

de.iip_ecosphere.platform.support.plugins.ChildFirstClassLoader

All Implemented Interfaces:

IdentifyingClassloader

Direct Known Subclasses:

ChildFirstURLClassLoader

public class ChildFirstClassLoader
extends ClassLoader
implements IdentifyingClassloader

A delegating child-first classloader.

Author:

Stackoverflow, Holger Eichelberger, SSE

Field Summary

Fields

Modifier and Type	Field	Description
private ChildClassLoader	childClassLoader

Constructor Summary

Constructors

Constructor	Description
ChildFirstClassLoader(Function<FindClassClassLoader,ChildClassLoader> creator)	Creates a child-first classloader using the context class loader of the current thread as parent.
ChildFirstClassLoader(Function<FindClassClassLoader,ChildClassLoader> creator, ClassLoader parent)	Creates a child-first classloader.

Method Summary

Modifier and Type	Method	Description
boolean	amI(ClassLoader loader)	Returns whether this class loader or one of its child loaders corresponds to the given loader.
void	clearAssertionStatus()
URL	getResource(String name)
InputStream	getResourceAsStream(String name)
Enumeration<URL>	getResources(String name)
protected Class<?>	loadClass(String name, boolean resolve)
void	setClassAssertionStatus(String className, boolean enabled)
void	setDefaultAssertionStatus(boolean enabled)
void	setPackageAssertionStatus(String packageName, boolean enabled)
String	toString()

Methods inherited from class java.lang.ClassLoader

defineClass, defineClass, defineClass, defineClass, definePackage, findClass, findClass, findLibrary, findLoadedClass, findResource, findResource, findResources, findSystemClass, getClassLoadingLock, getDefinedPackage, getDefinedPackages, getName, getPackage, getPackages, getParent, getPlatformClassLoader, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, getUnnamedModule, isRegisteredAsParallelCapable, loadClass, registerAsParallelCapable, resolveClass, resources, setSigners

Methods inherited from class java.lang.Object

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

Field Details

childClassLoader

private ChildClassLoader childClassLoader

Constructor Details

ChildFirstClassLoader

public ChildFirstClassLoader(Function<FindClassClassLoader,ChildClassLoader> creator)

Creates a child-first classloader using the context class loader of the current thread as parent.

Parameters:

creator - a function creating the child classloader

ChildFirstClassLoader

public ChildFirstClassLoader(Function<FindClassClassLoader,ChildClassLoader> creator,
 ClassLoader parent)

Creates a child-first classloader.

Parameters:

creator - a function creating the child classloader

parent - the parent class loader

Method Details

loadClass

protected Class<?> loadClass(String name,
 boolean resolve)
                      throws ClassNotFoundException

Overrides:

loadClass in class ClassLoader

Throws:

ClassNotFoundException

getResource

public URL getResource(String name)

Overrides:

getResource in class ClassLoader

getResources

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

Overrides:

getResources in class ClassLoader

Throws:

IOException

getResourceAsStream

public InputStream getResourceAsStream(String name)

Overrides:

getResourceAsStream 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

setDefaultAssertionStatus

public void setDefaultAssertionStatus(boolean enabled)

Overrides:

setDefaultAssertionStatus in class ClassLoader

setPackageAssertionStatus

public void setPackageAssertionStatus(String packageName,
 boolean enabled)

Overrides:

setPackageAssertionStatus in class ClassLoader

amI

public boolean amI(ClassLoader loader)

Description copied from interface: IdentifyingClassloader

Returns whether this class loader or one of its child loaders corresponds to the given loader.

Specified by:

amI in interface IdentifyingClassloader

Parameters:

loader - the loader to check for

Returns:

true if this class loader or one of its child loaders corresponds, false else

toString

public String toString()

Overrides:

toString in class Object