org.abstracthorizon.extend.server.deployment.support
Class ModuleClassLoader

java.lang.Object
  java.lang.ClassLoader
      org.abstracthorizon.extend.server.deployment.support.ModuleClassLoader

All Implemented Interfaces:

LocalClassLoader

public class ModuleClassLoader
extends ClassLoader
implements LocalClassLoader

Class loader for Module. It searches for class in current class loader and then in class loaders of all modules Module depends on.

Author:

Daniel Sendula

Nested Class Summary

protected class

ModuleClassLoader.Enumerations<T> Class that implements enumeration interface and enumerates through all enumeration passed to it

Field Summary

protected Module	context Context this class loader depends on
protected ClassLoader	serverClassLoader Top level - server's class loader
protected boolean	useThreadContextLoader Should module class loader use thread's context class loader in searching for the resource

Constructor Summary

ModuleClassLoader(ClassLoader parent, Module context)
Constructor

Method Summary

protected Set<Module>	collectAllModules()
protected void	collectAllModules(Module module, Set<Module> modules)
Class<?>	findClass(String name) Searches for the class in dependent modules and server's class loader at the end.
URL	findResource(String name) Searches for resource in dependent modules and server's class loader at the end.
Enumeration<URL>	findResources(String name) Searches for resources in dependent modules and server's class loader at the end.
URL	getLocalResource(String name)
Enumeration<URL>	getLocalResources(String name)
Module	getModule() Returns module this class loader belongs to
ClassLoader	getServerClassLoader() Returns server's class loader
boolean	getUseThreadClassLoader() Returns should this class loader use context class loader or not
Class<?>	loadLocalClass(String name)
void	setServerClassLoader(ClassLoader serverClassLoader) Sets server's class loader
void	setUserThreadClassLoader(boolean useThreadContextLoader) Sets should this class loader use context class loader or not

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

Field Detail

context

protected Module context

Context this class loader depends on

serverClassLoader

protected ClassLoader serverClassLoader

Top level - server's class loader

useThreadContextLoader

protected boolean useThreadContextLoader

Should module class loader use thread's context class loader in searching for the resource

Constructor Detail

ModuleClassLoader

public ModuleClassLoader(ClassLoader parent,
                         Module context)

Constructor

Parameters:

parent - parent class loader

context - module this class loader belongs to.

Method Detail

getUseThreadClassLoader

public boolean getUseThreadClassLoader()

Returns should this class loader use context class loader or not

Returns:

true if this class loader should use context class loader or not

setUserThreadClassLoader

public void setUserThreadClassLoader(boolean useThreadContextLoader)

Sets should this class loader use context class loader or not

Parameters:

useThreadContextLoader - flag

findClass

public Class<?> findClass(String name)
                   throws ClassNotFoundException

Searches for the class in dependent modules and server's class loader at the end.

Overrides:

findClass in class ClassLoader

Parameters:

name - class name

Throws:

ClassNotFoundException

findResource

public URL findResource(String name)

Searches for resource in dependent modules and server's class loader at the end.

Overrides:

findResource in class ClassLoader

Parameters:

name - resource name

findResources

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

Searches for resources in dependent modules and server's class loader at the end.

Overrides:

findResources in class ClassLoader

Parameters:

name - resource name

Returns:

enumeration containing all URLs for given resource name

Throws:

IOException

collectAllModules

protected Set<Module> collectAllModules()

collectAllModules

protected void collectAllModules(Module module,
                                 Set<Module> modules)

getModule

public Module getModule()

Returns module this class loader belongs to

Returns:

module this class loader belongs to

getServerClassLoader

public ClassLoader getServerClassLoader()

Returns server's class loader

Returns:

server's class loader

setServerClassLoader

public void setServerClassLoader(ClassLoader serverClassLoader)

Sets server's class loader

Parameters:

serverClassLoader - server's class loader

getLocalResource

public URL getLocalResource(String name)

Specified by:

getLocalResource in interface LocalClassLoader

getLocalResources

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

Specified by:

getLocalResources in interface LocalClassLoader

Throws:

IOException

loadLocalClass

public Class<?> loadLocalClass(String name)
                        throws ClassNotFoundException

Specified by:

loadLocalClass in interface LocalClassLoader

Throws:

ClassNotFoundException