org.mortbay.jetty.webapp

Class WebAppClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

org.mortbay.jetty.webapp.WebAppClassLoader

All Implemented Interfaces:

Closeable, AutoCloseable

public class WebAppClassLoader
extends URLClassLoader

ClassLoader for HttpContext. Specializes URLClassLoader with some utility and file mapping methods. This loader defaults to the 2.3 servlet spec behaviour where non system classes are loaded from the classpath in preference to the parent loader. Java2 compliant loading, where the parent loader always has priority, can be selected with the WebAppContext.setParentLoaderPriority(boolean) method. If no parent class loader is provided, then the current thread context classloader will be used. If that is null then the classloader that loaded this class is used as the parent.

Author:

Greg Wilkins (gregw)

Constructor Summary

Constructors

Constructor and Description
WebAppClassLoader(ClassLoader parent, WebAppContext context) Constructor.
WebAppClassLoader(WebAppContext context) Constructor.

Method Summary

Modifier and Type	Method and Description
void	addClassPath(String classPath)
void	addJars(Resource lib) Add elements to the class path for the context from the jar and zip files found in the specified resource.
void	destroy()
ContextHandler	getContext()
String	getName()
PermissionCollection	getPermissions(CodeSource cs)
URL	getResource(String name)
boolean	isServerPath(String name)
boolean	isSystemPath(String name)
Class	loadClass(String name)
protected Class	loadClass(String name, boolean resolve)
void	setName(String name)
String	toString()

Methods inherited from class java.net.URLClassLoader

addURL, close, definePackage, findClass, findResource, findResources, getResourceAsStream, 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, getClassLoadingLock, getPackage, getPackages, getParent, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, registerAsParallelCapable, resolveClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object

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

Constructor Detail

WebAppClassLoader

public WebAppClassLoader(WebAppContext context)
                  throws IOException

Constructor.

Throws:

IOException

WebAppClassLoader

public WebAppClassLoader(ClassLoader parent,
                         WebAppContext context)
                  throws IOException

Constructor.

Throws:

IOException

Method Detail

getName

public String getName()

Returns:

the name of the classloader

setName

public void setName(String name)

Parameters:

name - the name of the classloader

getContext

public ContextHandler getContext()

addClassPath

public void addClassPath(String classPath)
                  throws IOException

Parameters:

classPath - Comma or semicolon separated path of filenames or URLs pointing to directories or jar files. Directories should end with '/'.

Throws:

IOException

addJars

public void addJars(Resource lib)

Add elements to the class path for the context from the jar and zip files found in the specified resource.

Parameters:

lib - the resource that contains the jar and/or zip files.

append - true if the classpath entries are to be appended to any existing classpath, or false if they replace the existing classpath.

See Also:

#setClassPath(String)

destroy

public void destroy()

getPermissions

public PermissionCollection getPermissions(CodeSource cs)

Overrides:

getPermissions in class URLClassLoader

getResource

public URL getResource(String name)

Overrides:

getResource in class ClassLoader

isServerPath

public boolean isServerPath(String name)

isSystemPath

public boolean isSystemPath(String name)

loadClass

public Class loadClass(String name)
                throws ClassNotFoundException

Overrides:

loadClass in class ClassLoader

Throws:

ClassNotFoundException

loadClass

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

Overrides:

loadClass in class ClassLoader

Throws:

ClassNotFoundException

toString

public String toString()

Overrides:

toString in class Object