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:

Cloneable

public class WebAppClassLoader
extends URLClassLoader
implements Cloneable

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

WebAppClassLoader(ClassLoader parent, WebAppContext context)
Constructor.

WebAppClassLoader(WebAppContext context)
Constructor.

Method Summary

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.
Object	clone()
void	destroy()
WebAppContext	getContext()
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)
String	toString()

Methods inherited from class java.net.URLClassLoader

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

Methods inherited from class java.lang.Object

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

clone

public Object clone()
             throws CloneNotSupportedException

Overrides:

clone in class Object

Throws:

CloneNotSupportedException

getContext

public WebAppContext 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