org.ops4j.pax.web.jsp

Class JasperClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

org.ops4j.pax.web.jsp.JasperClassLoader

All Implemented Interfaces:

Closeable, AutoCloseable

public class JasperClassLoader
extends URLClassLoader

Jasper enforces a URLClassLoader so he can lookup the jars in order to get the TLDs. This class loader will use the Bundle-ClassPath to get the list of classloaders and delegate class loading to a bundle class loader.

Since:

0.3.0 January 08, 2008

Author:

Alin Dreghiciu, Raul Kripalani, Marc Klinger - mklinger[at]nightlabs[dot]de

Constructor Summary

Constructors

Constructor and Description
JasperClassLoader(org.osgi.framework.Bundle bundle, ClassLoader parent)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
Enumeration<URL>	findResources(String name)
URL	getResource(String name) Delegate to bundle class loader.
Enumeration<URL>	getResources(String name) Delegate to bundle class loader.
URL[]	getURLs()
int	hashCode()
Class<?>	loadClass(String name) Delegate to bundle class loader.
List<URL>	scanBundlesInClassSpace(String directory, String filePattern, boolean recursive) Scans the imported and required bundles for matching resources.
String	toString()

Methods inherited from class java.net.URLClassLoader

addURL, close, definePackage, findClass, findResource, getPermissions, getResourceAsStream, 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, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, registerAsParallelCapable, resolveClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

JasperClassLoader

public JasperClassLoader(org.osgi.framework.Bundle bundle,
                         ClassLoader parent)

Method Detail

getResource

public URL getResource(String name)

Delegate to bundle class loader.

Overrides:

getResource in class ClassLoader

See Also:

BundleClassLoader.getResource(String)

getResources

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

Delegate to bundle class loader.

Overrides:

getResources in class ClassLoader

Throws:

IOException

See Also:

BundleClassLoader.getResources(String)

findResources

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

Overrides:

findResources in class URLClassLoader

Throws:

IOException

loadClass

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

Delegate to bundle class loader.

Overrides:

loadClass in class ClassLoader

Throws:

ClassNotFoundException

See Also:

ClassLoader.loadClass(String)

toString

public String toString()

Overrides:

toString in class Object

getURLs

public URL[] getURLs()

Overrides:

getURLs in class URLClassLoader

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

scanBundlesInClassSpace

public List<URL> scanBundlesInClassSpace(String directory,
                                         String filePattern,
                                         boolean recursive)

Scans the imported and required bundles for matching resources. Can be used to obtain references to TLD files, XML definition files, etc.

Parameters:

directory - the directory within the imported/required bundle where to perform the lookup (e.g. "META-INF/")

filePattern - the file pattern to lookup (e.g. "*.tld")

recursive - indicates whether the lookup should be recursive, i.e. if it will drill into child directories

Returns:

list of matching resources, URLs as returned by the framework's Bundle.findEntries(String, String, boolean) method