org.openmdx.kernel.application.deploy.spi
Class LightweightClassLoader

java.lang.Object
  java.lang.ClassLoader
      java.security.SecureClassLoader
          java.net.URLClassLoader
              org.openmdx.kernel.application.deploy.spi.LightweightClassLoader

All Implemented Interfaces:

MultiLineStringRepresentation

public class LightweightClassLoader
extends URLClassLoader
implements MultiLineStringRepresentation

Lightweight Class Loader

Constructor Summary

LightweightClassLoader(String type, String shortDescription, ClassLoader parent)
Constructor

LightweightClassLoader(String type, String shortDescription, ClassLoader parent, URL[] urls)
Constructor

Method Summary

void	addURLs(URL[] urls) Add a list of URLs to the lightweight class loader's search path, including libraries referred to by manifest class-path entires.
protected static URL	getImplementationURL(URL url) The Manifest is optional as well as its Implementation-URL attribute.
static Manifest	getManifest(File module) The Manifest is optional.
protected static Manifest	getManifest(String module) The Manifest is optional.
static Manifest	getManifest(URL module) The Manifest is optional.
static URL[]	getManifestClassPath(URL url) The Manifest is optional as well as its Class-Path attribute.
protected static URL	toCanonicalForm(URL url) Converts file URL to their canaonical form
String	toString()

Methods inherited from class java.net.URLClassLoader

addURL, definePackage, findClass, findResource, findResources, getPermissions, 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, 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, wait, wait, wait

Constructor Detail

LightweightClassLoader

public LightweightClassLoader(String type,
                              String shortDescription,
                              ClassLoader parent)

Constructor

Parameters:

type -

shortDescription -

parent -

urls -

LightweightClassLoader

public LightweightClassLoader(String type,
                              String shortDescription,
                              ClassLoader parent,
                              URL[] urls)
                       throws IOException

Constructor

Parameters:

type -

shortDescription -

parent -

urls -

Throws:

IOException

Method Detail

addURLs

public void addURLs(URL[] urls)
             throws IOException

Add a list of URLs to the lightweight class loader's search path, including libraries referred to by manifest class-path entires.

Parameters:

urls -

Throws:

IOException

toCanonicalForm

protected static URL toCanonicalForm(URL url)
                              throws IOException

Converts file URL to their canaonical form

Parameters:

url -

Returns:

Throws:

IOException

toString

public String toString()

Overrides:

toString in class Object

getManifest

public static Manifest getManifest(File module)
                            throws IOException

The Manifest is optional.

Parameters:

module -

Returns:

module's manifest; or null

Throws:

IOException

getManifest

protected static Manifest getManifest(String module)
                               throws IOException

The Manifest is optional.

Parameters:

module -

Returns:

module's manifest; or null

Throws:

IOException

getManifest

public static Manifest getManifest(URL module)
                            throws IOException

The Manifest is optional.

Parameters:

module -

Returns:

module's manifest; or null

Throws:

IOException

getManifestClassPath

public static URL[] getManifestClassPath(URL url)
                                  throws IOException

The Manifest is optional as well as its Class-Path attribute. Return an empty array if either is missing.

Parameters:

url -

Returns:

the manifest class path; never null.

Throws:

IOException

getImplementationURL

protected static URL getImplementationURL(URL url)
                                   throws IOException

The Manifest is optional as well as its Implementation-URL attribute. Return the original URL of either is missing

Parameters:

url -

Returns:

the manifest class path; never null.

Throws:

IOException