com.werken.forehead
Class ForeheadClassLoader

java.lang.Object
  java.lang.ClassLoader
      java.security.SecureClassLoader
          java.net.URLClassLoader
              com.werken.forehead.ForeheadClassLoader

public class ForeheadClassLoader

extends java.net.URLClassLoader

Named, dynamically modifiable ClassLoader implementation.

Author:

bob mcwhirter, Jason van Zyl

See Also:

Forehead

Nested Class Summary

Nested classes inherited from class java.lang.ClassLoader

Field Summary

static java.net.URL[]	EMPTY_URL_ARRAY Simple empty URL[0] array.
private java.lang.String	name The name of this loader.

Fields inherited from class java.net.URLClassLoader

Fields inherited from class java.security.SecureClassLoader

Fields inherited from class java.lang.ClassLoader

Constructor Summary

ForeheadClassLoader(java.lang.ClassLoader parent, java.lang.String name)
Construct given a parent and a name.

Method Summary

void	addRepository(java.io.File repository) Add a new repository to the set of places this ClassLoader can look for classes to be loaded.
void	addRepository(java.lang.String repository) Add a new repository to the set of places this ClassLoader can look for classes to be loaded.
void	addURL(java.net.URL url) Append a URL to this loader's search path.
java.lang.String	getName() Retrieve the name of this ClassLoader.
java.lang.String	getResourceAsString(java.lang.String name) Find the resource with the given name, and return a String.
java.lang.String	toString() Produce output suitable for debugging.

Methods inherited from class java.net.URLClassLoader

definePackage, findClass, findResource, findResources, getPermissions, getURLs, newInstance, newInstance

Methods inherited from class java.security.SecureClassLoader

defineClass

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, 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

Field Detail

EMPTY_URL_ARRAY

public static final java.net.URL[] EMPTY_URL_ARRAY

Simple empty URL[0] array.

name

private java.lang.String name

The name of this loader.

Constructor Detail

ForeheadClassLoader

public ForeheadClassLoader(java.lang.ClassLoader parent,
                           java.lang.String name)

Construct given a parent and a name.

Parameters:

parent - The parent loader.

name - The name of this loader.

Method Detail

getName

public java.lang.String getName()

Retrieve the name of this ClassLoader.

Returns:

The name of this loader.

addURL

public void addURL(java.net.URL url)

Append a URL to this loader's search path.

Parameters:

url - The URL to append.

toString

public java.lang.String toString()

Produce output suitable for debugging.

Returns:

Output suitable for debugging.

getResourceAsString

public java.lang.String getResourceAsString(java.lang.String name)

Find the resource with the given name, and return a String. The search order is as described for getResource(), after checking to see if the resource data has been previously cached. If the resource cannot be found, return null.

Parameters:

name - Name of the resource to return a String for.

addRepository

public void addRepository(java.lang.String repository)

Add a new repository to the set of places this ClassLoader can look for classes to be loaded.

Parameters:

repository - Name of a source of classes to be loaded, such as a directory pathname, a JAR file pathname, or a ZIP file pathname. The parameter must be in the form of an URL.

Throws:

java.lang.IllegalArgumentException - if the specified repository is invalid or does not exist

addRepository

public void addRepository(java.io.File repository)

Add a new repository to the set of places this ClassLoader can look for classes to be loaded.

Parameters:

repository - Name of a source of classes to be loaded, such as a directory pathname, a JAR file pathname, or a ZIP file pathname. The parameter must be in the form of an URL.

Throws:

java.lang.IllegalArgumentException - if the specified repository is invalid or does not exist