Package com.sun.enterprise.loader

Class ResourceLocator

java.lang.Object

com.sun.enterprise.loader.ResourceLocator

public class ResourceLocator
extends Object

This class covers the resource loading rules of GlassFish.

• Some resources can be overriden by the application (ie. services)
• Some applications may use the delegate attribute to prioritize their classloader over server's own resources.

Author:

David Matejcek

Constructor Summary

Constructors

Constructor	Description
ResourceLocator(URLClassLoader classLoader, ClassLoader delegate, boolean prioritizeDelegate)

Method Summary

Modifier and Type	Method	Description
Enumeration<URL>	getResources(String name)	Finds resources with the given name and returns enumeration providing their locations.
boolean	isOverridableResource(String name)

Methods inherited from class java.lang.Object

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

Constructor Details

ResourceLocator

public ResourceLocator(URLClassLoader classLoader,
 ClassLoader delegate,
 boolean prioritizeDelegate)

Parameters:

classLoader - - current classloader used

delegate - - delegate classloader, usually parent or system classloader

prioritizeDelegate - - true if the delegate should be used first. This rule is not applied for explicitly named resources which not only have higher priority than delegate's but they do override them. If they are present in current classloader, the delegate is then not used.

Method Details

isOverridableResource

public boolean isOverridableResource(String name)

Parameters:

name -

Returns:

true if the resource present in the current classloader can shadow parent's resource.

getResources

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

Finds resources with the given name and returns enumeration providing their locations.

Parameters:

name -

Returns:

Enumeration of URLs

Throws:

IOException