org.eclipse.gemini.blueprint.context.support.internal.classloader

Class CachingBundleClassLoaderFactory

java.lang.Object

org.eclipse.gemini.blueprint.context.support.internal.classloader.CachingBundleClassLoaderFactory

All Implemented Interfaces:

BundleClassLoaderFactory

class CachingBundleClassLoaderFactory
extends java.lang.Object
implements BundleClassLoaderFactory

Default implementation for BundleClassLoaderFactory.

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.Map<org.osgi.framework.Bundle,java.util.Map<java.lang.Object,java.lang.ref.WeakReference<java.lang.ClassLoader>>>	cache bundle -> map of class loaders (as a bundle can be refreshed)
private static java.lang.String	DELIMITER

Constructor Summary

Constructors

Constructor and Description
CachingBundleClassLoaderFactory()

Method Summary

Modifier and Type	Method and Description
private java.lang.ClassLoader	createBundleClassLoader(org.osgi.framework.Bundle bundle)
java.lang.ClassLoader	createClassLoader(org.osgi.framework.Bundle bundle) Creates a class loader for the given bundle.
private java.lang.Object	createKeyFor(org.osgi.framework.Bundle bundle) Creates a key for the given bundle.

Methods inherited from class java.lang.Object

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

Field Detail

DELIMITER

private static final java.lang.String DELIMITER

See Also:

Constant Field Values

cache

private final java.util.Map<org.osgi.framework.Bundle,java.util.Map<java.lang.Object,java.lang.ref.WeakReference<java.lang.ClassLoader>>> cache

bundle -> map of class loaders (as a bundle can be refreshed)

Constructor Detail

CachingBundleClassLoaderFactory

CachingBundleClassLoaderFactory()

Method Detail

createClassLoader

public java.lang.ClassLoader createClassLoader(org.osgi.framework.Bundle bundle)

Description copied from interface: BundleClassLoaderFactory

Creates a class loader for the given bundle.

Specified by:

createClassLoader in interface BundleClassLoaderFactory

Parameters:

bundle - OSGi bundle

Returns:

associated class loader

createKeyFor

private java.lang.Object createKeyFor(org.osgi.framework.Bundle bundle)

Creates a key for the given bundle. This is needed since the bundle can be updated or refreshed and thus can have different class loaders during its lifetime which are not reflected in its identity. Additionally, the given key will behave the same across the OSGi implementations and provide weak reference semantics.

Parameters:

bundle - OSGi bundle

Returns:

key generated for the given bundle

createBundleClassLoader

private java.lang.ClassLoader createBundleClassLoader(org.osgi.framework.Bundle bundle)