org.eclipse.osgi.internal.baseadaptor
Class DevClassLoadingHook

java.lang.Object
  org.eclipse.osgi.internal.baseadaptor.DevClassLoadingHook

All Implemented Interfaces:

HookConfigurator, ClassLoadingHook, KeyedElement

public class DevClassLoadingHook
extends java.lang.Object
implements ClassLoadingHook, HookConfigurator, KeyedElement

Field Summary

static int	HASHCODE
static java.lang.String	KEY

Constructor Summary

DevClassLoadingHook()

Method Summary

boolean	addClassPathEntry(java.util.ArrayList cpEntries, java.lang.String cp, ClasspathManager hostmanager, BaseData sourcedata, java.security.ProtectionDomain sourcedomain) Gets called by a classpath manager when looking for ClasspathEntry objects.
void	addHooks(HookRegistry hookRegistry) Adds hooks to the specified hook registry.
boolean	compare(KeyedElement other) Compares this element with a specified element
BaseClassLoader	createClassLoader(java.lang.ClassLoader parent, ClassLoaderDelegate delegate, BundleProtectionDomain domain, BaseData data, java.lang.String[] bundleclasspath) Gets called by a base data during BundleData.createClassLoader(ClassLoaderDelegate, BundleProtectionDomain, String[]).
java.lang.String	findLibrary(BaseData data, java.lang.String libName) Gets called by a base data during BundleData.findLibrary(String).
java.lang.ClassLoader	getBundleClassLoaderParent() Gets called by the adaptor during FrameworkAdaptor.getBundleClassLoaderParent().
java.lang.Object	getKey() Returns the key for this element
int	getKeyHashCode() Returns the hash code of the key
void	initializedClassLoader(BaseClassLoader baseClassLoader, BaseData data) Gets called by a classpath manager at the end of ClasspathManager.initialize().
byte[]	processClass(java.lang.String name, byte[] classbytes, ClasspathEntry classpathEntry, BundleEntry entry, ClasspathManager manager) Gets called by a classpath manager before defining a class.

Methods inherited from class java.lang.Object

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

Field Detail

KEY

public static final java.lang.String KEY

HASHCODE

public static final int HASHCODE

Constructor Detail

DevClassLoadingHook

public DevClassLoadingHook()

Method Detail

processClass

public byte[] processClass(java.lang.String name,
                           byte[] classbytes,
                           ClasspathEntry classpathEntry,
                           BundleEntry entry,
                           ClasspathManager manager)

Description copied from interface: ClassLoadingHook

Gets called by a classpath manager before defining a class. This method allows a class loading hook to process the bytes of a class that is about to be defined.

Specified by:

processClass in interface ClassLoadingHook

Parameters:

name - the name of the class being defined

classbytes - the bytes of the class being defined

classpathEntry - the ClasspathEntry where the class bytes have been read from.

entry - the BundleEntry source of the class bytes

manager - the class path manager used to define the requested class

Returns:

a modified array of classbytes or null if the original bytes should be used.

addClassPathEntry

public boolean addClassPathEntry(java.util.ArrayList cpEntries,
                                 java.lang.String cp,
                                 ClasspathManager hostmanager,
                                 BaseData sourcedata,
                                 java.security.ProtectionDomain sourcedomain)

Description copied from interface: ClassLoadingHook

Gets called by a classpath manager when looking for ClasspathEntry objects. This method allows a classloading hook to add additional ClasspathEntry objects

Specified by:

addClassPathEntry in interface ClassLoadingHook

Parameters:

cpEntries - the list of ClasspathEntry objects currently available for the requested classpath

cp - the name of the requested classpath

hostmanager - the classpath manager the requested ClasspathEntry is for

sourcedata - the source bundle data of the requested ClasspathEntry

sourcedomain - the source domain of the requested ClasspathEntry

Returns:

true if a ClasspathEntry has been added to cpEntries

findLibrary

public java.lang.String findLibrary(BaseData data,
                                    java.lang.String libName)

Description copied from interface: ClassLoadingHook

Gets called by a base data during BundleData.findLibrary(String). A base data will call this method for each configured class loading hook until one class loading hook returns a non-null value. If no class loading hook returns a non-null value then the base data will return null.

Specified by:

findLibrary in interface ClassLoadingHook

Parameters:

data - the base data to find a native library for.

libName - the name of the native library.

Returns:

The absolute path name of the native library or null.

getBundleClassLoaderParent

public java.lang.ClassLoader getBundleClassLoaderParent()

Description copied from interface: ClassLoadingHook

Gets called by the adaptor during FrameworkAdaptor.getBundleClassLoaderParent(). The adaptor will call this method for each configured class loading hook until one class loading hook returns a non-null value. If no class loading hook returns a non-null value then the adaptor will perform the default behavior.

Specified by:

getBundleClassLoaderParent in interface ClassLoadingHook

Returns:

the parent classloader to be used by all bundle classloaders or null.

createClassLoader

public BaseClassLoader createClassLoader(java.lang.ClassLoader parent,
                                         ClassLoaderDelegate delegate,
                                         BundleProtectionDomain domain,
                                         BaseData data,
                                         java.lang.String[] bundleclasspath)

Description copied from interface: ClassLoadingHook

Gets called by a base data during BundleData.createClassLoader(ClassLoaderDelegate, BundleProtectionDomain, String[]). The BaseData will call this method for each configured class loading hook until one data hook returns a non-null value. If no class loading hook returns a non-null value then a default implemenation of BundleClassLoader will be created.

Specified by:

createClassLoader in interface ClassLoadingHook

Parameters:

parent - the parent classloader for the BundleClassLoader

delegate - the delegate for the bundle classloader

domain - the domian for the bundle classloader

data - the BundleData for the BundleClassLoader

bundleclasspath - the classpath for the bundle classloader

Returns:

a newly created bundle classloader

initializedClassLoader

public void initializedClassLoader(BaseClassLoader baseClassLoader,
                                   BaseData data)

Description copied from interface: ClassLoadingHook

Gets called by a classpath manager at the end of ClasspathManager.initialize(). The classpath manager will call this method for each configured class loading hook after it has been initialized.

Specified by:

initializedClassLoader in interface ClassLoadingHook

Parameters:

baseClassLoader - the newly created bundle classloader

data - the BundleData associated with the bundle classloader

addHooks

public void addHooks(HookRegistry hookRegistry)

Description copied from interface: HookConfigurator

Adds hooks to the specified hook registry.

Specified by:

addHooks in interface HookConfigurator

Parameters:

hookRegistry - the hook registry used to add hooks

compare

public boolean compare(KeyedElement other)

Description copied from interface: KeyedElement

Compares this element with a specified element

Specified by:

compare in interface KeyedElement

Parameters:

other - the element to compare with

Returns:

returns true if the specified element equals this element

getKey

public java.lang.Object getKey()

Description copied from interface: KeyedElement

Returns the key for this element

Specified by:

getKey in interface KeyedElement

Returns:

the key for this element

getKeyHashCode

public int getKeyHashCode()

Description copied from interface: KeyedElement

Returns the hash code of the key

Specified by:

getKeyHashCode in interface KeyedElement

Returns:

the hash code of the key