org.eclipse.osgi.internal.loader
Class NullPackageSource

java.lang.Object
  org.eclipse.osgi.internal.loader.PackageSource
      org.eclipse.osgi.internal.loader.NullPackageSource

All Implemented Interfaces:

KeyedElement

public class NullPackageSource
extends PackageSource

This class is used to optimize finding provided-packages for a bundle. If the package cannot be found in a list of required bundles then this class is used to cache a null package source so that the search does not need to be done again.

Field Summary

Fields inherited from class org.eclipse.osgi.internal.loader.PackageSource

id

Method Summary

static NullPackageSource	getNullPackageSource(String name)
URL	getResource(String name)
Enumeration<URL>	getResources(String name)
SingleSourcePackage[]	getSuppliers()
boolean	isNullSource()
List<String>	listResources(String path, String filePattern)
Class<?>	loadClass(String name)
String	toString()

Methods inherited from class org.eclipse.osgi.internal.loader.PackageSource

compare, getId, getKey, getKeyHashCode, hasCommonSource, isFriend

Methods inherited from class java.lang.Object

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

Method Detail

getSuppliers

public SingleSourcePackage[] getSuppliers()

Specified by:

getSuppliers in class PackageSource

isNullSource

public boolean isNullSource()

Overrides:

isNullSource in class PackageSource

toString

public String toString()

Overrides:

toString in class Object

loadClass

public Class<?> loadClass(String name)

Specified by:

loadClass in class PackageSource

getResource

public URL getResource(String name)

Specified by:

getResource in class PackageSource

getResources

public Enumeration<URL> getResources(String name)

Specified by:

getResources in class PackageSource

getNullPackageSource

public static NullPackageSource getNullPackageSource(String name)

listResources

public List<String> listResources(String path,
                                  String filePattern)

Specified by:

listResources in class PackageSource