org.eclipse.gemini.blueprint.io.internal.resolver

Class PackageAdminResolver

java.lang.Object

org.eclipse.gemini.blueprint.io.internal.resolver.PackageAdminResolver

All Implemented Interfaces:

DependencyResolver

public class PackageAdminResolver
extends java.lang.Object
implements DependencyResolver

PackageAdmin based dependency resolver.

This implementation uses the OSGi PackageAdmin service to determine dependencies between bundles. Since it's highly dependent on an external service, it might be better to use a listener based implementation for poor performing environments.

This implementation does consider required bundles.

Field Summary

Fields

Modifier and Type	Field and Description
private org.osgi.framework.BundleContext	bundleContext
private static org.apache.commons.logging.Log	log logger

Constructor Summary

Constructors

Constructor and Description
PackageAdminResolver(org.osgi.framework.BundleContext bundleContext)

Method Summary

Modifier and Type	Method and Description
private void	addExportedPackages(java.util.Map<org.osgi.framework.Bundle,java.util.List<java.lang.String>> map, org.osgi.framework.Bundle bundle, org.osgi.service.packageadmin.ExportedPackage[] pkgs) Adds the bundle exporting the given packages which are then imported by the owning bundle.
private void	addImportedBundle(java.util.Map<org.osgi.framework.Bundle,java.util.List<java.lang.String>> map, org.osgi.service.packageadmin.ExportedPackage expPackage) Adds the imported bundle to the map of packages.
ImportedBundle[]	getImportedBundles(org.osgi.framework.Bundle bundle) Returns the bundles imported by the given bundle.
private org.osgi.service.packageadmin.PackageAdmin	getPackageAdmin()

Methods inherited from class java.lang.Object

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

Field Detail

log

private static final org.apache.commons.logging.Log log

logger

bundleContext

private final org.osgi.framework.BundleContext bundleContext

Constructor Detail

PackageAdminResolver

public PackageAdminResolver(org.osgi.framework.BundleContext bundleContext)

Method Detail

getImportedBundles

public ImportedBundle[] getImportedBundles(org.osgi.framework.Bundle bundle)

Description copied from interface: DependencyResolver

Returns the bundles imported by the given bundle. It's up to the implementation to consider required bundles, bundle class-path and dynamic imports.

The returned array should not contain duplicates (each imported bundle should be present exactly once).

In general it is not expected to have knowledge about runtime loading (such as dynamic imports).

Specified by:

getImportedBundles in interface DependencyResolver

Parameters:

bundle - OSGi bundle for which imported bundles will be determined

Returns:

a not-null array of importing bundles

addImportedBundle

private void addImportedBundle(java.util.Map<org.osgi.framework.Bundle,java.util.List<java.lang.String>> map,
                               org.osgi.service.packageadmin.ExportedPackage expPackage)

Adds the imported bundle to the map of packages.

Parameters:

map -

bundle -

packageName -

addExportedPackages

private void addExportedPackages(java.util.Map<org.osgi.framework.Bundle,java.util.List<java.lang.String>> map,
                                 org.osgi.framework.Bundle bundle,
                                 org.osgi.service.packageadmin.ExportedPackage[] pkgs)

Adds the bundle exporting the given packages which are then imported by the owning bundle. This applies to special imports (such as Require-Bundle).

Parameters:

map -

bundle -

pkgs -

getPackageAdmin

private org.osgi.service.packageadmin.PackageAdmin getPackageAdmin()