/**
* This will try and find a resource of the given name using the bundle from which was originally
* loaded the given class so as to try and detect if it is jarred. If <code>clazz</code> hasn't
* been loaded from a bundle class loader, we'll resort to the default class loader mechanism.
* This will only return <code>null</code> in the case where the resource at <code>resourcePath
* </code> cannot be located at all.
*
* @param clazz Class which class loader will be used to try and locate the resource.
* @param resourcePath Path of the resource we seek, relative to the class.
* @return The URL of the resource as we could locate it.
* @throws IOException This will be thrown if we fail to convert bundle-scheme URIs into
* file-scheme URIs.
*/
public static URL getResourceURL(Class<?> clazz, String resourcePath) throws IOException {
BundleContext context = AcceleoCommonPlugin.getDefault().getContext();
ServiceReference packageAdminReference =
context.getServiceReference(PackageAdmin.class.getName());
PackageAdmin packageAdmin = null;
if (packageAdminReference != null) {
packageAdmin = (PackageAdmin) context.getService(packageAdminReference);
}
URL resourceURL = null;
if (packageAdmin != null) {
Bundle bundle = packageAdmin.getBundle(clazz);
if (bundle != null) {
final String pathSeparator = "/"; // $NON-NLS-1$
// We found the appropriate bundle. We'll now try and determine whether the emtl is jarred
resourceURL = getBundleResourceURL(bundle, pathSeparator, resourcePath);
}
}
/*
* We couldn't locate either the bundle which loaded the class or the resource. Resort to the class
* loader and return null if it cannot locate the resource either.
*/
if (resourceURL == null) {
resourceURL = clazz.getResource(resourcePath);
}
if (packageAdminReference != null) {
context.ungetService(packageAdminReference);
}
return resourceURL;
}
/**
* Returns the bundle id of the bundle that contains the provided object, or <code>null</code> if
* the bundle could not be determined.
*/
public String getBundleId(Object object) {
if (bundleTracker == null) {
if (JobManager.DEBUG) JobMessages.message("Bundle tracker is not set"); // $NON-NLS-1$
return null;
}
PackageAdmin packageAdmin = (PackageAdmin) bundleTracker.getService();
if (object == null) return null;
if (packageAdmin == null) return null;
Bundle source = packageAdmin.getBundle(object.getClass());
if (source != null && source.getSymbolicName() != null) return source.getSymbolicName();
return null;
}
/**
* Return the bundle of the given class.
*
* @param clazz The class
* @return The bundle of the given class
* @since 3.1
*/
public static Bundle getBundle(Class<?> clazz) {
Bundle bundle = null;
BundleContext context = AcceleoCommonPlugin.getDefault().getContext();
ServiceReference packageAdminReference =
context.getServiceReference(PackageAdmin.class.getName());
PackageAdmin packageAdmin = null;
if (packageAdminReference != null) {
packageAdmin = (PackageAdmin) context.getService(packageAdminReference);
}
if (packageAdmin != null) {
bundle = packageAdmin.getBundle(clazz);
}
if (packageAdminReference != null) {
context.ungetService(packageAdminReference);
}
return bundle;
}
/**
* This can be used to check whether the given class is located in a dynamically installed bundle.
*
* @param clazz The class of which we need to determine the originating bundle.
* @return <code>true</code> if the given class has been loaded from a dynamic bundle, <code>false
* </code> otherwise.
*/
public boolean isInDynamicBundle(Class<?> clazz) {
BundleContext context = AcceleoCommonPlugin.getDefault().getContext();
ServiceReference packageAdminReference =
context.getServiceReference(PackageAdmin.class.getName());
PackageAdmin packageAdmin = null;
if (packageAdminReference != null) {
packageAdmin = (PackageAdmin) context.getService(packageAdminReference);
}
if (packageAdmin != null) {
Bundle bundle = packageAdmin.getBundle(clazz);
if (workspaceInstalledBundles.values().contains(bundle)) {
return true;
}
}
if (packageAdminReference != null) {
context.ungetService(packageAdminReference);
}
return false;
}
public Bundle getProvider(BundleContext context) {
ServiceReference sref = context.getServiceReference(PackageAdmin.class.getName());
PackageAdmin packageAdmin = (PackageAdmin) context.getService(sref);
Bundle provider = packageAdmin.getBundle(getClass());
return provider;
}
