public void computeImports() throws CoreException {
// some existing imports may valid and can be preserved
Vector preservedImports = new Vector(fImports.size());
// new imports
ArrayList newImports = new ArrayList();
IPluginModelBase model = null;
for (int i = 0; i < fPlugins.size(); i++) {
IFeaturePlugin fp = (IFeaturePlugin) fPlugins.get(i);
ModelEntry entry = PluginRegistry.findEntry(fp.getId());
if (entry == null) continue;
IPluginModelBase[] models = entry.getActiveModels();
for (int j = 0; j < models.length; j++) {
IPluginModelBase m = models[j];
if (fp.getVersion().equals(m.getPluginBase().getVersion())
|| fp.getVersion().equals("0.0.0")) // $NON-NLS-1$
model = m;
}
if (model != null) {
addPluginImports(preservedImports, newImports, model.getPluginBase());
if (model.isFragmentModel()) {
BundleDescription desc = model.getBundleDescription();
if (desc == null) continue;
HostSpecification hostSpec = desc.getHost();
String id = hostSpec.getName();
String version = null;
int match = IMatchRules.NONE;
VersionRange versionRange = hostSpec.getVersionRange();
if (!(versionRange == null || VersionRange.emptyRange.equals(versionRange))) {
version =
versionRange.getMinimum() != null ? versionRange.getMinimum().toString() : null;
match = PluginBase.getMatchRule(versionRange);
}
addNewDependency(id, version, match, preservedImports, newImports);
}
}
}
// preserve imports of features
for (int i = 0; i < fImports.size(); i++) {
IFeatureImport iimport = (IFeatureImport) fImports.get(i);
if (iimport.getType() == IFeatureImport.FEATURE) preservedImports.add(iimport);
}
// removed = old - preserved
Vector removedImports = ((Vector) fImports.clone());
removedImports.removeAll(preservedImports);
// perform remove
fImports = preservedImports;
if (removedImports.size() > 0) {
fireStructureChanged(
(IFeatureImport[]) removedImports.toArray(new IFeatureImport[removedImports.size()]),
IModelChangedEvent.REMOVE);
}
// perform add
if (newImports.size() > 0) {
fImports.addAll(newImports);
fireStructureChanged(
(IFeatureImport[]) newImports.toArray(new IFeatureImport[newImports.size()]),
IModelChangedEvent.INSERT);
}
}
/*
* get the loader proxy for a bundle description
*/
public final BundleLoaderProxy getLoaderProxy(BundleDescription source) {
BundleLoaderProxy sourceProxy = (BundleLoaderProxy) source.getUserObject();
if (sourceProxy == null) {
// may need to force the proxy to be created
long exportingID = source.getBundleId();
BundleHost exportingBundle = (BundleHost) bundle.getFramework().getBundle(exportingID);
if (exportingBundle == null) return null;
sourceProxy = exportingBundle.getLoaderProxy();
}
return sourceProxy;
}
public static void closeBundleLoader(BundleLoaderProxy proxy) {
if (proxy == null) return;
// First close the BundleLoader
BundleLoader loader = proxy.getBasicBundleLoader();
if (loader != null) loader.close();
proxy.setStale();
// if proxy is not null then make sure to unset user object
// associated with the proxy in the state
BundleDescription description = proxy.getBundleDescription();
description.setUserObject(null);
}
public synchronized KeyedHashSet getImportedSources(KeyedHashSet visited) {
if ((loaderFlags & FLAG_IMPORTSINIT) != 0) return importedSources;
BundleDescription bundleDesc = proxy.getBundleDescription();
ExportPackageDescription[] packages = bundleDesc.getResolvedImports();
if (packages != null && packages.length > 0) {
if (importedSources == null) importedSources = new KeyedHashSet(packages.length, false);
for (int i = 0; i < packages.length; i++) {
if (packages[i].getExporter() == bundleDesc)
continue; // ignore imports resolved to this bundle
PackageSource source = createExportPackageSource(packages[i], visited);
if (source != null) importedSources.add(source);
}
}
loaderFlags |= FLAG_IMPORTSINIT;
return importedSources;
}
/**
* Recursively adds the given {@link BundleDescription} and its dependents to the given {@link
* Set}
*
* @param desc the {@link BundleDescription} to compute dependencies for
* @param set the {@link Set} to collect results in
* @param includeOptional if optional dependencies should be included
* @param excludeFragments a collection of <b>fragment</b> bundle symbolic names to exclude from
* the dependency resolution
*/
private static void addBundleAndDependencies(
BundleDescription desc,
Set<String> set,
boolean includeOptional,
Set<String> excludeFragments) {
if (desc != null && set.add(desc.getSymbolicName())) {
BundleSpecification[] required = desc.getRequiredBundles();
for (int i = 0; i < required.length; i++) {
if (includeOptional || !required[i].isOptional()) {
addBundleAndDependencies(
(BundleDescription) required[i].getSupplier(),
set,
includeOptional,
excludeFragments);
}
}
ImportPackageSpecification[] importedPkgs = desc.getImportPackages();
for (int i = 0; i < importedPkgs.length; i++) {
ExportPackageDescription exporter =
(ExportPackageDescription) importedPkgs[i].getSupplier();
// Continue if the Imported Package is unresolved of the package is optional and don't want
// optional packages
if (exporter == null
|| (!includeOptional
&& Constants.RESOLUTION_OPTIONAL.equals(
importedPkgs[i].getDirective(Constants.RESOLUTION_DIRECTIVE)))) {
continue;
}
addBundleAndDependencies(exporter.getExporter(), set, includeOptional, excludeFragments);
}
BundleDescription[] fragments = desc.getFragments();
for (int i = 0; i < fragments.length; i++) {
if (!fragments[i].isResolved()) {
continue;
}
String id = fragments[i].getSymbolicName();
if (!excludeFragments.contains(id)) {
addBundleAndDependencies(fragments[i], set, includeOptional, excludeFragments);
}
}
HostSpecification host = desc.getHost();
if (host != null) {
addBundleAndDependencies(
(BundleDescription) host.getSupplier(), set, includeOptional, excludeFragments);
}
}
}
/**
* BundleLoader runtime constructor. This object is created lazily when the first request for a
* resource is made to this bundle.
*
* @param bundle Bundle object for this loader.
* @param proxy the BundleLoaderProxy for this loader.
* @exception org.osgi.framework.BundleException
*/
protected BundleLoader(BundleHost bundle, BundleLoaderProxy proxy) throws BundleException {
this.bundle = bundle;
this.proxy = proxy;
try {
bundle.getBundleData().open(); /* make sure the BundleData is open */
} catch (IOException e) {
throw new BundleException(Msg.BUNDLE_READ_EXCEPTION, e);
}
BundleDescription description = proxy.getBundleDescription();
// init the require bundles list.
BundleDescription[] required = description.getResolvedRequires();
if (required.length > 0) {
// get a list of re-exported symbolic names
HashSet reExportSet = new HashSet(required.length);
BundleSpecification[] requiredSpecs = description.getRequiredBundles();
if (requiredSpecs != null && requiredSpecs.length > 0)
for (int i = 0; i < requiredSpecs.length; i++)
if (requiredSpecs[i].isExported()) reExportSet.add(requiredSpecs[i].getName());
requiredBundles = new BundleLoaderProxy[required.length];
int[] reexported = new int[required.length];
int reexportIndex = 0;
for (int i = 0; i < required.length; i++) {
requiredBundles[i] = getLoaderProxy(required[i]);
if (reExportSet.contains(required[i].getSymbolicName())) reexported[reexportIndex++] = i;
}
if (reexportIndex > 0) {
reexportTable = new int[reexportIndex];
System.arraycopy(reexported, 0, reexportTable, 0, reexportIndex);
} else {
reexportTable = null;
}
requiredSources = new KeyedHashSet(10, false);
} else {
requiredBundles = null;
reexportTable = null;
requiredSources = null;
}
// init the provided packages set
ExportPackageDescription[] exports = description.getSelectedExports();
if (exports != null && exports.length > 0) {
exportedPackages =
Collections.synchronizedCollection(
exports.length > 10
? (Collection) new HashSet(exports.length)
: new ArrayList(exports.length));
initializeExports(exports, exportedPackages);
} else {
exportedPackages = Collections.synchronizedCollection(new ArrayList(0));
}
ExportPackageDescription substituted[] = description.getSubstitutedExports();
if (substituted.length > 0) {
substitutedPackages =
substituted.length > 10
? (Collection) new HashSet(substituted.length)
: new ArrayList(substituted.length);
for (int i = 0; i < substituted.length; i++)
substitutedPackages.add(substituted[i].getName());
} else {
substitutedPackages = null;
}
// This is the fastest way to access to the description for fragments since the
// hostdescription.getFragments() is slow
BundleFragment[] fragmentObjects = bundle.getFragments();
BundleDescription[] fragments =
new BundleDescription[fragmentObjects == null ? 0 : fragmentObjects.length];
for (int i = 0; i < fragments.length; i++)
fragments[i] = fragmentObjects[i].getBundleDescription();
// init the dynamic imports tables
if (description.hasDynamicImports()) addDynamicImportPackage(description.getImportPackages());
// ...and its fragments
for (int i = 0; i < fragments.length; i++)
if (fragments[i].isResolved() && fragments[i].hasDynamicImports())
addDynamicImportPackage(fragments[i].getImportPackages());
// Initialize the policy handler
String buddyList = null;
try {
buddyList = (String) bundle.getBundleData().getManifest().get(Constants.BUDDY_LOADER);
} catch (BundleException e) {
// do nothing; buddyList == null
}
policy =
buddyList != null
? new PolicyHandler(this, buddyList, bundle.getFramework().getPackageAdmin())
: null;
if (policy != null) policy.open(bundle.getFramework().getSystemBundleContext());
}