/**
* 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);
}
}
}
private Object[] getDependencies(BundleDescription desc) {
// use map to store dependencies so if Import-Package is supplied by same BundleDescription as
// supplier of Require-Bundle, it only shows up once
// Also, have to use BundleSpecficiation instead of BundleDescroption to show re-exported icon
// on re-exported Required-Bundles
// Have to use ImportPackageSpecification to determine if an import is optional and should be
// filtered.
HashMap<Object, Object> dependencies = new HashMap<Object, Object>();
BundleSpecification[] requiredBundles = desc.getRequiredBundles();
for (int i = 0; i < requiredBundles.length; i++) {
BaseDescription bd = requiredBundles[i].getSupplier();
if (bd != null) dependencies.put(bd, requiredBundles[i]);
else dependencies.put(requiredBundles[i], requiredBundles[i]);
}
ImportPackageSpecification[] importedPkgs = desc.getImportPackages();
for (int i = 0; i < importedPkgs.length; i++) {
BaseDescription bd = importedPkgs[i].getSupplier();
if (bd != null && bd instanceof ExportPackageDescription) {
BundleDescription exporter = ((ExportPackageDescription) bd).getExporter();
if (exporter != null) {
Object obj = dependencies.get(exporter);
if (obj == null) {
dependencies.put(exporter, importedPkgs[i]);
} else if (!Constants.RESOLUTION_OPTIONAL.equals(
importedPkgs[i].getDirective(Constants.RESOLUTION_DIRECTIVE))
&& obj instanceof ImportPackageSpecification
&& Constants.RESOLUTION_OPTIONAL.equals(
((ImportPackageSpecification) obj)
.getDirective(Constants.RESOLUTION_DIRECTIVE))) {
// if we have a non-optional Import-Package dependency on a bundle which we already
// depend on, check to make sure our
// current dependency is not optional. If it is, replace the optional dependency with
// the non-optional one
dependencies.put(exporter, importedPkgs[i]);
}
}
}
// ignore unresolved packages
}
// include fragments which are "linked" to this bundle
BundleDescription frags[] = desc.getFragments();
for (int i = 0; i < frags.length; i++) {
if (!frags[i].equals(fFragmentDescription)) dependencies.put(frags[i], frags[i]);
}
return dependencies.values().toArray();
}
/**
* Build the table of plug-in dependencies. Iterate over all the plug-ins in the plug-in registry
* and the cycle through the list of pre-requisites and create the parent/child relationships in
* the nodes.
*/
private Map getDependencyGraph() {
if (dependencyGraph != null) return dependencyGraph;
// Build up the dependency graph (see PluginDependencyGraphNode) so
// we have the information readily available for any plug-in.
State state = Platform.getPlatformAdmin().getState(false);
BundleDescription[] plugins = state.getBundles();
dependencyGraph = new HashMap();
for (int i = 0; i < plugins.length; i++) {
BundleDescription descriptor = plugins[i];
PluginDependencyGraphNode node =
(PluginDependencyGraphNode) dependencyGraph.get(new Long(descriptor.getBundleId()));
if (node == null) {
node = new PluginDependencyGraphNode(descriptor);
dependencyGraph.put(new Long(descriptor.getBundleId()), node);
}
// Cycle through the prerequisites
BundleSpecification[] requires = descriptor.getRequiredBundles();
for (int j = 0; j < requires.length; j++) {
BundleDescription childDesc = (BundleDescription) requires[j].getSupplier();
// if the child doesn't exist then move to the next child
if (childDesc == null) continue;
// if the child entry is not in the table yet then add it
PluginDependencyGraphNode childNode =
(PluginDependencyGraphNode) dependencyGraph.get(new Long(childDesc.getBundleId()));
if (childNode == null) {
childNode = new PluginDependencyGraphNode(childDesc);
dependencyGraph.put(new Long(childDesc.getBundleId()), childNode);
}
// Add the child to this node's children and set this node as an ancestor
// of the child node
node.addChild(childNode);
childNode.addAncestor(node);
}
}
return dependencyGraph;
}
/**
* 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());
}
