Java Bundle.equals方法代碼示例

import org.osgi.framework.Bundle; //導入方法依賴的package包/類
/**
 * Get all the relevant packages that the EclipseLink JPA provider exports or persistence packages it uses itself. These are needed
 * so that the woven proxy (for runtime enhancement) can be used later on :)
 * 
 * Note that differently to OpenJPA the relevant classes are actually in more than just one bundle (org.eclipse.persistence.jpa and org.eclipse.persistence.core
 * at the time of this writing). Hence, we have to take more than just the packages of the JPA provider bundle into account ...
 * 
 * @param jpaBundle
 * @return
 */
private String[] getJPAPackages(Bundle jpaBundle) {
    Set<String> result = new HashSet<String>();

    for (Bundle b : context.getBundles()) {
        BundleWiring bw = b.adapt(BundleWiring.class);
        if (bw == null) {
            continue;
        }
        boolean isJpaBundle = b.equals(jpaBundle);
        List<BundleWire> wires = bw.getProvidedWires(BundleRevision.PACKAGE_NAMESPACE);
        for (BundleWire w : wires) {
            String pkgName = (String)w.getCapability().getAttributes().get(BundleRevision.PACKAGE_NAMESPACE);
            boolean add = isJpaBundle || pkgName.startsWith("org.eclipse.persistence");
            if (add) {
                result.add(getPkg(b, pkgName));
            }
        }
    }
    
    result.add(getPkg(context.getBundle(), "org.apache.aries.jpa.eclipselink.adapter.platform"));
    LOG.debug("Found JPA packages {}", result);
    return result.toArray(new String[0]);
}
 

import org.osgi.framework.Bundle; //導入方法依賴的package包/類
/**
 * Registers the namespace plugin handler if this bundle defines handler mapping or schema mapping resources.
 * 
 * <p/> This method considers only the bundle space and not the class space.
 * 
 * @param bundle target bundle
 * @param isLazyBundle indicator if the bundle analyzed is lazily activated
 */
public void maybeAddNamespaceHandlerFor(Bundle bundle, boolean isLazyBundle) {
	// Ignore system bundle
	if (OsgiBundleUtils.isSystemBundle(bundle)) {
		return;
	}

	// Ignore non-wired Spring DM bundles
	if ("org.eclipse.gemini.blueprint.core".equals(bundle.getSymbolicName())
			&& !bundle.equals(BundleUtils.getDMCoreBundle(context))) {
		return;
	}

	boolean debug = log.isDebugEnabled();
	boolean trace = log.isTraceEnabled();
	// FIXME: Blueprint uber bundle temporary hack
	// since embedded libraries are not discovered by findEntries and inlining them doesn't work
	// (due to resource classes such as namespace handler definitions)
	// we use getResource

	boolean hasHandlers = false, hasSchemas = false;

	if (trace) {
		log.trace("Inspecting bundle " + bundle + " for Spring namespaces");
	}
	// extender/RFC 124 bundle
	if (context.getBundle().equals(bundle)) {

		try {
			Enumeration<?> handlers = bundle.getResources(META_INF + SPRING_HANDLERS);
			Enumeration<?> schemas = bundle.getResources(META_INF + SPRING_SCHEMAS);

			hasHandlers = handlers != null;
			hasSchemas = schemas != null;

			if (hasHandlers && debug) {
				log.debug("Found namespace handlers: " + Collections.list(schemas));
			}
		} catch (IOException ioe) {
			log.warn("Cannot discover own namespaces", ioe);
		}
	} else {
		hasHandlers = bundle.findEntries(META_INF, SPRING_HANDLERS, false) != null;
		hasSchemas = bundle.findEntries(META_INF, SPRING_SCHEMAS, false) != null;
	}

	// if the bundle defines handlers
	if (hasHandlers) {

		if (trace)
			log.trace("Bundle " + bundle + " provides Spring namespace handlers...");

		if (isLazyBundle) {
			this.namespacePlugins.addPlugin(bundle, isLazyBundle, true);
		} else {
			// check type compatibility between the bundle's and spring-extender's spring version
			if (hasCompatibleNamespaceType(bundle)) {
				this.namespacePlugins.addPlugin(bundle, isLazyBundle, false);
			} else {
				if (debug)
					log.debug("Bundle [" + OsgiStringUtils.nullSafeNameAndSymName(bundle)
							+ "] declares namespace handlers but is not compatible with extender [" + extenderInfo
							+ "]; ignoring...");
			}
		}
	} else {
		// bundle declares only schemas, add it though the handlers might not be compatible...
		if (hasSchemas) {
			this.namespacePlugins.addPlugin(bundle, isLazyBundle, false);
			if (trace)
				log.trace("Bundle " + bundle + " provides Spring schemas...");
		}
	}
}
 

import org.osgi.framework.Bundle; //導入方法依賴的package包/類
public ImportedBundle[] getImportedBundles(Bundle bundle) {
	boolean trace = log.isTraceEnabled();

	PackageAdmin pa = getPackageAdmin();

	// create map with bundles as keys and a list of packages as value
	Map<Bundle, List<String>> importedBundles = new LinkedHashMap<Bundle, List<String>>(8);

	// 1. consider required bundles first

	// see if there are required bundle(s) defined
	String[] entries = OsgiHeaderUtils.getRequireBundle(bundle);

	// 1. if so, locate the bundles
	for (int i = 0; i < entries.length; i++) {
		String[] parsed = OsgiHeaderUtils.parseRequiredBundleString(entries[i]);
		// trim the strings just to be on the safe side (some implementations allows whitespaces, some don't)
		String symName = parsed[0].trim();
		String versionRange = parsed[1].trim();
		Bundle[] foundBundles = pa.getBundles(symName, versionRange);

		if (!ObjectUtils.isEmpty(foundBundles)) {
			Bundle requiredBundle = foundBundles[0];

			// find exported packages
			ExportedPackage[] exportedPackages = pa.getExportedPackages(requiredBundle);
			if (exportedPackages != null)
				addExportedPackages(importedBundles, requiredBundle, exportedPackages);
		}
		else {
			if (trace) {
				log.trace("Cannot find required bundle " + symName + "|" + versionRange);
			}
		}
	}

	// 2. determine imported bundles 
	// get all bundles
	Bundle[] bundles = bundleContext.getBundles();

	for (int i = 0; i < bundles.length; i++) {
		Bundle analyzedBundle = bundles[i];
		// if the bundle is already included (it's a required one), there's no need to look at it again
		if (!importedBundles.containsKey(analyzedBundle)) {
			ExportedPackage[] epa = pa.getExportedPackages(analyzedBundle);
			if (epa != null)
				for (int j = 0; j < epa.length; j++) {
					ExportedPackage exportedPackage = epa[j];
					Bundle[] importingBundles = exportedPackage.getImportingBundles();
					if (importingBundles != null)
						for (int k = 0; k < importingBundles.length; k++) {
							if (bundle.equals(importingBundles[k])) {
								addImportedBundle(importedBundles, exportedPackage);
							}
						}
				}
		}
	}

	List<ImportedBundle> importedBundlesList = new ArrayList<ImportedBundle>(importedBundles.size());

	for (Map.Entry<Bundle, List<String>> entry : importedBundles.entrySet()) {
		Bundle importedBundle = entry.getKey();
		List<String> packages = entry.getValue();
		importedBundlesList.add(new ImportedBundle(importedBundle,
			(String[]) packages.toArray(new String[packages.size()])));
	}

	return (ImportedBundle[]) importedBundlesList.toArray(new ImportedBundle[importedBundlesList.size()]);
}