Examples of org.osgi.framework.Bundle.loadClass()

org.osgi.framework.Bundle.loadClass()
Loads the specified class using this bundle's class loader.
If this bundle is a fragment bundle then this method must throw a ClassNotFoundException.
If this bundle's state is INSTALLED, this method must attempt to resolve this bundle before attempting to load the class.
If this bundle cannot be resolved, a Framework event of type {@link FrameworkEvent#ERROR} is fired containing aBundleException with details of the reason this bundle could not be resolved. This method must then throw a ClassNotFoundException.
If this bundle's state is UNINSTALLED, then an IllegalStateException is thrown. @param name The name of the class to load. @return The Class object for the requested class. @throws ClassNotFoundException If no such class can be found orif this bundle is a fragment bundle or if the caller does not have the appropriate AdminPermission[this,CLASS], and the Java Runtime Environment supports permissions. @throws IllegalStateException If this bundle has beenuninstalled. @since 1.3

        // Get the callback-handler from the deployment descriptor
        if (appClient.getCallbackHandler() != null) {
            String cls = appClient.getCallbackHandler();
            Class<?> clas;
            try {
                clas = bundle.loadClass(cls.trim());
            }
            catch (ClassNotFoundException e) {
                throw new DeploymentException("AppClientModuleBuilder: Could not load callback-handler class: " + cls, e);
            }
            classes.add(clas);

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            //Handle the role permissions and webservices on the servlets.
            Map<String, AbstractName> webServices = new HashMap<String, AbstractName>();
            Class<?> baseServletClass;
            try {
                baseServletClass = webBundle.loadClass(Servlet.class.getName());
            } catch (ClassNotFoundException e) {
                throw new DeploymentException("Could not load javax.servlet.Servlet in bundle " + bundle, e);
            }


            for (org.apache.openejb.jee.Servlet servlet : webApp.getServlet()) {

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                    continue;
                }
                String servletName = servlet.getServletName();
                Class<?> servletClass;
                try {
                    servletClass = webBundle.loadClass(servletClassName);
                } catch (ClassNotFoundException e) {
                    throw new DeploymentException("Could not load servlet class " + servletClassName, e);
                }
                if (!baseServletClass.isAssignableFrom(servletClass)) {
                    //fake servletData

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        Bundle bundle = bundleContext.getBundle();


        try {
            for (String buildeName : builders) {
                Class aClass = bundle.loadClass(buildeName.trim());
                AssertionBuilder builder = (AssertionBuilder) aClass.newInstance();
                QName[] knownElements = builder.getKnownElements();
                for (QName knownElement : knownElements) {
                    AssertionBuilderFactory.registerBuilder(knownElement, builder);
                }

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            // jaas.conf location.
            System.setProperty("java.security.auth.login.config", carbonHome + File.separator + "repository"+ File.separator + "conf" + File.separator + "jaas.conf");
            
            //Registering rampart policy builders
            for (String buildeName : builders) {
                Class aClass = bundle.loadClass(buildeName.trim());
                AssertionBuilder builder = (AssertionBuilder) aClass.newInstance();
                QName[] knownElements = builder.getKnownElements();
                for (QName knownElement : knownElements) {
                    AssertionBuilderFactory.registerBuilder(knownElement, builder);
                }

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            } catch (Throwable t) {
                // Check if the bundle can see the class
                try {
                    PassThroughMetadata ptm = (PassThroughMetadata) componentDefinitionRegistry.getComponentDefinition("blueprintBundle");
                    Bundle b = (Bundle) ptm.getObject();
                    if (b.loadClass(DataFormatResolver.class.getName()) != DataFormatResolver.class) {
                        throw new UnsupportedOperationException();
                    }
                    svc.setInterface(DataFormatResolver.class.getName());
                } catch (Throwable t2) {
                    throw new UnsupportedOperationException();

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            } catch (Throwable t) {
                // Check if the bundle can see the class
                try {
                    PassThroughMetadata ptm = (PassThroughMetadata) componentDefinitionRegistry.getComponentDefinition("blueprintBundle");
                    Bundle b = (Bundle) ptm.getObject();
                    if (b.loadClass(LanguageResolver.class.getName()) != LanguageResolver.class) {
                        throw new UnsupportedOperationException();
                    }
                    svc.setInterface(LanguageResolver.class.getName());
                } catch (Throwable t2) {
                    throw new UnsupportedOperationException();

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            } catch (Throwable t) {
                // Check if the bundle can see the class
                try {
                    PassThroughMetadata ptm = (PassThroughMetadata) componentDefinitionRegistry.getComponentDefinition("blueprintBundle");
                    Bundle b = (Bundle) ptm.getObject();
                    if (b.loadClass(ComponentResolver.class.getName()) != ComponentResolver.class) {
                        throw new UnsupportedOperationException();
                    }
                    svc.setInterface(ComponentResolver.class.getName());
                } catch (Throwable t2) {
                    throw new UnsupportedOperationException();

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        public void bundleChanged(BundleEvent event) {
            Bundle b = event.getBundle();
            if (event.getType() == BundleEvent.STARTING || event.getType() == BundleEvent.LAZY_ACTIVATION) {
                if (b.getEntry("org/apache/aries/isolated/sample/SharedImpl.class") != null) {
                    try {
                        Class<?> cl = b.loadClass("org.apache.aries.isolated.sample.SharedImpl");
                        cl.newInstance();
                        loadedClass.set(true);
                    } catch (Exception e) {
                        e.printStackTrace();
                        throw new RuntimeException(e);

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            System.out.println("Started "+b.getSymbolicName() + " [" + getState(b) + "]");
            // Get the Platform.getExtensionRegistry()
            if ("org.eclipse.core.runtime".equals(b.getSymbolicName())) {
                // The Platform class loaded by the bundle is different that the one
                // on the classpath
                Class<?> cls = b.loadClass("org.eclipse.core.runtime.Platform");
                Method m = cls.getMethod("getExtensionRegistry");
                Object reg = m.invoke(cls);
                System.out.println(reg);
            }
        }

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