Examples of org.apache.xbean.finder.ClassFinder

org.apache.xbean.finder.ClassFinder
ClassFinder searches the classpath of the specified classloader for packages, classes, constructors, methods, or fields with specific annotations. For security reasons ASM is used to find the annotations. Classes are not loaded unless they match the requirements of a called findAnnotated* method. Once loaded, these classes are cached. The getClassesNotLoaded() method can be used immediately after any find method to get a list of classes which matched the find requirements (i.e. contained the annotation), but were unable to be loaded. @author David Blevins @version $Rev: 1064425 $ $Date: 2011-01-27 18:13:40 -0800 (Thu, 27 Jan 2011) $

    }


    protected ClassFinder createOpenWebBeansClassFinder(WebApp webApp, WebModule webModule)
        throws DeploymentException {
        List<Class<?>> classes = getManagedClasses(webApp, webModule);
        return new ClassFinder(classes);
    }

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        Map<String, Bundle> tldLocationBundleMap = getTldFiles(webApp, webModule);
        LinkedHashSet<Class<?>> classes = getListenerClasses(webApp, webModule, tldLocationBundleMap, listenerNames);
        
        AbstractFinder originalClassFinder = webModule.getClassFinder();
        ClassFinder classFinder = new ClassFinder(new ArrayList<Class<?>>(classes));
        webModule.setClassFinder(classFinder);
        namingBuilders.buildNaming(webApp, jettyWebApp, webModule, buildingContext);
        webModule.setClassFinder(originalClassFinder);


        //only try to install it if reference will work.

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        try {
            tempClassLoader = new JarFileClassLoader(null, urls, parentClassLoader);
            List<Class<?>> classes = new ArrayList<Class<?>>();
            for (URL url : urlList) {
                try {
                    ClassFinder classFinder = new ClassFinder(tempClassLoader, Collections.singletonList(url));
                    classes.addAll(classFinder.findAnnotatedClasses(WebService.class));
                    classes.addAll(classFinder.findAnnotatedClasses(WebServiceProvider.class));
                } catch (Exception e) {
                    logger.warn("Fail to search Web Service in jar [" + url + "]", e);
                }
            }
            return classes;

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                addClass(bundle, classes, filter.getFilterClass());
            }
            for (Listener listener : webApp.getListener()) {
                addClass(bundle, classes, listener.getListenerClass());
            }
            return new ClassFinder(new ArrayList<Class<?>>(classes));
        } catch (Exception e) {
            throw new DeploymentException(e);
        }
    }

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        List<Class<?>> classes = new ArrayList<Class<?>>();
        while (clazz != Object.class) {
            classes.add(clazz);
            clazz = clazz.getSuperclass();
        }
        addWebServiceContextInjections(holder, new ClassFinder(classes));
    }

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                    ClassLoader parent = classLoader.getParent();
                    if (parent != null) {
                        urlSet = urlSet.exclude(parent);
                    }
                }
                ClassFinder finder = new ClassFinder(classLoader, urlSet.getUrls());
                for (Field field : finder.findAnnotatedFields(EJB.class)) {
                    EJB ejb = field.getAnnotation(EJB.class);
                    AnnotationDeployer.Member member = new AnnotationDeployer.FieldMember(field);
                    buildEjbRef(consumer, ejb, member);
                }


                for (Method method : finder.findAnnotatedMethods(EJB.class)) {
                    EJB ejb = method.getAnnotation(EJB.class);
                    AnnotationDeployer.Member member = new AnnotationDeployer.MethodMember(method);
                    buildEjbRef(consumer, ejb, member);
                }

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            // from an EjbModule, so we don't skip those ever.
            if (clientModule.getFinder() == null && clientModule.getAltDDs().containsKey("application-client.xml"))


            if (clientModule.getApplicationClient() != null && clientModule.getApplicationClient().isMetadataComplete()) return clientModule;


            ClassFinder finder = clientModule.getFinder();


            if (finder == null) {
                try {
                    if (clientModule.getJarLocation() != null) {
                        String location = clientModule.getJarLocation();
                        File file = new File(location);


                        URL url;
                        if (file.exists()) {
                            url = file.toURL();
                        } else {
                            url = new URL(location);
                        }
                        finder = new ClassFinder(clientModule.getClassLoader(), url);
                    } else {
                        finder = new ClassFinder(clientModule.getClassLoader());
                    }
                } catch (MalformedURLException e) {
                    startupLogger.warning("startup.scrapeFailedForClientModule.url", clientModule.getJarLocation());
                    return clientModule;
                } catch (Exception e) {
                    startupLogger.warning("startup.scrapeFailedForClientModule", e, clientModule.getJarLocation());
                    return clientModule;
                }
            }


            // This method is also called by the deploy(EjbModule) method to see if those
            // modules have any @LocalClient or @RemoteClient classes
            for (Class<?> clazz : finder.findAnnotatedClasses(LocalClient.class)) {
                clientModule.getLocalClients().add(clazz.getName());
            }


            for (Class<?> clazz : finder.findAnnotatedClasses(RemoteClient.class)) {
                clientModule.getRemoteClients().add(clazz.getName());
            }


            if (clientModule.getApplicationClient() == null){
                if (clientModule.getRemoteClients().size() > 0 || clientModule.getLocalClients().size() > 0) {

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        public WebModule deploy(WebModule webModule) throws OpenEJBException {
            WebApp webApp = webModule.getWebApp();
            if (webApp != null && (webApp.isMetadataComplete())) return webModule;


            ClassFinder finder;
            try {
                File file = new File(webModule.getJarLocation());
                URL[] urls = DeploymentLoader.getWebappUrls(file);
                final ClassLoader webClassLoader = webModule.getClassLoader();
                finder = new ClassFinder(webClassLoader, asList(urls));


                ClassFinder finder2 = new ClassFinder(webClassLoader);
                webModule.setFinder(finder);
            } catch (Exception e) {
                startupLogger.warning("Unable to scrape for @WebService or @WebServiceProvider annotations. ClassFinder failed.", e);
                return webModule;
            }

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        }


        public EjbModule deploy(EjbModule ejbModule) throws OpenEJBException {
            if (ejbModule.getEjbJar() != null && ejbModule.getEjbJar().isMetadataComplete()) return ejbModule;


            ClassFinder finder;
            if (ejbModule.getJarLocation() != null) {
                try {
                    String location = ejbModule.getJarLocation();
                    File file = new File(location);


                    URL url;
                    if (file.exists()) {
                        url = file.toURL();
                    } else {
                        url = new URL(location);
                    }
                    finder = new ClassFinder(ejbModule.getClassLoader(), url);
                } catch (MalformedURLException e) {
                    startupLogger.warning("startup.scrapeFailedForModule", ejbModule.getJarLocation());
                    return ejbModule;
                }
            } else {
                try {
                    finder = new ClassFinder(ejbModule.getClassLoader());
                } catch (Exception e) {
                    startupLogger.warning("Unable to scrape for @Stateful, @Stateless, @Singleton or @MessageDriven annotations. ClassFinder failed.", e);
                    return ejbModule;
                }
            }


            /* 19.2:  ejb-name: Default is the unqualified name of the bean class */


            EjbJar ejbJar = ejbModule.getEjbJar();
            for (Class<?> beanClass : finder.findAnnotatedClasses(Singleton.class)) {
                Singleton singleton = beanClass.getAnnotation(Singleton.class);
                String ejbName = getEjbName(singleton, beanClass);


                if (!isValidEjbAnnotationUsage(Singleton.class, beanClass, ejbName, ejbModule)) continue;


                EnterpriseBean enterpriseBean = ejbJar.getEnterpriseBean(ejbName);
                if (enterpriseBean == null) {
                    enterpriseBean = new SingletonBean(ejbName, beanClass.getName());
                    ejbJar.addEnterpriseBean(enterpriseBean);
                }
                if (enterpriseBean.getEjbClass() == null) {
                    enterpriseBean.setEjbClass(beanClass.getName());
                }
                if (enterpriseBean instanceof SessionBean) {
                    SessionBean sessionBean = (SessionBean) enterpriseBean;
                    sessionBean.setSessionType(SessionType.SINGLETON);
                }
            }


            for (Class<?> beanClass : finder.findAnnotatedClasses(Stateless.class)) {
                Stateless stateless = beanClass.getAnnotation(Stateless.class);
                String ejbName = getEjbName(stateless, beanClass);


                if (!isValidEjbAnnotationUsage(Stateless.class, beanClass, ejbName, ejbModule)) continue;


                EnterpriseBean enterpriseBean = ejbJar.getEnterpriseBean(ejbName);
                if (enterpriseBean == null) {
                    enterpriseBean = new StatelessBean(ejbName, beanClass.getName());
                    ejbJar.addEnterpriseBean(enterpriseBean);
                }
                if (enterpriseBean.getEjbClass() == null) {
                    enterpriseBean.setEjbClass(beanClass.getName());
                }
                if (enterpriseBean instanceof SessionBean) {
                    SessionBean sessionBean = (SessionBean) enterpriseBean;
                    sessionBean.setSessionType(SessionType.STATELESS);


                    if (stateless.mappedName() != null) {
                        sessionBean.setMappedName(stateless.mappedName());
                    }
                }
            }


            for (Class<?> beanClass : finder.findAnnotatedClasses(Stateful.class)) {
                Stateful stateful = beanClass.getAnnotation(Stateful.class);
                String ejbName = getEjbName(stateful, beanClass);


                if (!isValidEjbAnnotationUsage(Stateful.class, beanClass, ejbName, ejbModule)) continue;


                EnterpriseBean enterpriseBean = ejbJar.getEnterpriseBean(ejbName);
                if (enterpriseBean == null) {
                    enterpriseBean = new StatefulBean(ejbName, beanClass.getName());
                    ejbJar.addEnterpriseBean(enterpriseBean);
                }
                if (enterpriseBean.getEjbClass() == null) {
                    enterpriseBean.setEjbClass(beanClass.getName());
                }
                if (enterpriseBean instanceof SessionBean) {
                    SessionBean sessionBean = (SessionBean) enterpriseBean;
                    // TODO: We might be stepping on an xml override here
                    sessionBean.setSessionType(SessionType.STATEFUL);
                    if (stateful.mappedName() != null) {
                        sessionBean.setMappedName(stateful.mappedName());
                    }
                }
            }


            List<Class> classes = finder.findAnnotatedClasses(MessageDriven.class);
            for (Class<?> beanClass : classes) {
                MessageDriven mdb = beanClass.getAnnotation(MessageDriven.class);
                String ejbName = getEjbName(mdb, beanClass);


                if (!isValidEjbAnnotationUsage(MessageDriven.class, beanClass, ejbName, ejbModule)) continue;


                MessageDrivenBean messageBean = (MessageDrivenBean) ejbJar.getEnterpriseBean(ejbName);
                if (messageBean == null) {
                    messageBean = new MessageDrivenBean(ejbName);
                    ejbJar.addEnterpriseBean(messageBean);
                }
                if (messageBean.getEjbClass() == null) {
                    messageBean.setEjbClass(beanClass.getName());
                }
            }


            AssemblyDescriptor assemblyDescriptor = ejbModule.getEjbJar().getAssemblyDescriptor();
            if (assemblyDescriptor == null) {
                assemblyDescriptor = new AssemblyDescriptor();
                ejbModule.getEjbJar().setAssemblyDescriptor(assemblyDescriptor);
            }


            // https://issues.apache.org/jira/browse/OPENEJB-980
            startupLogger.debug("Searching for inherited application exceptions (see OPENEJB-980) - it doesn't care whether inherited is true/false");  
            List<Class> appExceptions;
            appExceptions = finder.findInheritedAnnotatedClasses(ApplicationException.class);
            for (Class<?> exceptionClass : appExceptions) {
                startupLogger.debug("...handling " + exceptionClass);  
                if (assemblyDescriptor.getApplicationException(exceptionClass) == null) {
                    ApplicationException annotation = exceptionClass.getAnnotation(ApplicationException.class);
                    // OPENEJB-980

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                Class clazz;
                try {
                    clazz = classLoader.loadClass(className);
                    remoteClients.add(clazz);


                    ClassFinder inheritedClassFinder = createInheritedClassFinder(clazz);


                    buildAnnotatedRefs(client, inheritedClassFinder, classLoader);
                } catch (ClassNotFoundException e) {
                    /**
                     * Some ClientModule are discovered only because the jar uses a Main-Class
                     * entry in the MANIFEST.MF file.  Lots of jars do this that are not used as
                     * java ee application clients, so lets not make this a failure unless it
                     * has a META-INF/application-client.xml which tells us it is in fact
                     * expected to be a ClientModule and not just some random jar.
                     */
                    if (clientModule.getAltDDs().containsKey("application-client.xml")) {
                        getValidationContext().fail("client", "client.missingMainClass", className);
                    } else {
                        getValidationContext().warn("client", "client.missingMainClass", className);
                    }
                }
            }


            for (String className : clientModule.getRemoteClients()) {
                Class clazz;
                try {
                    clazz = classLoader.loadClass(className);
                    remoteClients.add(clazz);
                } catch (ClassNotFoundException e) {
                    throw new OpenEJBException("Unable to load RemoteClient class: " + className, e);
                }


                ClassFinder inheritedClassFinder = createInheritedClassFinder(clazz);


                buildAnnotatedRefs(client, inheritedClassFinder, classLoader);
            }


            for (String className : clientModule.getLocalClients()) {
                Class clazz;
                try {
                    clazz = classLoader.loadClass(className);
                } catch (ClassNotFoundException e) {
                    throw new OpenEJBException("Unable to load LocalClient class: " + className, e);
                }


                ClassFinder inheritedClassFinder = createInheritedClassFinder(clazz);


                buildAnnotatedRefs(client, inheritedClassFinder, classLoader);
            }


            validateRemoteClientRefs(classLoader, client, remoteClients);

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