AbstractOsgiBundleApplicationContext.java 文件源码

/**
 * Takes care of enforcing the relationship between exporter and importers.
 * 
 * @param beanFactory
 */
private void enforceExporterImporterDependency(ConfigurableListableBeanFactory beanFactory) {
    Object instance = null;

    instance = AccessController.doPrivileged(new PrivilegedAction() {

        public Object run() {
            // create the service manager
            ClassLoader loader = AbstractOsgiBundleApplicationContext.class.getClassLoader();
            try {
                Class managerClass = loader.loadClass(EXPORTER_IMPORTER_DEPENDENCY_MANAGER);
                return BeanUtils.instantiateClass(managerClass);
            }
            catch (ClassNotFoundException cnfe) {
                throw new ApplicationContextException("Cannot load class " + EXPORTER_IMPORTER_DEPENDENCY_MANAGER,
                    cnfe);
            }
        }
    });

    // sanity check
    Assert.isInstanceOf(BeanFactoryAware.class, instance);
    Assert.isInstanceOf(BeanPostProcessor.class, instance);
    ((BeanFactoryAware) instance).setBeanFactory(beanFactory);
    beanFactory.addBeanPostProcessor((BeanPostProcessor) instance);
}