/**
* Load the application context using a single classloader
*
* @param ac The spring application context
* @param config a list of configurations represented as List of resources
* @param loader the classloader to use
*/
public void loadComponent(
ConfigurableApplicationContext ac, List<Resource> config, ClassLoader loader) {
ClassLoader current = Thread.currentThread().getContextClassLoader();
Thread.currentThread().setContextClassLoader(loader);
try {
// make a reader
XmlBeanDefinitionReader reader =
new XmlBeanDefinitionReader((BeanDefinitionRegistry) ac.getBeanFactory());
// In Spring 2, classes aren't loaded during bean parsing unless
// this
// classloader property is set.
reader.setBeanClassLoader(loader);
reader.loadBeanDefinitions(config.toArray(new Resource[0]));
} catch (Throwable t) {
log.warn("loadComponentPackage: exception loading: " + config + " : " + t, t);
} finally {
// restore the context loader
Thread.currentThread().setContextClassLoader(current);
}
}
/**
* Load one component package into the AC
*
* @param packageRoot The file path to the component package
* @param ac The ApplicationContext to load into
*/
protected void loadComponentPackage(File dir, ConfigurableApplicationContext ac) {
// setup the classloader onto the thread
ClassLoader current = Thread.currentThread().getContextClassLoader();
ClassLoader loader = newPackageClassLoader(dir);
M_log.info("loadComponentPackage: " + dir);
Thread.currentThread().setContextClassLoader(loader);
File xml = null;
try {
// load this xml file
File webinf = new File(dir, "WEB-INF");
xml = new File(webinf, "components.xml");
// make a reader
XmlBeanDefinitionReader reader =
new XmlBeanDefinitionReader((BeanDefinitionRegistry) ac.getBeanFactory());
// In Spring 2, classes aren't loaded during bean parsing unless this
// classloader property is set.
reader.setBeanClassLoader(loader);
List<Resource> beanDefList = new ArrayList<Resource>();
beanDefList.add(new FileSystemResource(xml.getCanonicalPath()));
// Load the demo components, if necessary
File demoXml = new File(webinf, "components-demo.xml");
if ("true".equalsIgnoreCase(System.getProperty("sakai.demo"))) {
if (M_log.isDebugEnabled()) M_log.debug("Attempting to load demo components");
if (demoXml.exists()) {
if (M_log.isInfoEnabled()) M_log.info("Loading demo components from " + dir);
beanDefList.add(new FileSystemResource(demoXml.getCanonicalPath()));
}
} else {
if (demoXml.exists()) {
// Only log that we're skipping the demo components if they exist
if (M_log.isInfoEnabled()) M_log.info("Skipping demo components from " + dir);
}
}
reader.loadBeanDefinitions(beanDefList.toArray(new Resource[0]));
} catch (Exception e) {
M_log.warn("loadComponentPackage: exception loading: " + xml + " : " + e, e);
} finally {
// restore the context loader
Thread.currentThread().setContextClassLoader(current);
}
}
