@SuppressWarnings({"unchecked"})
public T createInstance(String managerClassName) {
Class managerClass = ReflectionUtil.loadClass(managerClassName);
if (managerClass == null) {
logger.warn("Cannot load class: {}", managerClassName);
managerClass = defaultImplClass;
}
if (!clazz.isAssignableFrom(managerClass)) {
logger.warn("Cannot use as {}: {}", clazz.getName(), managerClassName);
managerClass = defaultImplClass;
}
logger.debug("Using class: {}", managerClass.getName());
T instance = (T) ReflectionUtil.newInstance(managerClass);
if (instance == null) {
logger.warn(
"Cannot instanciate: {}. Fall back to default: {}.",
managerClass.getName(),
FieldsManager.class.getName());
instance = (T) ReflectionUtil.newInstance(defaultImplClass);
if (instance == null) {
logger.error("Cannot instanciate: {}", defaultImplClass.getName());
}
}
logger.debug("Installed {0}: {1}", clazz.getName(), instance);
return instance;
}
