// set resource path prefix
pathPrefix = getInitParameter(INIT_PARAM_RESOURCE_PATH_PREFIX);
getServletContext().setAttribute(CTX_ATTR_RESOURCE_PATH_PREFIX, pathPrefix);
log.debug(INIT_PARAM_RESOURCE_PATH_PREFIX + " = " + pathPrefix);
txMgr = new TxLockManagerImpl();
subscriptionMgr = new SubscriptionManagerImpl();
txMgr.addTransactionListener((SubscriptionManagerImpl) subscriptionMgr);
// todo: eventually make configurable
resourceFactory = new DavResourceFactoryImpl(txMgr, subscriptionMgr);