[jbossseam-issues] [JBoss JIRA] Closed: (JBSEAM-2164) Improve exception chaining in SeamLoginModule

Improve exception chaining in SeamLoginModule --------------------------------------------- Key: JBSEAM-2164 URL: http://jira.jboss.com/jira/browse/JBSEAM-2164 Project: JBoss Seam Issue Type: Feature Request Components: Security Affects Versions: 2.0.0.CR3 Reporter: Yannick Lazzari Assigned To: Shane Bryzak Priority: Minor This an improvement request in the SeamLoginModule class to properly chain exceptions when throwing LoginExceptions in the login method. See code below: public boolean login() throws LoginException { try { NameCallback cbName = new NameCallback("Enter username"); PasswordCallback cbPassword = new PasswordCallback("Enter password", false); // Get the username and password from the callback handler callbackHandler.handle(new Callback[] { cbName, cbPassword }); username = cbName.getName(); } catch (Exception ex) { log.error("Error logging in", ex); throw new LoginException(ex.getMessage()); } MethodExpression mb = Identity.instance().getAuthenticateMethod(); if (mb==null) { throw new IllegalStateException("No authentication method defined - please define <security:authenticate-method/> for <security:identity/> in components.xml"); } try { return (Boolean) mb.invoke(); } catch (Exception ex) { log.error("Error invoking login method", ex); throw new LoginException(ex.getMessage()); } } In both instances where a LoginException is thrown, only the message is passed to the constructor of the LoginException. I know that the LoginException does not overload the constructor to pass a cause directly but we can use the initCause method instead: LoginException loginException = new LoginException(); loginException.initCause(originalException); throw loginException; If people use typed exceptions in their authenticator method to express different reasons why the login attempt failed, it's impossible right now to get that original exception.