Index: lams_common/src/java/org/lamsfoundation/lams/web/session/LoginFormAuthenticator.java
===================================================================
diff -u -r0b91d14af990013a1f529eca5d701ebe37a5fc73 -r69f71732ee88c23ac8989c8e82070a6402b59fb5
--- lams_common/src/java/org/lamsfoundation/lams/web/session/LoginFormAuthenticator.java	(.../LoginFormAuthenticator.java)	(revision 0b91d14af990013a1f529eca5d701ebe37a5fc73)
+++ lams_common/src/java/org/lamsfoundation/lams/web/session/LoginFormAuthenticator.java	(.../LoginFormAuthenticator.java)	(revision 69f71732ee88c23ac8989c8e82070a6402b59fb5)
@@ -26,7 +26,16 @@
 import org.apache.catalina.connector.Request;
 import org.apache.catalina.connector.Response;
 import org.apache.catalina.deploy.LoginConfig;
-
+/**
+ * This class is special for JBOSS/Tomcat.
+ * 
+ * The resson is JBOSS ignores any Filter if j_security_checks submit. It becomes impossilble to preset the current
+ * session ID to UniversialLoginModule. This class will replace default <code>SystemSessionFilter</code> setting.
+ * 
+ * @author Steve.Ni
+ * 
+ * $version$
+ */
 public class LoginFormAuthenticator extends FormAuthenticator{
 
 	public boolean authenticate(Request request, Response response, LoginConfig config) throws IOException {