Custome Error Handling in OWD Data Adaptor Plugin

Hi,
Does the Oracle web determination allow to customize error or exception message, while loadins/saving the interview session data.
while loading some session data for a caseid if certain functional error throws, then can I telll the OWD to display my customized message rather than the static message like Failed to load caseID '{caseid}'. This statis message is configurable the message in message<locale>.properties, however my requrement is to display the message at dynamically.
Thanks,
Lokesh
Edited by: 793191 on 09-Sep-2010 02:18

Thanks Frank.
I got my answer. I have some more doubts please help.
While handling the OnInvestigationStartedEvent I am getting the cased parameter as null.
Please have a look to below code for eventhandler :
public void handleEvent(Object sender, OnInvestigationStartedEvent event) {
 if (logger.isDebugEnabled()) {
 logger.debug("handleEvent(" + sender + ", " + event + ") called");
 InvestigateAction action = (InvestigateAction)sender;
 SessionContext session = event.getSessionContext();
 if (logger.isDebugEnabled()) {
 logger.debug("Session Data :::"+session);
 logger.debug("session.getSecurityToken() :::"+session.getSecurityToken());
 logger.debug("session.getCaseID() :::"+session.getCaseID());
The logger prints :
MyOnInvestigationStartedEventHandler - Session Data :::[email protected]1124c5e
MyOnInvestigationStartedEventHandler - session.getSecurityToken() :::com.oracle.determinations.interview.engine.security.BasicSecurityToken@53ca8a
MyOnInvestigationStartedEventHandler - session.getCaseID() :::null
The URL I am using to start the session is
http://<web-determinations url>/startsession/<rulebase>/<locale>?caseID=ABC123456&user=guest
Also, is there any way to accesss the custom parameter appended in URL
like, http://<web-determinations url>/startsession/<rulebase>/<locale>?caseID=ABC123456&user=guest&name=myname&addr=myaddr
Can we access these new request parameter (name,addr) from any event handler or DataAdaptor
Many Thanks,
Lokesh

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