Custom Schedule Task ( Null Pointer Exception)

Question

Hi All,
I had written Custom Schedule task: Below is the code
When i run the Schedule task it is failing throwing Null Pointer Exception. the code is not able to fetch userId ,passwordex and passwordwar values in execute method. please help me
package oracle.iam.sample.notification;
import java.sql.Date;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import oracle.iam.identity.exception.NoSuchUserException;
import oracle.iam.identity.exception.UserLookupException;
import oracle.iam.identity.usermgmt.api.UserManager;
import oracle.iam.identity.usermgmt.vo.User;
import oracle.iam.notification.api.NotificationService;
import oracle.iam.notification.exception.EventException;
import oracle.iam.notification.exception.MultipleTemplateException;
import oracle.iam.notification.exception.NotificationException;
import oracle.iam.notification.exception.NotificationResolverNotFoundException;
import oracle.iam.notification.exception.TemplateNotFoundException;
import oracle.iam.notification.exception.UnresolvedNotificationDataException;
import oracle.iam.notification.exception.UserDetailsNotFoundException;
import oracle.iam.notification.vo.NotificationEvent;
import oracle.iam.platform.Platform;
import oracle.iam.platform.authz.exception.AccessDeniedException;
import oracle.iam.scheduler.vo.TaskSupport;
import static oracle.iam.identity.usermgmt.api.UserManagerConstants.AttributeName.MANAGER_KEY;
import static oracle.iam.identity.usermgmt.api.UserManagerConstants.AttributeName.USER_LOGIN;
import oracle.iam.platform.kernel.vo.Orchestration;
public class PasswordExpiry extends TaskSupport {
public PasswordExpiry() {
super();
public void execute(HashMap taskParameters) {
System.out.println("inside the Execute methode");
System.out.println("Schedule task Arguments "+taskParameters);
String userId = (String)taskParameters.get("User Login");
System.out.println("===========input=============== "+userId);
String passwordex=taskParameters.get("usr_pwd_expire_date").toString();
System.out.println("===========input=============== "+passwordex);
String passwordwar=taskParameters.get("usr_pwd_warn_date").toString();
System.out.println("===========input=============== "+passwordwar);
try {
System.out.println("inside the Try block");
NotificationService notService = Platform.getService(NotificationService.class);
NotificationEvent eventToSend = this.createNotificationEvent(userId, passwordex,passwordwar);
notService.notify(eventToSend);
} catch (Exception e) {
e.printStackTrace();
private NotificationEvent createNotificationEvent(String userKey, String passwordex,
String passwordwar) throws NoSuchUserException, UserLookupException,
AccessDeniedException {
NotificationEvent event = new NotificationEvent();
//get user IDs to whom notification is to be sent and set it in the
//event object being created
String[] receiverUserIds= getRecipientUserIds(userKey);
event.setUserIds(receiverUserIds);
//Set template name to be used to send notification for this event
event.setTemplateName("PasswordWarningNotificationTemplate");
//Setting senderId as null here and hence default sender ID would
//get picked up
event.setSender(null);
//Create a map with key value pair for the parameters declared at time
//of configuring notification event
HashMap<String, Object> map = new HashMap<String, Object>();
map.put("usr_key", userKey);
map.put("usr_pwd_warn_date", passwordex);
map.put("usr_pwd_expire_date",passwordwar);
event.setParams(map);
return event;
private String[] getRecipientUserIds(String userKey) throws NoSuchUserException,
UserLookupException, AccessDeniedException {
UserManager usrMgr = Platform.getService(UserManager.class);
User user = null;
String userId = null;
Set<String> userRetAttrs = new HashSet<String>();
//Sending notification to both the user and his/her manager
userRetAttrs.add(MANAGER_KEY.getId());
userRetAttrs.add(USER_LOGIN.getId());
User manager = null;
String managerId = null;
String managerKey = null;
Set<String> managerRetAttrs = new HashSet<String>();
managerRetAttrs.add(USER_LOGIN.getId());
//Retrieving User ID
user = usrMgr.getDetails(userKey, userRetAttrs, false);
userId = user.getAttribute(USER_LOGIN.getId()).toString();
List<String> userIds = new ArrayList<String>();
userIds.add(userId);
if (user.getAttribute(MANAGER_KEY.getId()) != null) {
managerKey = user.getAttribute(MANAGER_KEY.getId()).toString();
manager = usrMgr.getDetails(managerKey, managerRetAttrs, false);
//Retrieving User's Manager ID
managerId = manager.getAttribute(USER_LOGIN.getId()).toString();
userIds.add(managerId);
//To return String[] than an Object array
String[] recipientIDs = userIds.toArray(new String[0]);
return recipientIDs;
* Call notification Engine passing an event object to it
* @param event
* @throws NotificationException
private void sendNotification(NotificationEvent event) throws NotificationException {
try {
//Call notify method of NotificationService to pass on the event
//to notification engine
NotificationService notificationService = Platform.getService(
NotificationService.class);
notificationService.notify(event);
} catch (EventException e) {
throw new NotificationException(e.getMessage(), e.getCause());
} catch (UnresolvedNotificationDataException e) {
throw new NotificationException(e.getMessage(), e.getCause());
} catch (TemplateNotFoundException e) {
throw new NotificationException(e.getMessage(), e.getCause());
} catch (MultipleTemplateException e) {
throw new NotificationException(e.getMessage(), e.getCause());
} catch (NotificationResolverNotFoundException e) {
throw new NotificationException(e.getMessage(), e.getCause());
} catch (UserDetailsNotFoundException e) {
throw new NotificationException(e.getMessage(), e.getCause());
} catch (NotificationException e){
throw e;
public HashMap getAttributes() {
return null;
public void setAttributes() {}
Thank you

Answer 1

The task parameters passed into a scheduled job are the parameters defined for the scheduled task definition in the metadata xml and configured in the scheduled job. They are not the data of an individual user as you seem to be trying to get. In a scheduled task I would expect some sort of search for users to operate on.