Setting Up Events

This chapter provides an overview of event setup and event handlers and discusses how to:

• Define and register event handlers.

• Create event handlers.

• Test event handlers and events.

• Raise events.

• Monitor events.

• View event summaries.

• View help for Event Manager pages.

Understanding Event Setup

To implement Event Manager into your application processing:

1. Identify the business events that drive the execution of your business logic and, if necessary, define a new event.

   In many cases, the event is already defined in the local event registry that is accessible through the Event Registry component. If the event is not yet defined, you must define a new business event. To define a new event:

   1. Create an Application Package in PeopleTools Application Designer.

      This Application Package is a container for your Handler application classes. It needs to contain a sub-package named Handlers with individual application classes under it for each Handler you wish to register.

   2. Register the event to the Event Manager framework through the Event Registry component.

2. Write the event handlers in PeopleTools Application Designer to execute the business logic that is specific to the event.

   To develop an event handler, create an Application Class with a method named ProcessEvent() that includes the Event Manager interface code that is provided in this chapter. Event handlers can be for one or more business events.

3. Register the event handlers to the event through the Event Registry component.

4. Test your event and its registered event handlers.

   To test event handlers and events:

   1. Test the event handler in standalone mode through the Handler Tester component.

      Note. This test method does not require Integration Broker to be running.

   2. Test the event independent of the business process that raises the event through the Event Tester component.

      Note. This test method requires Integration Broker to be up and running.

   3. Test the event in the context of the business process by executing the business process that raises the event through the component or PeopleTools Application Engine process.

      The Event Manager framework automatically executes the registered event handlers for an event when you raise the business events.

Understanding Event Handlers

Business events are the functions in a business environment, such as adding a person, changing an employee’s compensation rate, terminating an assignment, promoting an employee, and so on. After the events are created, you register events in the Event Registry component. Event handlers are modules of business logic that react to instances of particular events to which they are registered. You must register event handlers to events so that the Event Manager framework executes the event handlers whenever the event is raised.

You can assign multiple event handlers to a single business event, and you can assign a single event handler to react to multiple events. When defining events in the Event Registry component, you can assign event handlers to function in either synchronous mode or asynchronous mode with respect to the process that raises the associated event. When a process raises a registered event, the Event Manager framework determines whether the event handlers that are registered to that event are synchronous or asynchronous. If an event handler is synchronous, the Event Manager framework executes that event handler inline as part of the process that raises the event. If the event handler is asynchronous, the Event Manager framework executes the event handler as a detached process that is out of the critical path of the mainline process. You can register both synchronous and asynchronous event handlers concurrently to the same event. The Event Manager framework executes the registered event handlers in whichever mode you configure them to operate, always executing synchronous event handlers first. When defining event handlers for registry in multiple events, you should include some code in the event handler to examine the Name property of the passed-in event object so that you know which type of event caused the event handler to be executed.

The Event Manager framework is based upon a simple notify and respond model. For the notification side, the Event Manager framework broadcasts that event has occurred, along with the data that caused the creation of the event instance. For the respond side, the individual applications link business logic into the Event Manager framework to respond to the business event. By linking PeopleTools Application Classes to the event in the Event Registry component, the Event Manager framework knows when to execute the registered event handlers for the event when the event is raised.

An event handler that fails during execution causes a disruption to the execution of any other event handlers for that event or the mainline process. The Event Manager framework therefore provides many options for monitoring and troubleshooting event handlers and events. You can monitor event instances and the executions and exceptions of the event handlers through the Event Monitor component or the Event Summary component. You can also test event handlers and events outside of the mainline business process through the Handler Tester component and the Event Tester component.

Local and Remote Nodes

The Event Manger framework enables you to manage events that have influence over more than one database instance. You can use the Event Manager framework to process business events that occur on either a local or remote database (also called a node). A remote node can execute only event handlers that are implemented locally and registered to events in its local event registry. For example, an event that is raised in an HCM database might be important to a separate PeopleSoft Enterprise Learning Management (ELM) database or a PeopleSoft Financials database.

The Event Manager Framework is currently not integrated with the Service Oriented Architecture (SOA) distributed registry. Instead, each database has its own local event registry. Within a local event registry, you can define events that you can raise by local process as well as events of interest to applications on the local database that are raised by remote databases. To support the processing of an event in a remote database, remote databases must implement the Event Manager framework. Also, each local event registry must contain entries for the remote events of interest along with their associated local event handlers.

From the perspective of the Event Manager framework, virtually no difference exists between the way that asynchronous handlers are supported for remote events and local events. You register event handlers to events in the event registry, configuring the Event Manager framework to execute event handlers for events that are raised in the local database, a remote database, or both types of databases. Thus, a single event handler can respond to instances of the same event that are raised on the local database as well as a remote database.

Event handlers for remote events are by definition asynchronous. Thus, on the local database the Event Manager framework executes these remote events only after completing the execution of synchronous handlers that you have registered for the event.

Example: Local Event with Synchronous Event Handlers

This example illustrates the processing of a mainline business process on a local database using an event with two registered synchronous event handlers. In this scenario, the mainline business process calls the application program interface (API) for the Event Manager framework to raise the event. The framework executes inline the two event handlers in order, publishes the generic PeopleTools Integration Broker event message, and then returns processing control back to the mainline business process.

Local event with synchronous handlers

Example: Local Event with Asynchronous Event Handlers

This example illustrates the processing of a mainline business process on a local database using an event with two registered asynchronous event handlers. In this scenario, the mainline process calls the API for the Event Manager framework to raise the event. The framework immediately publishes the generic PeopleTools Integration Broker event message, and returns processing control back to the mainline process without delay. A normal PeopleTools Integration Broker local subscription picks up the generic event message and invokes the framework to execute the asynchronous event handlers that are registered to the event.

Local event with asynchronous handlers

Example: Local Event with Both Synchronous and Asynchronous Event Handlers

This example illustrates the processing of a mainline business process on a local database using an event with two registered synchronous handlers and two registered asynchronous event handlers. In this scenario, the mainline process waits while the Event Manager framework executes the synchronous event handlers. The Event Manager framework executes the asynchronous event handler as detached processes launched by the local subscription to the generic PeopleTools Integration Broker event message.

Example: Remote Event

This example illustrates event processing that spans across local and remote databases.

In Registry A, the event has both registered synchronous and asynchronous event handlers. The event handler that is registered to this event is set for a local source. When the event in raised in Registry A, the Event Manager framework logs the event (if it is configured for logging), publishes the generic event message, executes synchronous event handlers that are registered to the event, and then subscribes locally to the generic event message to execute asynchronous event handlers that are registered locally to the event.

Registry B has the same event active in its local event registry. The event handler that is registered to this event is set for a remote source. Because Registry B subscribes remotely to the same event message that Registry A publishes, Registry B logs the occurrence of the event and then executes the registered asynchronous handler.

Remote Event

Defining and Registering Events

To register business events and their event handlers, use the Event Registry (EOEN_EVENT_REG) component.

This section provides an overview of new events and discusses how to define and register events.

Understanding New Events

Occasionally, you need to create new events that you can raise in the system for use by the Event Manager framework. As stated in the chapter overview, the first step is to identify the business events that drive the execution of your business logic and, if necessary, define a new event. Recall that to define a new event you must:

• Create a new application package for a new event in PeopleTools Application Designer.

• Register the new event to the Event Manager framework through the Event Registry component.

If you want to register a new event handler to an existing business event, you can bypass this step.

Pages Used to Define and Register Events

Registering Events to the Event Manager Framework

Access the Define Events page (Enterprise Components, Events & Notifications, Event Framework, Event Registry).

Event Name	The system displays the name of the business event that you want to be able to raise within the Event Manager framework. If you are adding a new business event, enter the name of the event when accessing the component through the Add mode.
Event Status	Select whether the status of the event is Active or Inactive.The system only raises events in the local database that are active. Note that the system ignores inactive events that are raised in remote databases.
Description and (Long)Description	Enter a short and long description of the business event. The system uses the short description in search pages. You should provide enough detail of the business event in the long description so that anyone accessing the event knows what it represents.
Logging Enabled	Select to have the system write a row to a log table for each instance of this event. The system writes to the log each time that this event is raised in the local database. For events that are raised in remote databases, the system writes to the local log each time it receives a generic event message for this event.

Registering Event Handlers

Access the Registered Handlers page (Enterprise Components, Events & Notifications, Event Framework, Event Registry).

The number of different events to which you can register a particular event handler is not restricted.

Handler Implementation

Handler Options

Logging/Trace

Creating Event Handlers

An event handler is the application-specific code that responds to a particular type of event. You must register event handlers to events so that when an event is raised, the Event Manager framework executes the appropriate event handlers.

Requirements for Creating Event Handlers

To be compatible with the Event Manager framework, when creating event handlers, you must implement all business logic for the event handlers to abide by the following set of standards and code requirements:

• You must implement the entry point to the event handler in a method named ProcessEvent() within an application class.

  The Event Manager framework executes the ProcessEvent()method whenever the associated event is raised. Within the ProcessEvent() method, you are free to reference or execute code in other methods, classes, or function libraries. This application class can be an extension of any other application class if necessary.

• You can create the event handler in any new or existing application package within your application, but you must create the event handler under the Handlers subpackage.

• The application class and the application package that it resides in must be owned by the application, not the Event Manager framework.

• You must import the baseEvent class definition from the Event Manager framework application package into the application class that implements the event handler.

  The ProcessEvent() method in the application class of the event handler receives as an input parameter an instance of this baseEvent class object.

• If you want to be able to communicate detailed errors, warnings, or any other messages back to the Event Manager framework, then you must populate the HandlerStatus property with appropriate entries.

  The HandlerStatus property is a complex property that is part of the baseEvent object that the Event Manager framework makes available to the event handler. The structure of this property is defined by EOEN_EVENT_MANAGER:Base:baseEvent. The property contains both an overall status indicator and an exception array. The Event Manager framework examines the contents of this property after executing this class and takes appropriate action.

  The HandlerStatus complex type also carries a method that facilitates appending an entry to the ExceptionArray structure. This method is named AddException() and takes as an argument the structure defined by EOEN_EVENT_MANAGER:Base:Types:ExceptionType.

  Note. If event logging is enabled, the Event Manager framework automatically creates an exception entry that lists the event data that was made available to the event handler. The system displays the event data in the pages of the Event Monitor component. If event logging is not enabled in the registry an exception entry containing the data for the event is created only if the Handler ExecutionStatus is set to F (Fail). This is done to allow re-processing of the event from the Event Monitor.
  
  

  The structure within the HandlerStatus property is:

  • ExecutionStatus (string – values "S"uccess, "F"ail)

  • ExceptionArray (array):

    EXCEPTION_TYPE (string – values "E"xception, "K"eys, "T"race)

    MESSAGE_SET_NBR (number)

    MESSAGE_NBR (number)

    MSG_SEVERITY (string – values "M"essage, "W"arning, "E"rror)

    MESSAGE_TEXT (string)

    EXPLAIN_TEXT (string)

Details of the baseEvent Class

When the Event Manager framework invokes the baseEvent class, it passes the baseEvent class into the ProcessEvent() method of the application class of the event handler. This enables you to use the properties and methods of the base class to obtain more information about the event instance to direct internal processing of the event.

This table lists public properties of the event object that are of interest to application developers who are implementing the Event Manager framework:

Event Handler Skeleton Code

You can use the following skeleton code as a starting point when building an event handler class:

import EOEN_EVENT_MANAGER:Base:baseEvent;
import EOEN_EVENT_MANAGER:Base:Types:ExceptionType;

class MyHandlerClass
   /** Dummy Constructor. */
   method MyHandlerClass();
   /** Process Event. */
   method ProcessEvent(&inEvent As EOEN_EVENT_MANAGER:Base:baseEvent);
end-class;

method MyHandlerClass
end-method;

method ProcessEvent
   /+ &inEvent as EOEN_EVENT_MANAGER:Base:baseEvent +/
   
   Local Record &recContext;
 
/* the following lines are required only if you want to pass detail information
    about Errors, Warnings  or other messages back to the Event Framework */
  Local EOEN_EVENT_MANAGER:Base:Types:ExceptionType &myExceptionType = ⇒
create EOEN_EVENT_MANAGER:Base:Types:ExceptionType();
   
   
   If Not &inEvent.HasContextRecord Then
      &myExceptionType.MESSAGE_SET_NBR = 18137;
      &myExceptionType.MESSAGE_NBR = 6509;
      &myExceptionType.MSG_SEVERITY = "E";
      &myExceptionType.MESSAGE_TEXT = MsgGetText(18137, 6509, ⇒
"no message found", &inEvent.EventID, &inEvent.EventNode);
      &myExceptionType.EXPLAIN_TEXT = "";
      &inEvent.HandlerStatus.AddException(&myExceptionType);
      
   Else 
⇒
/*================================================================= */⇒
⇒
/* ----------------   Business Logic goes here ------------------*/⇒

/*================================================================= */⇒
   End-If;
end-method;

Addressing Errors and Warnings

During execution, an event handler might encounter errors, warnings, or other issues that a user needs to be made aware of. In most cases, you want to pass this information back to the Event Manager framework so that users can view the information through the Monitor Events component. Although you do not have to pass this information back to the Event Manager framework, the more information that you do pass back, the easier it is for the administrator to resolve the problem.

The Event Manager framework uses a simple exception-array scheme to receive status information that is passed back to it from an event handler and subsequently displays that information in the Monitor Events component. The structure of the exception array is the same as the structure of a message in the message catalog. It contains a message set number, message number, severity level, message text, and explanation text in each row of the array. The message set number and message number are significant only if the information that you want to pass back to the Event Manager framework is described in a Message Catalog entry. If not, you can leave these two properties blank and just populate the message text, explanation text, and severity properties.

As mentioned previously, the event object that is passed into your event handler contains a complex property that is used to communicate the status of your event handler. At a minimum, you should populate the overall-status simple property with either (S)uccess or (F)ail prior to quitting your ProcessEvent() method. If you do not populate the overall status property, the Event Manager framework assumes that the event handler executed successfully. PeopleSoft recommends that you pass back information through the exception array of the complex property, although this is optional. For example, if the event object is passed into your handler as &inEvent, you populate the overall status property as:

&inEvent.HandlerStatus.ExecutionStatus = "S";⇒
     /* Handler terminated successfully */

You never have to deal directly with the exception array that is embedded in the event object that the event handler receives. Instead, whenever you want to add an item to this array, you call the AddException() method, thus passing in an object that the system has already populated with exception information. This object that you pass in is an instance of the ExceptionType TypeClass. This class has the following properties:

• Message Set Number

• Message Number

• Message Severity

• Message Text

• Explain (Long) Text

The following example shows how to add a message to the exception array for a message that does not come from the Message catalog, assuming that the event object is passed into your event handler as &inEvent:

&myExceptionType = create EOEN_EVENT_MANAGER:Base:Types:ExceptionType();
&myExceptionEntry.MESSAGE_SET_NBR = 0;
&myExceptionEntry.MESSAGE_NBR = 0;
&myExceptionEntry.MSG_SEVERITY = "M";
&myExceptionEntry.MESSAGE_TEXT = "Hello World!";
&myExceptionEntry.EXPLAIN_TEXT = "";

&inEvent.HandlerStatus.AddException(&myExceptionType);

For a Message Catalog entry, you must include the message set number and the message number. You must also retrieve the text and explain text from the Message Catalog because substitution tokens might be involved that the Event Monitor framework cannot pass or resolve.

Note. If you use the AddException() method to create an exception array entry with the MSG_SEVERITY property set to (E)rror, then the system automatically sets the overall execution status indicator for the event handler to (F)ail. This means that you do not need to separately set the overall status property.

Note. The Event Manager framework executes all event handlers that you register to an event. If a particular event handler fails, the Event Manager framework still executes the remaining event handlers that are registered to the event. The Event Manager framework can catch exceptions that an event handler raises rather than terminating before it has finished executing all of the registered event handlers. However, the Event Manger framework does not contain any exception processing or error handling subsystems, and because of this you must ensure that event handler code does not raise an exception that the Event Manager framework cannot catch. One such exception is the PeopleCode error statement. Therefore, you must never raise an exception for an error statement in your event handler. Otherwise, the Event Manager framework stops and does not execute any remaining event handlers that are registered to the event.

Component Interface and SOA Service Exceptions

If you have PeopleSoft Human Resources two additional exception methods are available: Component Interfaces (CIs) and Service Oriented Architecture (SOA) services. The Event Manager framework therefore provides assistance to facilitate passing exceptions from these sources back to the Event Manager framework and ultimately into the Event Monitor component.

The system displays exceptions that are raised by CIs or SOA services on the Handler Exceptions page of the Event Monitor component, much like any other exceptions that are written to the log. For severity information, the system prefaces the message with “[CI] ” or “[SOA]”, respectively.

The structure of the event-handler exception log is similar to the exception structure within PeopleTools for CIs and within the SOA framework for SOA services. Essentially, you must pass these exceptions back to the Event Manager framework when they arise. Two methods are available within the Event Manager framework that enable you to do this easily. One method is:

.HandlerStatus.AddCIException(&arrExceptions as array of Record, &Severity as⇒
 string)

This method copies all exceptions from a standard CI exception array to the exception log of the event handler according to the specified severity of the exception. Severity codes are (E)rror, (W)arning, and (M)essage.

You can specify multiple severity codes by concatenation. Thus, if you want to copy both errors and warnings, then specify a severity code of EW. A blank severity code causes the copying of all exceptions regardless of severity.

The structure of the exception array that is passed into this method is identical to the exception array that the FUNCLIB_CI version of the standard HCM CI wrapper uses. This is an array of Record.CI_EXCEPTIONS. If you're using the FUNCLIB_CI wrapper, you can pass the exception array that you use with those functions into this method.

If you are calling a CI directly, then you need to first ensure that you have instructed PeopleTools to redirect CI exceptions from the screen to the %Session.PSMessages object. Then, you need to copy the items from PSMessages into an array of Record.CI_EXCEPTIONS so that these exceptions can be passed into this method.

Another method is:

.HandlerStatus.AddSOAException(&inException As HMCR_TYPES:ExceptionTypes:Exception⇒
Type_v1_0:ExceptionType)

This method copies all exceptions from a standard SOA exception type structure to the exception log of the event handler.

When invoking SOA services, the system always executes them in a try/catch block. Typically, the event handler executes the services and catches certain defined exceptions that arise. A catch-all exception always catches any exceptions that have not been specifically called out.

SOA exceptions differ slightly from CI exceptions in that when invoking an SOA service, you manage only one (if any) exception. The exception that you pass into this method is the exception structure that you catch in your try/catch block.

The following example shows an SOA service invocation passing exceptions back to the Event Manager:

     *      try
     *        &MyService.MyServiceManager.LocateService(&ServiceName); 
     *        &MyService.DoService();
     *          catch <NamedException1> &e1
     *                &myEvent.HandlerStatus.AddSOAException(&e1.ServiceException);
     *                --- other exception processing ---
     *          catch <NamedException2> &e2
     *                &myEvent. HandlerStatus.AddSOAException(&e2.Service⇒
Exception);
     *                --- other exception processing ---
     *          . . .
     *          catch HMCR_FRAMEWORK:ServiceFramework:baseClasses:baseException⇒
 &e0    
     *                &myEvent. HandlerStatus.AddSOAException(&e0.Service⇒
Exception);
     *                --- other exception processing ---
     *      end-try 

In this code, the items appearing as <NamedExceptionX> represent the application-specific exceptions that are registered in the SOA registry. These are exceptions that are known to be thrown by the indicated SOA service. The class named HMCR_FRAMEWORK:ServiceFramework:baseClasses:baseException is for the catch-all exception, defining the shape of the generic SOA exception.

Providing Trace/Debug Information

The Registered Handlers page of the Event Registry component provides a Trace check box to indicate whether to write trace/debug information to the execution log of the event handler. This functionality is available only when you set the Logging field for the event handler to the All value.

When you select the Trace check box, the event handler produces trace/debug in the handler execution log. The amount of trace/debug information that the system writes to the log is determined by the developer of the event handler. Generally, you must provide enough information so that anyone examining the event handler log can trace the path of the execution that the event handler has taken.

The system makes the selected value of this check box available to the event handler using the HandlerTraceEnabled Boolean property of the event. When this property is True, the event handler creates trace/debug entries in the exceptions structure. PeopleSoft software provides the following method to make the creation of these entries easier:

&myEvent.HandlerStatus.AddTraceEntry(&Heading, &Detail);

In the preceding code, &Heading is the string that appears as the first line of the entry, and &Detail is a long string containing whatever detailed trace/debug information you want to create.

The system displays the trace/debug information in the Event Monitor component.

No fixed rules are associated with the trace/debug entries that the event handler generates. This is a judgement call. You should provide whatever entries you think are useful to debug or troubleshoot the event handler code.

Create trace/debug entries only when the .HandlerTraceEnabled property is True. Thus, the code looks similar to:

   If &myEvent.HandlerTraceEnabled Then
      &myEvent.HandlerStatus.AddTraceEntry("Method ABC()", "No data returned for:⇒
 " | &Emplid);
   End-If; 

Testing Event Handlers and Events

This section provides an overview of event testing and discusses how to:

• Test an event handler.

• Test an event.

Understanding Event Testing

Generally in a production environment, you raise events by making a change to application data through a component or by running a PeopleTools Application Engine process. When the event is raised, the Event Manager framework executes the event handlers registered with the event as defined in the Event Registry component. When testing events, you should begin at the lowest level, which is the event handler, and then work your way up to the highest level, which is the business process that raises the event. Thus, to test events:

1. Test the event handler in standalone mode through the Handler Tester component.

2. Test the event independent of the business process that raises the event through the Event Tester component.

3. Test the event in the context of the business process by executing the business process that raises the event through the component or PeopleTools Application Engine process.

Pages Used to Test Event Handlers and Events

Testing an Event Handler

Access the Event Manager - Test an Event Handler page (Enterprise Components, Events & Notifications, Event Framework, Handler Tester).

Event

Select the event to which the event handler that you want to execute is registered. Event handlers must always execute within the context of an event.

Record

When you select an event, the system also allows you to select a record to provide data for the event. Typically, this is the record in the database from which a data change normally raises the event. however you can select a different record. The record must have the same keys as the record that normally raises the event. After you select a record the fields from the record are populated on the page with fields to enter values, expected types and lengths. Enter your sample data for your Event Test in the value fields and click the Execute button. The system displays in the Registered Handlers group box the event handlers that are registered with the selected event in the local database through the Event Registry component.

Registered Handlers

This group box displays the event handlers that you have registered with the selected event in the Event Registry component.

Handler Exceptions

Use this group box to view results of the event handler execution. The system displays event keys, exceptions, and trace information that is associated with the execution of the event handler.

Event Fields

Use this group box to enter values for each of the fields that are part of the selected event and record. These are the values that the system passes into the event handler during the test. The system does not perform any validation on the data that you enter in the Value fields. Be sure to enter the correct format for data values and use uppercase or lowercase values for character data as appropriate. The system makes this data available to the event handlers as the Context Record for the Event.

Testing an Event

Access the Event Manager - Raise an Ad-Hoc Test Event page (Enterprise Components, Events & Notifications, Event Framework, Event Tester).

Event	Select the event that you want to raise. You can only raise events that are active in the local event registry. If you are unsure of the status of an event, select the event in the Event field and click the Event Info button.
Record	When you select an event, the system allows you to select a record to provide data for this event. Typically, this is the record in the database from which a data change normally raises the event. The system displays the Event Fields grid so that you can enter data to pass to the event.
	Click the Event Info button to view select information from the Event Registry component about the selected event and its registered event handlers. The system displays the Registry Info group box, which contains the event details.
Raise Event	Click this button to have the Event Manager framework raise the event with the specified event data. The system processes the event and executes all active event handlers that you have registered to the event exactly as if you have raised it from the normal business process such as through a component or PeopleTools Application Engine process. The system displays a message below the Record field indicating whether you have successfully raised the event. This message also includes the event ID on the local node and, for multichannel events, the event channel.
Launch Event Monitor	After you raise the event, click this link to view the execution status of the raised event. The system launches the Event Monitor component in a new browser window and automatically displays information for this particular event instance.

Registry Info

Use this group box to view select information from the Event Registry component about the selected event and its registered handlers. The system displays this group box only if you select an event and click the Event Info button. To change any of this data, you must access the Event Registry component for the selected event.

Event Fields

Use this group box to enter values for each of the event fields that are part of the event that you are raising. The system does not perform any validation on the data that you enter in the Value fields. Be sure to enter the correct format for data values and use uppercase or lowercase values for character data as appropriate. The system makes these field values available to the event handlers as the context record for the event.

Raising Events

After you determine that an occurrence of the business event exists that the event in the Event Manager framework represents, you can raise the event in the Event Manager framework.

The Event Manager framework provides an API that creates and raises events. The API code is:

import EOEN_MVC:EOEN_MODEL:EOENInterface;
Local EOEN_MVC:EOEN_MODEL:EOENInterface &myEvent;
         Local Record &recContext;
         
         &myEvent = create EOEN_MVC:EOEN_MODEL:EOENInterface("", 0);
         
         &recContext = &rsContextRec(1).GetRecord(Record.CONTEXT_REC);
         &myEvent.AddContextRecord(&recContext);
         &myEvent.RaiseEvent("EventName");

Pass the name of the event to the Event Interface, which returns an instance of the event object. Add the context record and then execute the RaiseEvent method on the event object.

Important! Instantiating an event object does not automatically raise the event. You must invoke the event's RaiseEvent method to raise the event and initiate subsequent Event Manager framework processing.

In the following example, assume that we have created an event called AssignmentMilitaryRankChanged. This event represents the business event of assigning or updating the military rank of a person's assignment (Job record) instance. Whenever the rank attribute of the assignment (Job record row) changes, we want to raise the event. Here is the pseudocode to add to the JOB_MIL.MIL_WORN_RANK:SavePostChange PeopleCode event for the Job component:

import EOEN_MVC:EOEN_MODEL:EOENInterface;

/**********************************************************/
/* FUNCTION:    GetPriorRank                              */
/* Inputs:      &rsJOB As Rowset, &CurrentRow as number   */
/* Returns:     none                                      */
/*                                                        */
/* Get Prior Worn Rank                                    */
/**********************************************************/
Function GetPriorRank(&rsJOB As Rowset, &CurrentRow As integer,⇒
 &PRIOR_ROW As integer, &PRIOR_RANK As string);
   
   Local date &PRIORDT = Date3(1900, 1, 1);
   Local integer &PRIORSEQ = 0;
   Local date &JOB_Effdt = &rsJOB(&CurrentRow).JOB.EFFDT.Value;
   Local integer &JOB_Effseq = &rsJOB(&CurrentRow).JOB.EFFSEQ.Value;
   Local integer &i;
   
   &PRIOR_ROW = 0;
   &PRIOR_RANK = " ";
   For &i = 1 To &rsJOB.RowCount;
      Local date &FETCH_EFFDT = &rsJOB(&i).JOB.EFFDT.Value;
      Local integer &FETCH_EFFSEQ = &rsJOB(&i).JOB.EFFSEQ.Value;
      If (&FETCH_EFFDT < &JOB_Effdt Or
            (&FETCH_EFFDT = &JOB_Effdt And
               &FETCH_EFFSEQ < &JOB_Effseq)) And
            (&FETCH_EFFDT > &PRIORDT Or
               (&FETCH_EFFDT = &PRIORDT And
                  &FETCH_EFFSEQ > &PRIORSEQ)) Then
         &PRIORDT = &FETCH_EFFDT;
         &PRIORSEQ = &FETCH_EFFSEQ;
         &PRIOR_ROW = &i;
      End-If;
   End-For;
   If &PRIOR_ROW > 0 Then
      &PRIOR_RANK = &rsJOB(&PRIOR_ROW).GetRowset(Scroll.JOB_MIL)⇒
(1).JOB_MIL.MIL_WORN_RANK.Value;
   End-If;
End-Function;

/***************************************************************************/
/* FUNCTION:    RaiseMilitaryRankEvent                                     */
/* Inputs:      JOB_MIL rowset, Current row                                */
/* Returns:     none                                                       */
/*                                                                         */
/* Check if MilitaryRankEvent event should be raised                       */
/* if a change has been done:                                              */
/*    - Worn rank changed                                                  */
/*    - Row deleted and the worn rank is different from the previous one   */
/*    - Row inserted and the worn rank is different from the previous one  */
/* the event will be raised                                                */
/***************************************************************************/
Function RaiseMilitaryRankEvent(&rsJOB As Rowset)
   If INSTALLATION.MILITARY = "Y" Then
      Local integer &PRIOR_ROW;
      Local string &PRIOR_RANK;
      Local boolean &RaiseEvent = False;
      Local integer &i;
      
      For &i = 1 To &rsJOB.RowCount
         /* Get current Job row and Worn Rank value */
         Local Row &rowJOB = &rsJOB.GetRow(&i);
         Local Rowset &rsJOB_MIL = &rowJOB.GetRowset(Scroll.JOB_MIL);
         /*************************/
         /* Rank has been updated */
         /*************************/
         If &rsJOB_MIL(1).JOB_MIL.MIL_WORN_RANK.IsChanged Or
               (&rowJOB.JOB.EFFDT.IsChanged And
                  Not &rowJOB.IsNew) Then
            If All(&rsJOB_MIL(1).JOB_MIL.MIL_WORN_RANK.Value) Then
               &RaiseEvent = True;
               Break;
            End-If;
            
         Else
            /***************/
            /* New JOB row */
            /***************/
            If &rowJOB.IsNew Then
               /* Get previous Rank */
               GetPriorRank(&rsJOB, &i, &PRIOR_ROW, &PRIOR_RANK);
               If &PRIOR_ROW > 0 Then
                  If &rsJOB_MIL(1).JOB_MIL.MIL_WORN_RANK.Value <> &PRIOR_RANK And
                        All(&rsJOB_MIL(1).JOB_MIL.MIL_WORN_RANK.Value) Then
                     &RaiseEvent = True;
                     Break;
                  End-If;
               Else
                  /* No previous Rank */
                  If All(&rsJOB_MIL(1).JOB_MIL.MIL_WORN_RANK.Value) Then
                     &RaiseEvent = True;
                     Break;
                  End-If;
               End-If;
            Else
               /****************************/
               /* JOB row has been deleted */
               /****************************/
               If &rowJOB.IsDeleted Then
                  /* Get previous Rank */
                  GetPriorRank(&rsJOB, &i, &PRIOR_ROW, &PRIOR_RANK);
                  If &PRIOR_ROW > 0 Then
                     If &rsJOB_MIL(1).JOB_MIL.MIL_WORN_RANK.Value <> &PRIOR_RANK And
                           All(&rsJOB_MIL(1).JOB_MIL.MIL_WORN_RANK.Value) Then
                        &RaiseEvent = True;
                        Break;
                     End-If;
                  Else
                     /* No previous Rank */
                     If All(&rsJOB_MIL(1).JOB_MIL.MIL_WORN_RANK.Value) Then
                        &RaiseEvent = True;
                        Break;
                     End-If;
                  End-If;
               End-If;
            End-If;
         End-If;
      End-For;
      If &RaiseEvent Then
         
         Local EOEN_MVC:EOEN_MODEL:EOENInterface &myEvent;
         Local Record &recContext;
         
         &myEvent = create EOEN_MVC:EOEN_MODEL:EOENInterface("", 0);
         
         &recContext = &rsJOB_MIL(1).GetRecord(Record.JOB_MIL);
         &myEvent.AddContextRecord(&recContext);
         &myEvent.RaiseEvent("AssignmentMilitaryRankChanged");
      End-If;
   End-If;
End-Function;

If GetLevel0()(1).GetRowset(Scroll.JOB).GetRow(CurrentRowNumber(1)).RowNumber = 1 Then
   RaiseMilitaryRankEvent(GetLevel0()(1).GetRowset(Scroll.JOB));
End-If;

The lines in the preceding code that deal with the action of raising the event are:

Local EOEN_MVC:EOEN_MODEL:EOENInterface &myEvent;
         Local Record &recContext;
         
         &myEvent = create EOEN_MVC:EOEN_MODEL:EOENInterface("", 0);
         
         &recContext = &rsJOB_MIL(1).GetRecord(Record.JOB_MIL);
         &myEvent.AddContextRecord(&recContext);
         &myEvent.RaiseEvent("AssignmentMilitaryRankChanged");

Important! During the course of raising an event, the framework causes certain tracking and logging information to be stored in the database. Because of this, events can be raised only from PeopleCode events that normally allow database updates. More specifically, events can be raised only from SavePreChange, SavePostChange, and Workflow PeopleCode events.

Monitoring Events

This section discusses how to:

• Review event instances.

• Review event handler executions.

• Review event handler exceptions.

Pages Used to Monitor Events

Reviewing Event Instances

Access the Event Manager - Monitor page (Enterprise Components, Events & Notifications, Event Framework, Event Monitor).

Search Criteria

Enter the search criteria for retrieving event instances. At a minimum, you must select at least one criterion to retrieve results. Use the remaining fields to narrow your search results.

Event Instances

Review the logged event instances that meet your search criteria. The system displays instances for only the events and event handlers that you have configured in the local Event Registry component to be logged. You set the logging option for an event by selecting the Logging Enabled check box for an event on the Define Events page. Note that the process that raises the event waits for all registered synchronous event handlers to execute.

Reviewing Event Handler Executions

Access the Event Monitor - Handlers page (click the Handlers link for an event instance on the Event Manager - Monitor page).

The system displays information for only the event handlers that you have configured to log executions. To log event handler executions, you must set the Logging option for a specific event handler and event combination on the Registered Handlers page.

The upper portion of the page displays information about the selected event instance that caused the event handler execution as well as the date and time that the local node began processing the event. For local events, the Processed date and time is generally the same as the date and time that the event was created. For remote events, the Processed date and time indicates when the local node received notification of the remote event from PeopleTools Integration Broker.

Handler Execution

This grid lists the event handlers that the system executed on the local database in response to the selected event instance.

If no event handler execution information is available, the system displays an informative message that indicates the possible reasons why no information is available. Possible reasons are that no event handlers are registered for the selected event, no event handlers are configured to log execution for the selected event, no synchronous event handlers are registered for the selected event and PeopleTools Integration Broker has not yet executed any asynchronous event handlers, or no event handlers executed for the event.

Reviewing Event Handler Exceptions

Access the Event Monitor - Handler Exceptions page (click the Display Exceptions button on the Event Monitor - Handlers page).

The upper portion of the page displays information about the selected event instance that caused the event handler execution as well as the date and time that the local node began processing the event.

Events raised in a remote database are visible in the Event Monitor component only after the local node receives and processes the asynchronous event message, and only if you have enabled logging for the event when registering the event in the local database through the Event Registry component.

Note. If you inactivate the PeopleTools Integration Broker Service Operation for the generic event message, then the local Event Manager framework does not process any remote events and thus no remote events will be visible in the Event Monitor component.

Viewing Event Summaries

This section discusses how to:

• View a summary of event instances.

• View failed event handlers.

Pages Used View Event Summaries

Viewing a Summary of Event Instances

Access the Event Manager - Event Summary page (Enterprise Components, Events & Notifications, Event Framework, Event Summary).

Refresh

Click to refresh the statistics that the system displays on this page. The option to refresh is useful in production environments in which the raising and processing of events occurs frequently.

Summary Grid

Use this group box to review statistics for every event that has logged instances in the local database. The system displays event instances for only the events that are configured for logging through the Event Registry component in the local database. The system groups the logged event instances by event and node combination.

Viewing Failed Event Handlers

Access the Event Manager - Failed Handlers page (click the Failed Handlers link for an event handler on the Event Manager - Event Summary page).

The system lists information about each failed event handler. Click the Details button to access the Event Monitor - Handler Exceptions page, where you can view the exceptions that the failed event handlers produced.

Viewing Exceptions for Failed Handlers

Access the Event Manager - Handler Exceptions page (click the Details link for an event handler on the Event Manager - Failed Handlers page).

Details for the exception are displayed.