This chapter contains the following topics:
A real-time event is a notification that a business transaction has occurred in JD Edwards EnterpriseOne. You can use a JD Edwards EnterpriseOne HTML client to generate a real-time event on the JD Edwards EnterpriseOne server. Real-time events can be used for both synchronous and asynchronous processing.
An example of synchronous processing is to use real-time events to update an auction site that uses JD Edwards EnterpriseOne as a back-end solution. A user enters a new item for auction, which triggers a transaction into the JD Edwards EnterpriseOne system. The system captures the transaction and sends a notification to an interoperability server that communicates the information to a web engine to update the HTML pages so that all of the auction users can see the new item.
You can also use real-time event generation for asynchronous processing. For example, an online store sends orders to different vendors (business to business), captures the transactions, and enters the orders into the vendors' systems. A user buys a book. The vendor enters a purchase order to the book publisher and sends a notification to the shipping company to pick up the book and deliver it. The book order can be completed as a purchase order transaction with JD Edwards EnterpriseOne, but the shipping request requires that the data is packaged into a commonly agreed-upon format for the shipping company to process.
This section provide an overview about generating real-time events and discusses:
Real-time event APIs.
Example code for creating events.
Contains one partial event. A single event is useful if the receiver requires that events be generated per system call. You can also use single events with different event types.
Contains multiple partial events. An aggregate event is useful if the receiver requires a document that contains multiple events. For example, a supply chain solution might want the complete sales order provided as one event that contains multiple partial events.
Contains only single events. Composite events are useful if the customer has multiple receivers, some requiring single events and some requiring a complete event similar to an aggregate event.
These APIs are available for you to generate real-time events:
jdeIEO_EventInit
jdeIEO_EventAdd
jdeIEO_EventGetCount
jdeIEO_EventGetData
jdeIEO_EventFreeData
jdeIEO_EventFinalize
jdeIEO_CreateSingleEvent
jdeIEO_IsEventTypeEnabled
These steps and the accompanying example code illustrate how to create a single event:
Design the data structure for the real-time event.
typedef struct tagDSD55RTTEST
{
char szOrderCo[6];
char szBusinessUnit[13];
char szOrderType[3];
MATH_NUMERIC mnOrderNo;
MATH_NUMERIC mnLineNo;
JDEDATE jdRequestDate;
char szItemNo[27];
char szDescription1[31];
MATH_NUMERIC mnQtyOrdered;
MATH_NUMERIC mnUnitPrice;
MATH_NUMERIC mnUnitCost;
char szUserID[11];
} DSD55RTTEST, *LPDSD55RTTEST;
Define the data structure object in the business function header file.
Modify the business function source to call jdeIEO_CreateSingleEvent.
JDEBFRTN(ID) JDEBFWINAPI RealTimeEventsTest (LPBHVRCOM lpBhvrCom,
LPVOID lpVoid, LPDSD55REALTIME lpDS)
{
/* Define Data Structure Object */
DSD55RTTEST zRTTest = {0};
IEO_EVENT_RETURN eEventReturn = eEventCallSuccess;
IEO_EVENT_ID szEventID ={0};
()Populate required members
/* Now call the API */
szEventID = jdeIEO_CreateSingleEvent { lpBhvrCom,
"RealTimeEventsTest",
"JDERTOUT",
"SalesOrder",
"D55RTTEST",
&zRTTest,
sizeof(zRTTest),
0,
&eEventReturn };
/* Error in jdeFeedCallObjectEvent is not a critical error
and should only be treated as a warning */
if( eEventReturn != eEventCallSuccess )
{
/* LOG the Warning and return */
return ER_WARNING;
This sample code illustrates how to create an aggregate event:
DSD55RTTEST zD55TEST01 = {0};
DSD55RTTEST zD55TEST02 = {0};
DSD55RTTEST zD55TEST03 = {0};
IEO_EVENT_RETURN eEventReturn = eEventCallSuccess;
IEO_EVENT_ID szEventID;
szEventID = jdeIEO_EventInit (lpBhvrCom, eEventAggregate, "MyFunction1",
"JDESOOUT", "EventScope1", 0, &eEventReturn);
eEventReturn = jdeIEO_EventAdd (lpBhvrCom, szEventID, "MyFunction2", NULL,
"D55TEST01", &zD55TEST01, sizeof(zD55TEST01),0);
eEventReturn = jdeIEO_EventAdd (lpBhvrCom, szEventID, "MyFunction3", NULL,
"D55TEST02", &zD55TEST02, sizeof(zD55TEST02),0);
eEventReturn = jdeIEO_EventAdd (lpBhvrCom, szEventID, "MyFunction3", NULL,
"D55TEST03", &zD55TEST03, sizeof(zD55TEST03),0);
eEventReturn = jdeIEO_EventFinalize (lpBhvrCom, szEventID,"MyFunction4",0);
This sample code illustrates how to create a composite event:
IEO_EVENT_RETURN eEventReturn = 0;
IEO_EVENT_ID szEventID;
eEventReturn = eEventCallSuccess;
szEventID = jdeIEO_EventInit (lpBhvrCom, eEventComposite, "MyFunction1",
"JDESOOUT","EventScope1",0,&eEventReturn,0);
eEventReturn = jdeIEO_EventAdd ( lpBhvrCom, szEventID, "MyFunction2",
"SODOCBEGIN", "D55TEST01", &zD55TEST01, sizeof(zD55TEST01),0);
eEventReturn = jdeIEO_EventAdd ( lpBhvrCom, szEventID, "MyFunction3",
"SOITEMADD", "EventScope3", "D55TEST02", &zD55TEST02, sizeof(zD55TEST02),0);
eEventReturn = jdeIEO_EventFinalize (lpBhvrCom, szEventID, "MyFunction4",0);
Errors that are returned by the system calls might not be critical enough to stop the business process. The system flags non-critical errors as warnings and logs them in the log file.