Advanced Queuing - Oracle

Asynchronous Notifications
/* Register for notification: */
printf("allocating subscription handle\n");
subscrhp[0] = (OCISubscription *)0;
(void) OCIHandleAlloc((dvoid *) envhp, (dvoid **)&subscrhp[0],
(ub4) OCI_HTYPE_SUBSCRIPTION,
(size_t) 0, (dvoid **) 0);
printf("setting subscription name\n");
(void) OCIAttrSet((dvoid *) subscrhp[0], (ub4) OCI_HTYPE_SUBSCRIPTION,
(dvoid *) "WS.WS_BOOKEDORDERS_QUE:BOOKED_ORDERS",
(ub4) strlen("WS.WS_BOOKEDORDERS_QUE:BOOKED_ORDERS"),
(ub4) OCI_ATTR_SUBSCR_NAME, errhp);
printf("setting subscription callback\n");
(void) OCIAttrSet((dvoid *) subscrhp[0], (ub4) OCI_HTYPE_SUBSCRIPTION,
(dvoid *) notifyCB, (ub4) 0,
(ub4) OCI_ATTR_SUBSCR_CALLBACK, errhp);
(void) OCIAttrSet((dvoid *) subscrhp[0], (ub4) OCI_HTYPE_SUBSCRIPTION,
(dvoid *)&ctx, (ub4)sizeof(ctx),
(ub4) OCI_ATTR_SUBSCR_CTX, errhp);
printf("setting subscription namespace\n");
(void) OCIAttrSet((dvoid *) subscrhp[0], (ub4) OCI_HTYPE_SUBSCRIPTION,
(dvoid *) &namespace, (ub4) 0,
(ub4) OCI_ATTR_SUBSCR_NAMESPACE, errhp);
printf("Registering \n");
checkerr(errhp, OCISubscriptionRegister(svchp, subscrhp, 1, errhp,
OCI_DEFAULT));
sleep_time = (ub4)atoi(argv[1]);
printf ("waiting for %d s", sleep_time);
sleep(sleep_time);
printf("Exiting");
exit(0);
}
void checkerr(errhp, status)
LNOCIError *errhp;
sword status;
{
text errbuf[512];
8-102 Oracle9i Application Developer’s Guide - Advanced Queuing