somSetException - Example Code

/* IDL declaration of class X:  */
interface X : SOMObject {
exception OUCH {long code1; long code2; };
void foo(in long arg) raises (OUCH);
};
/* implementation of foo method */
SOM_Scope void SOMLINK foo(X somSelf, Environment *ev, long arg)
{
X_OUCH *exception_params; /* X_OUCH struct is defined
                                    in X's usage bindings    */

   if (arg > 5) /* then this is a very bad error */
   {
      exception_params = (X_OUCH*)SOM_Malloc(sizeof(X_OUCH));
      exception_params->code1 = arg;
      exception_params->code2 = arg-5;
      somSetException(ev, USER_EXCEPTION, ex_X_OUCH,
                          exception_params);
      /* the Environment ev now contains an X_OUCH exception, with
      * the specified exception_params struct. The constant
      * ex_X_OUCH is defined in foo.h. Note that exception_params
      *  must be malloced.
      */
      return;
   }
...
}

main()
{
   Environment *ev;
   X x;

   somEnvironmentNew();
   x = Xnew();
   ev = somGetGlobalEnvironment();
   X_foo(x, ev, 23);
   if (ev->_major != NO_EXCEPTION) {
   printf("foo exception = %s\n", somExceptionId(ev));
   printf("code1 = %d\n",
   ((X_OUCH*) somExceptionValue(ev))->code1);
   /* finished handling exception. */
   /* free the copied id and the original X_OUCH structure: */
   somExceptionFree(ev);
   }
...
}