final SCInstance scInstance) {
Evaluator eval = scInstance.getEvaluator();
Collection internalEvents = step.getAfterStatus().getEvents();
for (Iterator iter = step.getAfterStatus().getStates().iterator();
iter.hasNext();) {
State s = (State) iter.next();
Context ctx = scInstance.getContext(s);
Invoke i = s.getInvoke();
if (i != null && scInstance.getInvoker(s) == null) {
String src = i.getSrc();
if (src == null) {
String srcexpr = i.getSrcexpr();
Object srcObj = null;
try {
ctx.setLocal(NAMESPACES_KEY, i.getNamespaces());
srcObj = eval.eval(ctx, srcexpr);
ctx.setLocal(NAMESPACES_KEY, null);
src = String.valueOf(srcObj);
} catch (SCXMLExpressionException see) {
errRep.onError(ErrorConstants.EXPRESSION_ERROR,
see.getMessage(), i);
}
}
String source = src;
PathResolver pr = i.getPathResolver();
if (pr != null) {
source = i.getPathResolver().resolvePath(src);
}
String ttype = i.getTargettype();
Invoker inv = null;
try {
inv = scInstance.newInvoker(ttype);
} catch (InvokerException ie) {
TriggerEvent te = new TriggerEvent(s.getId()
+ ".invoke.failed", TriggerEvent.ERROR_EVENT);
internalEvents.add(te);
continue;
}
inv.setParentStateId(s.getId());
inv.setSCInstance(scInstance);
List params = i.params();
Map args = new HashMap();
for (Iterator pIter = params.iterator(); pIter.hasNext();) {
Param p = (Param) pIter.next();
String argExpr = p.getExpr();
Object argValue = null;
ctx.setLocal(NAMESPACES_KEY, p.getNamespaces());
// Do we have an "expr" attribute?
if (argExpr != null && argExpr.trim().length() > 0) {
// Yes, evaluate and store as parameter value
try {
argValue = eval.eval(ctx, argExpr);
} catch (SCXMLExpressionException see) {
errRep.onError(ErrorConstants.EXPRESSION_ERROR,
see.getMessage(), i);
}
} else {
// No. Does value of "name" attribute refer to a valid
// location in the data model?
try {
argValue = eval.evalLocation(ctx, p.getName());
if (argValue == null) {
// Generate error, 4.3.1 in WD-scxml-20080516
TriggerEvent te = new TriggerEvent(s.getId()
+ ERR_ILLEGAL_ALLOC,
TriggerEvent.ERROR_EVENT);
internalEvents.add(te);
}
} catch (SCXMLExpressionException see) {
errRep.onError(ErrorConstants.EXPRESSION_ERROR,
see.getMessage(), i);
}
}
ctx.setLocal(NAMESPACES_KEY, null);
args.put(p.getName(), argValue);
}
try {
inv.invoke(source, args);
} catch (InvokerException ie) {
TriggerEvent te = new TriggerEvent(s.getId()
+ ".invoke.failed", TriggerEvent.ERROR_EVENT);
internalEvents.add(te);
continue;
}
scInstance.setInvoker(s, inv);