/** {@inheritDoc} */
@Override
public void receiveUpdate(String itemName, State newStatus) {
if (itemRegistry != null) {
try {
GenericItem item = (GenericItem) itemRegistry.getItem(itemName);
boolean isAccepted = false;
if (item.getAcceptedDataTypes().contains(newStatus.getClass())) {
isAccepted = true;
} else {
// Look for class hierarchy
for (Class<? extends State> state : item.getAcceptedDataTypes()) {
try {
if (!state.isEnum()
&& state.newInstance().getClass().isAssignableFrom(newStatus.getClass())) {
isAccepted = true;
break;
}
} catch (InstantiationException e) {
logger.warn("InstantiationException on {}", e.getMessage()); // Should never happen
} catch (IllegalAccessException e) {
logger.warn("IllegalAccessException on {}", e.getMessage()); // Should never happen
}
}
}
if (isAccepted) {
item.setState(newStatus);
} else {
logger.debug(
"Received update of a not accepted type ("
+ newStatus.getClass().getSimpleName()
+ ") for item "
+ itemName);
}
} catch (ItemNotFoundException e) {
logger.debug("Received update for non-existing item: {}", e.getMessage());
}
}
}
private GroupItem applyGroupFunction(
GenericItem baseItem, ModelGroupItem modelGroupItem, ModelGroupFunction function) {
List<State> args = new ArrayList<State>();
for (String arg : modelGroupItem.getArgs()) {
State state = TypeParser.parseState(baseItem.getAcceptedDataTypes(), arg);
if (state == null) {
logger.warn(
"State '{}' is not valid for group item '{}' with base type '{}'",
new Object[] {arg, modelGroupItem.getName(), modelGroupItem.getType()});
args.clear();
break;
} else {
args.add(state);
}
}
GroupFunction groupFunction = null;
switch (function) {
case AND:
if (args.size() == 2) {
groupFunction = new ArithmeticGroupFunction.And(args.get(0), args.get(1));
break;
} else {
logger.error("Group function 'AND' requires two arguments. Using Equality instead.");
}
case OR:
if (args.size() == 2) {
groupFunction = new ArithmeticGroupFunction.Or(args.get(0), args.get(1));
break;
} else {
logger.error("Group function 'OR' requires two arguments. Using Equality instead.");
}
case NAND:
if (args.size() == 2) {
groupFunction = new ArithmeticGroupFunction.NAnd(args.get(0), args.get(1));
break;
} else {
logger.error("Group function 'NOT AND' requires two arguments. Using Equality instead.");
}
break;
case NOR:
if (args.size() == 2) {
groupFunction = new ArithmeticGroupFunction.NOr(args.get(0), args.get(1));
break;
} else {
logger.error("Group function 'NOT OR' requires two arguments. Using Equality instead.");
}
case COUNT:
if (args.size() == 1) {
groupFunction = new ArithmeticGroupFunction.Count(args.get(0));
break;
} else {
logger.error("Group function 'COUNT' requires one argument. Using Equality instead.");
}
case AVG:
groupFunction = new ArithmeticGroupFunction.Avg();
break;
case SUM:
groupFunction = new ArithmeticGroupFunction.Sum();
break;
case MIN:
groupFunction = new ArithmeticGroupFunction.Min();
break;
case MAX:
groupFunction = new ArithmeticGroupFunction.Max();
break;
default:
logger.error(
"Unknown group function '" + function.getName() + "'. Using Equality instead.");
}
if (groupFunction == null) {
groupFunction = new GroupFunction.Equality();
}
return new GroupItem(modelGroupItem.getName(), baseItem, groupFunction);
}
