/**
* Assign the given list of units to the emergency.
*
* @param units The given list of units.
* @post All the units in the given list are assigned | forall (u in units) | u.isAssigned()
* @post All the units in the given list are handling the emergency of this UnitNeeded | forall (u
* in units) | u.getEmergency().equals(this.getEmergency())
* @throws InvalidEmergencyException If the units can't be assigned to the emergency (when
* canAssignUnitsToEmergency fails)
* @see #canAssignUnitsToEmergency(Set)
*/
@Override
public synchronized void assignUnitsToEmergency(Set<Unit> units)
throws InvalidEmergencyException {
ArrayList<Unit> options = new ArrayList<Unit>(units.size());
Iterator<Unit> it = units.iterator();
while (it.hasNext()) {
options.add(it.next());
}
if (!canAssignUnitsToEmergency(units)) {
throw new InvalidEmergencyException(
"Units can't be assigned to the emergency, harm to assignment constraints.");
}
for (Emergency e : getDisaster().getEmergencies()) {
ConcreteUnitsNeeded CUN = e.getUnitsNeeded();
Set<Unit> unitsForEmergency = CUN.generateProposal(options);
try {
e.assignUnits(unitsForEmergency);
} catch (InvalidEmergencyStatusException ex) {
// We assume this can't happen.
Logger.getLogger(DerivedUnitsNeeded.class.getName()).log(Level.SEVERE, null, ex);
}
for (Unit u : unitsForEmergency) {
addWorkingUnits(u);
}
options.removeAll(unitsForEmergency);
}
}
/**
* Checks if the given units can be assigned to the emergency.
*
* @param units The units to be assigned.
* @return True if all the given units are effective, unique and can be assigned and the
* constraint for allocation is passed; otherwise false.
*/
public boolean canAssignUnitsToEmergency(Set<Unit> units) {
ArrayList<Unit> options = new ArrayList<Unit>(units.size());
Iterator<Unit> it = units.iterator();
while (it.hasNext()) {
options.add(it.next());
}
for (Emergency e : getDisaster().getEmergencies()) {
ConcreteUnitsNeeded CUN = e.getUnitsNeeded();
Set<Unit> unitsForEmergency = CUN.generateProposal(options);
if (unitsForEmergency.isEmpty() || !e.canAssignUnits(unitsForEmergency)) {
return false;
}
}
return true;
}