private static Object[] prepareArgsForEffectorFromMap(Effector<?> eff, Map m) {
m = Maps.newLinkedHashMap(m); // make editable copy
List newArgs = Lists.newArrayList();
int newArgsNeeded = eff.getParameters().size();
boolean mapUsed = false;
for (int index = 0; index < eff.getParameters().size(); index++) {
ParameterType<?> it = eff.getParameters().get(index);
Object v;
if (truth(it.getName()) && m.containsKey(it.getName())) {
// argument is in the map
v = m.remove(it.getName());
} else if (it instanceof BasicParameterType && ((BasicParameterType) it).hasDefaultValue()) {
// finally, default values are used to make up for missing parameters
v = ((BasicParameterType) it).getDefaultValue();
} else {
throw new IllegalArgumentException(
"Invalid arguments (missing argument " + it + ") for effector " + eff + ": " + m);
}
newArgs.add(TypeCoercions.coerce(v, it.getParameterClass()));
newArgsNeeded--;
}
if (newArgsNeeded > 0)
throw new IllegalArgumentException(
"Invalid arguments (missing " + newArgsNeeded + ") for effector " + eff + ": " + m);
return newArgs.toArray(new Object[newArgs.size()]);
}
public static Map prepareArgsForEffectorAsMapFromArray(Effector<?> eff, Object args[]) {
int newArgsNeeded = eff.getParameters().size();
List l = Lists.newArrayList();
l.addAll(Arrays.asList(args));
Map newArgs = new LinkedHashMap();
for (int index = 0; index < eff.getParameters().size(); index++) {
ParameterType<?> it = eff.getParameters().get(index);
if (l.size() >= newArgsNeeded)
// all supplied (unnamed) arguments must be used; ignore map
newArgs.put(it.getName(), l.remove(0));
// TODO do we ignore arguments in the same order that groovy does?
else if (!l.isEmpty() && it.getParameterClass().isInstance(l.get(0))) {
// if there are parameters supplied, and type is correct, they get applied before default
// values
// (this is akin to groovy)
newArgs.put(it.getName(), l.remove(0));
} else if (it instanceof BasicParameterType && ((BasicParameterType) it).hasDefaultValue()) {
// finally, default values are used to make up for missing parameters
newArgs.put(it.getName(), ((BasicParameterType) it).getDefaultValue());
} else {
throw new IllegalArgumentException(
"Invalid arguments (count mismatch) for effector " + eff + ": " + args);
}
newArgsNeeded--;
}
if (newArgsNeeded > 0)
throw new IllegalArgumentException(
"Invalid arguments (missing " + newArgsNeeded + ") for effector " + eff + ": " + args);
if (!l.isEmpty())
throw new IllegalArgumentException(
"Invalid arguments (" + l.size() + " extra) for effector " + eff + ": " + args);
return newArgs;
}
/**
* Takes arguments, and returns an array of arguments suitable for use by the Effector according
* to the ParameterTypes it exposes.
*
* <p>The args can be: 1. an array of ordered arguments 2. a collection (which will be
* automatically converted to an array) 3. a single argument (which will then be wrapped in an
* array) 4. a map containing the (named) arguments 5. an array or collection single entry of a
* map (treated same as 5 above) 6. a semi-populated array or collection that also containing a
* map as first arg - uses ordered args in array, but uses named values from map in preference. 7.
* semi-populated array or collection, where default values will otherwise be used.
*/
public static Object[] oldPrepareArgsForEffector(Effector<?> eff, Object args) {
// attempt to coerce unexpected types
Object[] argsArray;
if (args == null) {
argsArray = new Object[0];
} else if (args.getClass().isArray()) {
argsArray = (Object[]) args;
} else {
if (args instanceof Collection) {
argsArray = ((Collection) args).toArray(new Object[((Collection) args).size()]);
} else {
argsArray = new Object[] {args};
}
}
// if args starts with a map, assume it contains the named arguments
// (but only use it when we have insufficient supplied arguments)
List l = Lists.newArrayList();
l.addAll(Arrays.asList(argsArray));
Map m =
(argsArray.length > 0 && argsArray[0] instanceof Map
? Maps.newLinkedHashMap((Map) l.remove(0))
: null);
List newArgs = Lists.newArrayList();
int newArgsNeeded = eff.getParameters().size();
boolean mapUsed = false;
for (int index = 0; index < eff.getParameters().size(); index++) {
ParameterType<?> it = eff.getParameters().get(index);
if (l.size() >= newArgsNeeded)
// all supplied (unnamed) arguments must be used; ignore map
newArgs.add(l.remove(0));
else if (truth(m) && truth(it.getName()) && m.containsKey(it.getName()))
// some arguments were not supplied, and this one is in the map
newArgs.add(m.remove(it.getName()));
else if (index == 0 && Map.class.isAssignableFrom(it.getParameterClass())) {
// if first arg is a map it takes the supplied map
newArgs.add(m);
mapUsed = true;
} else if (!l.isEmpty() && it.getParameterClass().isInstance(l.get(0)))
// if there are parameters supplied, and type is correct, they get applied before default
// values
// (this is akin to groovy)
newArgs.add(l.remove(0));
else if (it instanceof BasicParameterType && ((BasicParameterType) it).hasDefaultValue())
// finally, default values are used to make up for missing parameters
newArgs.add(((BasicParameterType) it).getDefaultValue());
else
throw new IllegalArgumentException(
"Invalid arguments (count mismatch) for effector " + eff + ": " + args);
newArgsNeeded--;
}
if (newArgsNeeded > 0)
throw new IllegalArgumentException(
"Invalid arguments (missing " + newArgsNeeded + ") for effector " + eff + ": " + args);
if (!l.isEmpty())
throw new IllegalArgumentException(
"Invalid arguments (" + l.size() + " extra) for effector " + eff + ": " + args);
if (truth(m) && !mapUsed)
throw new IllegalArgumentException(
"Invalid arguments (" + m.size() + " extra named) for effector " + eff + ": " + args);
return newArgs.toArray(new Object[newArgs.size()]);
}