// This method and matchArguments are somewhat duplicate, but this method allows us to provide
// more precise errors in the common
// case where there is no override for a given function. This is thus probably worth the minor
// code duplication.
private static void validateTypes(
String keyspace,
Function fun,
List<? extends AssignmentTestable> providedArgs,
String receiverKs,
String receiverCf)
throws InvalidRequestException {
if (providedArgs.size() != fun.argTypes().size())
throw new InvalidRequestException(
String.format(
"Invalid number of arguments in call to function %s: %d required but %d provided",
fun.name(), fun.argTypes().size(), providedArgs.size()));
for (int i = 0; i < providedArgs.size(); i++) {
AssignmentTestable provided = providedArgs.get(i);
// If the concrete argument is a bind variables, it can have any type.
// We'll validate the actually provided value at execution time.
if (provided == null) continue;
ColumnSpecification expected = makeArgSpec(receiverKs, receiverCf, fun, i);
if (!provided.testAssignment(keyspace, expected).isAssignable())
throw new InvalidRequestException(
String.format(
"Type error: %s cannot be passed as argument %d of function %s of type %s",
provided, i, fun.name(), expected.type.asCQL3Type()));
}
}
private static void declare(Function fun) {
synchronized (declared) {
List<Function> functions = declared.get(fun.name());
if (functions == null) {
functions = new CopyOnWriteArrayList<>();
List<Function> existing = declared.putIfAbsent(fun.name(), functions);
if (existing != null) functions = existing;
}
functions.add(fun);
}
}
public static ColumnSpecification makeArgSpec(
String receiverKs, String receiverCf, Function fun, int i) {
return new ColumnSpecification(
receiverKs,
receiverCf,
new ColumnIdentifier("arg" + i + '(' + fun.name().toString().toLowerCase() + ')', true),
fun.argTypes().get(i));
}
