/**
* Tests to see if the specified metric name is known for the given attribute data type.
*
* @param type the attribute type
* @param s the name of the distance metric to look for
* @return true if <code>s</code> is the name of a known metric for the type
* @throws UnknownDistanceException if the type is unknown. XXX: shouldn't this be the other way
* around?
*/
public static final boolean isDistanceFor(Measurable type, String s)
throws UnknownDistanceException {
Map<String, Distance> values = distanceMap.get(type.getType());
if (values != null) {
return values.containsKey(s.toLowerCase());
} else {
throw new UnknownDistanceException(type, s);
}
}
/**
* Gets the distance functor for the given type.
*
* @param type the attribute data type
* @param metric the metric name
* @return the metric
* @throws UnknownDistanceException if the metric isn't found
*/
public static final Distance getDistanceFunctor(Measurable type, String metric)
throws UnknownDistanceException {
return Distances.getDistanceFunctor(type.getType(), metric);
}