/** Converts a {@link Map} of integers to a {@link TargetMapping}. */
public static TargetMapping target(Map<Integer, Integer> map, int sourceCount, int targetCount) {
final PartialFunctionImpl mapping =
new PartialFunctionImpl(sourceCount, targetCount, MappingType.FUNCTION);
for (Map.Entry<Integer, Integer> entry : map.entrySet()) {
mapping.set(entry.getKey(), entry.getValue());
}
return mapping;
}
public static Mapping target(List<Integer> sources, int sourceCount) {
final int targetCount = sources.size();
final PartialFunctionImpl mapping =
new PartialFunctionImpl(sourceCount, targetCount, MappingType.FUNCTION);
for (int target = 0; target < targetCount; target++) {
int source = sources.get(target);
mapping.set(source, target);
}
return mapping;
}
public static Mapping source(List<Integer> targets, int targetCount) {
final int sourceCount = targets.size();
final PartialFunctionImpl mapping =
new PartialFunctionImpl(sourceCount, targetCount, MappingType.FUNCTION);
for (int source = 0; source < sourceCount; source++) {
int target = targets.get(source);
mapping.set(source, target);
}
return mapping;
}
public static TargetMapping target(
Function1<Integer, Integer> function, int sourceCount, int targetCount) {
final PartialFunctionImpl mapping =
new PartialFunctionImpl(sourceCount, targetCount, MappingType.FUNCTION);
for (int source = 0; source < sourceCount; source++) {
Integer target = function.apply(source);
if (target != null) {
mapping.set(source, target);
}
}
return mapping;
}