/**
* Compare two N-Quads. The implementation and exection of the comparison depends on the mode
* settings.
*/
@Override
public int compare(NQuad quad1, NQuad quad2) {
int result = 0;
switch (this.mode) {
case NQuadSorting.SUBJECT_SORT:
result = quad1.subject.compareTo(quad2.subject);
break;
case NQuadSorting.PREDICATE_SORT:
result = quad1.predicate.compareTo(quad2.predicate);
break;
case NQuadSorting.OBJECT_SORT:
result = quad1.object.compareTo(quad2.object);
break;
case NQuadSorting.CONTEXT_SORT:
result = quad1.context.compareTo(quad2.context);
break;
}
if (result == 0) {
// backup: default comparator if equal values
result = quad1.compareTo(quad2);
}
return result;
}
@Override
protected NQuad fromLine(String line) {
return NQuad.fromString(line);
}
@Override
protected String toLine(NQuad object) {
return object.toString();
}