public void append(Object value) {
boolean done = false;
RDFList current = this;
while (!done) {
if (current.getFirst() == null) {
current.setFirst(value);
current.setRest(getOWLModel().getRDFNil());
done = true;
} else if (current.getRest() == null || getOWLModel().getRDFNil().equals(current.getRest())) {
RDFSNamedClass listClass = (RDFSNamedClass) getDirectType();
RDFList newRest = (RDFList) listClass.createAnonymousInstance();
newRest.setFirst(value);
newRest.setRest(getOWLModel().getRDFNil());
current.setRest(newRest);
done = true;
} else {
current = current.getRest(); // Recursion into tail
}
}
}
public static void removeListValue(
RDFResource resource, RDFProperty property, RDFList li, int index) {
if (index == 0) {
RDFList rest = li.getRest();
if (li.getOWLModel().getRDFNil().equals(rest)) {
rest = null;
}
li.setRest(null);
resource.setPropertyValue(property, rest);
li.delete();
} else {
RDFList pred = null;
while (index > 0) {
index--;
pred = li;
li = li.getRest();
}
RDFList rest = li.getRest();
li.setRest(null);
pred.setRest(rest);
li.delete();
}
}
