private Iterator4 checkDuplicates(CompositeIterator4 executeAllCandidates) {
return Iterators.filter(
executeAllCandidates,
new Predicate4() {
private TreeInt ids = new TreeInt(0);
public boolean match(Object current) {
int id = ((Integer) current).intValue();
if (ids.find(id) != null) {
return false;
}
ids = (TreeInt) ids.add(new TreeInt(id));
return true;
}
});
}
public void testFilteredIterables() {
final List<Integer> data = createSequentialList(TEST_SEQ_SIZE);
final List<Integer> expected = new LinkedList<Integer>();
final List<Integer> filtered = new LinkedList<Integer>();
for (Integer i = 0; i < data.size(); i++) {
Integer x = data.get(i);
if (i % 2 == 0) {
expected.add(x);
} else {
filtered.add(x);
}
}
final Iterable<Integer> res =
Iterators.filter(
data,
new Comparable<Integer>() {
public int compareTo(Integer i) {
return filtered.contains(i) ? 0 : -1;
}
});
assertEquals(expected, res);
}