How to use

keySet

method

in

org.apache.sis.xml.IdentifierMap

/**
 * Tests the handling of duplicated authorities.
 */
@Test
public void testDuplicatedAuthorities() {
  final List<Identifier> identifiers = new ArrayList<>();
  assertTrue(identifiers.add(new IdentifierMapEntry(ID,   "myID1")));
  assertTrue(identifiers.add(new IdentifierMapEntry(UUID, "myUUID")));
  assertTrue(identifiers.add(new IdentifierMapEntry(ID,   "myID2")));
  final IdentifierMap map = new ModifiableIdentifierMap(identifiers);
  assertEquals("Duplicated authorities shall be filtered.", 2, map.size());
  assertEquals("Duplicated authorities shall still exist.", 3, identifiers.size());
  assertEquals("myID1",  map.get(ID));
  assertEquals("myUUID", map.get(UUID));
  final Iterator<Citation> it = map.keySet().iterator();
  assertTrue(it.hasNext());
  assertSame(ID, it.next());
  it.remove();
  assertTrue(it.hasNext());
  assertSame(UUID, it.next());
  assertFalse("Duplicated authority shall have been removed.", it.hasNext());
  assertEquals(1, identifiers.size());
  assertEquals(1, map.size());
}