IndexImpl implements Index<T> { @Override public Collection values(Column column) { checkNonNullColumnObject(column); lock(); try { AbstractIndex index = getIndex((ColumnImpl) column); return new ArrayList(index.values()); } finally { unlock(); } } IndexImpl(ColumnStore<T> columnStore); @Override Class<T> getIndexClass(); @Override String getIndexName(); @Override int count(Column column, Object value); int count(String key, Object value); Iterable<T> get(String key, Object value); @Override Iterable<T> get(Column column, Object value); @Override boolean isSortable(Column column); @Override Number getMinValue(Column column); @Override Number getMaxValue(Column column); Iterable<Map.Entry<Object, Set<T>>> get(Column column); @Override Collection values(Column column); @Override int countValues(Column column); @Override int countElements(Column column); Object put(String key, Object value, T element); Object put(Column column, Object value, T element); void remove(String key, Object value, T element); void remove(Column column, Object value, T element); Object set(String key, Object oldValue, Object value, T element); Object set(Column column, Object oldValue, Object value, T element); void clear();  }
@Test public void testValues() { IndexImpl<Node> index = generateEmptyIndex(); NodeImpl[] nodes = generateNodesWithUniqueAttributes(index, true); putAll(nodes, index); for (Column col : index.columnStore) { if (col.isIndexed()) { Collection collection = index.values(col); ObjectSet<Object> expected = new ObjectOpenHashSet<Object>(); for (NodeImpl n : nodes) { Object obj = n.getAttribute(col); expected.add(obj); } Assert.assertEquals(collection.size(), expected.size()); Assert.assertEquals(index.countValues(col), expected.size()); Assert.assertEquals(new ObjectOpenHashSet<Object>(collection), expected); } } }