@SuppressWarnings("rawtypes")
public <T> List<T> getByKeys(Class<T> clazz, Iterable<Key<T>> keys) {
Map<String, List<Key>> kindMap = new HashMap<String, List<Key>>();
List<T> entities = new ArrayList<T>();
// String clazzKind = (clazz==null) ? null :
// getMapper().getCollectionName(clazz);
for (Key<?> key : keys) {
mapr.updateKind(key);
// if (clazzKind != null && !key.getKind().equals(clazzKind))
// throw new IllegalArgumentException("Types are not equal (" +
// clazz + "!=" + key.getKindClass() +
// ") for key and method parameter clazz");
//
if (kindMap.containsKey(key.getKind())) kindMap.get(key.getKind()).add(key);
else kindMap.put(key.getKind(), new ArrayList<Key>(Collections.singletonList((Key) key)));
}
for (String kind : kindMap.keySet()) {
List<Object> objIds = new ArrayList<Object>();
List<Key> kindKeys = kindMap.get(kind);
for (Key key : kindKeys) {
objIds.add(key.getId());
}
List kindResults = find(kind, null).disableValidation().filter("_id in", objIds).asList();
entities.addAll(kindResults);
}
// TODO: order them based on the incoming Keys.
return entities;
}
/** Test key from kind and name. */
public void testKeyFromKindAndName() {
Key key = new Key(kind, name);
assertEquals(kind, key.getKind());
assertEquals(name, key.getName());
assertNull(key.getParent());
assertEquals(0L, key.getId());
}
/** Test key from kind, parent and name. */
public void testKeyFromKindParentAndName() {
Key parent = new Key(kind);
Key key = new Key(kind, parent, name);
assertEquals(kind, key.getKind());
assertEquals(name, key.getName());
assertEquals(parent, key.getParent());
assertEquals(0L, key.getId());
}
/** Test key from kind, parent and id. */
public void testKeyFromKindParentAndId() {
Key parent = new Key(kind);
Key key = new Key(kind, parent, id);
assertEquals(kind, key.getKind());
assertNull(key.getName());
assertEquals(id, key.getId());
assertEquals(parent, key.getParent());
}
public Key<?> exists(Object entityOrKey) {
entityOrKey = ProxyHelper.unwrap(entityOrKey);
Key<?> key = getKey(entityOrKey);
Object id = key.getId();
if (id == null)
throw new MappingException("Could not get id for " + entityOrKey.getClass().getName());
String collName = key.getKind();
if (collName == null) collName = getCollection(key.getKindClass()).getName();
return find(collName, key.getKindClass()).filter(Mapper.ID_KEY, key.getId()).getKey();
}
public <T> UpdateResults<T> update(Key<T> key, UpdateOperations<T> ops) {
Class<T> clazz = (Class<T>) key.getKindClass();
if (clazz == null) clazz = (Class<T>) mapr.getClassFromKind(key.getKind());
return updateFirst(
createQuery(clazz).disableValidation().filter(Mapper.ID_KEY, key.getId()), ops);
}