AnnotationUtils { public static boolean isDB(String name) { return DB_CLASSES.containsKey(name); }  static String annotatedName(Class<?> clazz); static String annotatedAlias(Class<? extends BaseDB> cls); static String annotatedAlias(String name); static IOType annotatedIoType(Class<? extends AlgoOperator> cls); static ParamInfo<String> tableAliasParamKey(String name); static ParamInfo<String> tableAliasParamKey(Class<? extends BaseDB> dbClazz); static ParamInfo<String> dynamicParamKey(String key); static List<String> allDBAndOpNames(); static List<String> allFileSystemNames(); static BaseDB createDB(String name, Params parameter); static BaseFileSystem<?> createFileSystem(String name, Params parameter); static boolean isDB(String name); static boolean isDBHasTimestamp(String name); static boolean isIoOpHasTimestamp(String name, IOType type); static boolean isFileSystem(String name); static AlgoOperator createOp(String name, IOType type, Params parameter);  }
@Test public void testIsDB() { Assert.assertTrue(AnnotationUtils.isDB("test_fake_db_1")); Assert.assertTrue(AnnotationUtils.isDB("test_fake_db_2")); Assert.assertFalse(AnnotationUtils.isDB("test_fake_op_1")); Assert.assertFalse(AnnotationUtils.isDB("test_fake_op_2")); Assert.assertFalse(AnnotationUtils.isDB("dummy1")); Assert.assertFalse(AnnotationUtils.isDB("dummy2")); }