AbstractDynamoDao extends AbstractDao<M,P,K,I> { protected M loadByIndex(String indexName, String key, Object value) { Optional<M> model = loadByIndexOpt(indexName, key, value); return model.orElseThrow(() -> new DataNotFoundException(getDisplayModelName() + " not found: " + value)); } AbstractDynamoDao(Class<M> modelClass, Class<P> partialClass, AmazonDynamoDB db, String tableName);  AbstractDynamoDao(Class<M> modelClass, Class<P> partialClass, AmazonDynamoDB db, String tableName, ItemMapper<M> modelMapper, ItemMapper<P> partialMapper); String getTableName(); Table getTable(); Optional<M> loadOpt(K id); Optional<P> loadOpt(K id, Iterable<String> fields); @Override Iterable<M> iterateAll(); Results<M,K> scanAll(); @Override M create(P partial, Instant createAt, I creatorId); void update(K id, Update<P> update, Instant updateAt, I updaterId); M updateAndReturn(K id, Update<P> update, Instant updateAt, I updaterId); Update<P> updateOf(P partial); Update<P> updateOf(P partial, Iterable<String> removeFields); @Override void delete(K id); abstract List<KeySchemaElement> getKeySchema(); abstract List<AttributeDefinition> getAttributeDefinitions(); List<GlobalSecondaryIndex> getGlobalSecondaryIndexes(); void initTable(); void dropTable(); void copyTable(AmazonDynamoDB sourceDb, String sourceTable); void ensureIndexes();  }
@Test public void testLoadByIndex() throws Exception { TestModel created = dao.create(TestModel.builder() .name("Ian White") .email("ian@example.com") .birthday(LocalDate.of(1980, 5, 12)) .build()); TestModel loaded = dao.loadByIndex("email", "email", "ian@example.com"); assertEquals(created, loaded); }