1/**
2 * Copyright 2021 Alibaba, Inc. and its affiliates. All Rights Reserved.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 *
16 * \author guonix
17 * \date Oct 2020
18 * \brief
19 */
20
21#pragma once
22
23namespace proxima {
24namespace be {
25namespace query {
26
27/**
28 * Operator class listed all supported operation in DSL or query
29 */
30enum QueryType {
31 // Undefined query type
32 UNDEFINED,
33 // K-NearestNeighbor
34 KNN,
35 // Equal operator,
36 EQUAL
37};
38
39
40/*!
41 * IOMode of query
42 */
43enum class IOMode {
44 READONLY,
45 READWRITE,
46};
47
48
49} // namespace query
50} // namespace be
51} // namespace proxima
52