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 | |
23 | namespace proxima { |
24 | namespace be { |
25 | namespace query { |
26 | |
27 | /** |
28 | * Operator class listed all supported operation in DSL or query |
29 | */ |
30 | enum 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 | */ |
43 | enum class IOMode { |
44 | READONLY, |
45 | READWRITE, |
46 | }; |
47 | |
48 | |
49 | } // namespace query |
50 | } // namespace be |
51 | } // namespace proxima |
52 | |