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 Nov 2020 |
18 | * \brief |
19 | */ |
20 | |
21 | #pragma once |
22 | |
23 | #include "collection_query.h" |
24 | #include "equal_task.h" |
25 | |
26 | namespace proxima { |
27 | namespace be { |
28 | namespace query { |
29 | |
30 | /*! |
31 | * EqualQuery |
32 | */ |
33 | class EqualQuery : public ContextImpl, public QueryKeyContext { |
34 | public: |
35 | //! Constructor |
36 | EqualQuery(uint64_t traceID, const proto::GetDocumentRequest *req, |
37 | index::IndexServicePtr index, MetaWrapperPtr meta_wrapper, |
38 | ExecutorPtr executor_ptr, ProfilerPtr profiler_ptr, |
39 | proto::GetDocumentResponse *resp); |
40 | |
41 | //! Destructor |
42 | ~EqualQuery() override; |
43 | |
44 | public: |
45 | //! Validate query object, 0 for valid, otherwise non zero returned |
46 | int validate() const override; |
47 | |
48 | //! Retrieve IOMode of query |
49 | IOMode mode() const override; |
50 | |
51 | //! Retrieve the type of query, Readonly |
52 | QueryType type() const override; |
53 | |
54 | //! Prepare resources, 0 for success, otherwise failed |
55 | int prepare() override; |
56 | |
57 | //! Evaluate query, and collection feedback |
58 | int evaluate() override; |
59 | |
60 | //! Finalize query object |
61 | int finalize() override; |
62 | |
63 | //! Retrieve collection name |
64 | const std::string &collection() const override; |
65 | |
66 | //! Retrieve primary_key |
67 | uint64_t primary_key() const override; |
68 | |
69 | private: |
70 | //! Equal tasks |
71 | EqualTaskPtrList tasks_{}; |
72 | |
73 | // Request pointer readonly field |
74 | const proto::GetDocumentRequest *request_{nullptr}; |
75 | |
76 | // Response pointer |
77 | proto::GetDocumentResponse *response_{nullptr}; |
78 | }; |
79 | |
80 | |
81 | } // namespace query |
82 | } // namespace be |
83 | } // namespace proxima |
84 | |