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 "executor/bthread_task.h" |
24 | #include "context.h" |
25 | |
26 | namespace proxima { |
27 | namespace be { |
28 | namespace query { |
29 | |
30 | //! Predefine class |
31 | class EqualTask; |
32 | |
33 | //! Alias for EqualTask |
34 | using EqualTaskPtr = std::shared_ptr<EqualTask>; |
35 | using EqualTaskPtrList = std::list<EqualTaskPtr>; |
36 | |
37 | |
38 | /*! |
39 | * EqualTask |
40 | */ |
41 | class EqualTask : public BthreadTask { |
42 | public: |
43 | //! Constructor |
44 | EqualTask(index::SegmentPtr segment, QueryKeyContext *context); |
45 | |
46 | //! Destructor |
47 | ~EqualTask() override; |
48 | |
49 | public: |
50 | //! Retrieve hit count |
51 | uint32_t hit() const; |
52 | |
53 | //! Get the forward |
54 | const index::QueryResult &forward() const; |
55 | |
56 | private: |
57 | // Do search |
58 | int do_run() override; |
59 | |
60 | private: |
61 | //! Hit count |
62 | uint32_t hit_count_{0}; |
63 | |
64 | //! Segment handler |
65 | index::SegmentPtr segment_{nullptr}; |
66 | |
67 | //! Query Param |
68 | QueryKeyContext *context_{nullptr}; |
69 | |
70 | //! Forward |
71 | index::QueryResult forward_{}; |
72 | }; |
73 | |
74 | |
75 | } // namespace query |
76 | } // namespace be |
77 | } // namespace proxima |
78 | |