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comparison Framework/Loaders/BasicFetchingStrategy.h @ 708:51976977d2d3

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reorganization
author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 20 May 2019 11:20:01 +0200
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children 2d8ab34c8c91
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707:d1feb89ea742 708:51976977d2d3
1 /**
2 * Stone of Orthanc
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 * Copyright (C) 2017-2019 Osimis S.A., Belgium
6 *
7 * This program is free software: you can redistribute it and/or
8 * modify it under the terms of the GNU Affero General Public License
9 * as published by the Free Software Foundation, either version 3 of
10 * the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Affero General Public License for more details.
16 *
17 * You should have received a copy of the GNU Affero General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
19 **/
20
21
22 #pragma once
23
24 #include "IFetchingItemsSorter.h"
25 #include "IFetchingStrategy.h"
26
27 #include <memory>
28
29 namespace OrthancStone
30 {
31 class BasicFetchingStrategy : public IFetchingStrategy
32 {
33 private:
34 class ContentItem
35 {
36 private:
37 unsigned int item_;
38 unsigned int quality_;
39
40 public:
41 ContentItem(unsigned int item,
42 unsigned int quality) :
43 item_(item),
44 quality_(quality)
45 {
46 }
47
48 unsigned int GetItem() const
49 {
50 return item_;
51 }
52
53 unsigned int GetQuality() const
54 {
55 return quality_;
56 }
57 };
58
59 std::auto_ptr<IFetchingItemsSorter> sorter_;
60 std::vector<unsigned int> nextQuality_;
61 unsigned int maxQuality_;
62 std::vector<ContentItem> content_;
63 size_t position_;
64 unsigned int blockSize_;
65
66 void Schedule(unsigned int item,
67 unsigned int quality);
68
69 public:
70 BasicFetchingStrategy(IFetchingItemsSorter* sorter, // Takes ownership
71 unsigned int maxQuality);
72
73 virtual unsigned int GetItemsCount() const
74 {
75 return sorter_->GetItemsCount();
76 }
77
78 virtual unsigned int GetMaxQuality() const
79 {
80 return maxQuality_;
81 }
82
83 // WARNING - This parameters is only considered during the next
84 // call to SetCurrent().
85 void SetBlockSize(unsigned int size);
86
87 virtual bool GetNext(unsigned int& item,
88 unsigned int& quality);
89
90 virtual void SetCurrent(unsigned int item);
91
92 virtual void RecycleFurthest(unsigned int& item);
93 };
94 }