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annotate OrthancFramework/Sources/Cache/MemoryStringCache.cpp @ 5169:8b74aa4f3515

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enforce the existence of the patient/study/instance while creating its archive
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 24 Feb 2023 18:07:35 +0100
parents 43e613a7756b
children 0ea402b4d901
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2022 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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7 *
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8 * This program is free software: you can redistribute it and/or
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9 * modify it under the terms of the GNU Lesser General Public License
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10 * as published by the Free Software Foundation, either version 3 of
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11 * the License, or (at your option) any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful, but
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 * Lesser General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU Lesser General Public
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19 * License along with this program. If not, see
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20 * <http://www.gnu.org/licenses/>.
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21 **/
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22
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23
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24 #include "../PrecompiledHeaders.h"
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25 #include "MemoryStringCache.h"
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26
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27 namespace Orthanc
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28 {
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29 class MemoryStringCache::StringValue : public ICacheable
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30 {
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31 private:
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32 std::string content_;
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33
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34 public:
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35 explicit StringValue(const std::string& content) :
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36 content_(content)
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37 {
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38 }
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39
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40 explicit StringValue(const char* buffer, size_t size) :
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41 content_(buffer, size)
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42 {
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43 }
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44
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45 const std::string& GetContent() const
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46 {
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47 return content_;
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48 }
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49
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50 virtual size_t GetMemoryUsage() const
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51 {
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52 return content_.size();
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53 }
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54 };
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55
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56 size_t MemoryStringCache::GetMaximumSize()
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57 {
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58 return cache_.GetMaximumSize();
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59 }
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60
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61 void MemoryStringCache::SetMaximumSize(size_t size)
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62 {
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63 cache_.SetMaximumSize(size);
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64 }
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65
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66 void MemoryStringCache::Add(const std::string& key,
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67 const std::string& value)
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68 {
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69 cache_.Acquire(key, new StringValue(value));
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70 }
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71
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72 void MemoryStringCache::Add(const std::string& key,
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73 const void* buffer,
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74 size_t size)
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75 {
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76 cache_.Acquire(key, new StringValue(reinterpret_cast<const char*>(buffer), size));
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77 }
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78
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79 void MemoryStringCache::Invalidate(const std::string &key)
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80 {
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81 cache_.Invalidate(key);
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82 }
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83
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84 bool MemoryStringCache::Fetch(std::string& value,
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85 const std::string& key)
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86 {
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87 MemoryObjectCache::Accessor reader(cache_, key, false /* multiple readers are allowed */);
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88
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89 if (reader.IsValid())
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90 {
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91 value = dynamic_cast<StringValue&>(reader.GetValue()).GetContent();
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92 return true;
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93 }
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94 else
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95 {
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96 return false;
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97 }
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98 }
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99 }