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annotate Framework/SQLite/SQLiteDatabase.cpp @ 522:c49136b34891 large-queries tip

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use a prepared statement for InsertOrUpdateMetadata
author Alain Mazy <am@orthanc.team>
date Fri, 05 Jul 2024 09:15:54 +0200
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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) 2017-2023 Osimis S.A., Belgium
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6 * Copyright (C) 2024-2024 Orthanc Team SRL, Belgium
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7 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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8 *
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9 * This program is free software: you can redistribute it and/or
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10 * modify it under the terms of the GNU Affero General Public License
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11 * as published by the Free Software Foundation, either version 3 of
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12 * the License, or (at your option) any later version.
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13 *
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14 * This program is distributed in the hope that it will be useful, but
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15 * WITHOUT ANY WARRANTY; without even the implied warranty of
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16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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17 * Affero General Public License for more details.
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18 *
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19 * You should have received a copy of the GNU Affero General Public License
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20 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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21 **/
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24 #include "SQLiteDatabase.h"
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26 #include "SQLiteStatement.h"
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27 #include "SQLiteTransaction.h"
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28 #include "../Common/ImplicitTransaction.h"
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30 #include <OrthancException.h>
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32 namespace OrthancDatabases
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33 {
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34 void SQLiteDatabase::Execute(const std::string& sql)
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35 {
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36 if (!connection_.Execute(sql))
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37 {
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38 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database);
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39 }
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40 }
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42
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43 IPrecompiledStatement* SQLiteDatabase::Compile(const Query& query)
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44 {
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45 return new SQLiteStatement(*this, query);
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46 }
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49 namespace
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50 {
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51 class SQLiteImplicitTransaction : public ImplicitTransaction
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52 {
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53 private:
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54 SQLiteDatabase& db_;
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55
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56 protected:
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57 virtual IResult* ExecuteInternal(IPrecompiledStatement& statement,
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58 const Dictionary& parameters) ORTHANC_OVERRIDE
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59 {
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60 return dynamic_cast<SQLiteStatement&>(statement).Execute(*this, parameters);
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61 }
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63 virtual void ExecuteWithoutResultInternal(IPrecompiledStatement& statement,
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64 const Dictionary& parameters) ORTHANC_OVERRIDE
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65 {
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66 dynamic_cast<SQLiteStatement&>(statement).ExecuteWithoutResult(*this, parameters);
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67 }
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69 public:
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70 explicit SQLiteImplicitTransaction(SQLiteDatabase& db) :
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71 db_(db)
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72 {
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73 }
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75 virtual bool DoesTableExist(const std::string& name) ORTHANC_OVERRIDE
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76 {
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77 return db_.GetObject().DoesTableExist(name.c_str());
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78 }
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79
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80 virtual bool DoesTriggerExist(const std::string& name) ORTHANC_OVERRIDE
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81 {
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82 return false;
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83 }
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84
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85 virtual void ExecuteMultiLines(const std::string& query) ORTHANC_OVERRIDE
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86 {
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87 db_.GetObject().Execute(query);
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88 }
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89 };
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90 }
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92 ITransaction* SQLiteDatabase::CreateTransaction(TransactionType type)
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93 {
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94 switch (type)
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95 {
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96 case TransactionType_Implicit:
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97 return new SQLiteImplicitTransaction(*this);
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98
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99 case TransactionType_ReadOnly:
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100 case TransactionType_ReadWrite:
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101 return new SQLiteTransaction(*this);
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102
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103 default:
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104 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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105 }
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106 }
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107 }