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annotate Framework/MySQL/MySQLResult.h @ 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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22
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23
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24 #pragma once
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25
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26 #if ORTHANC_ENABLE_MYSQL != 1
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27 # error MySQL support must be enabled to use this file
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28 #endif
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30 #include "../Common/ResultBase.h"
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31 #include "MySQLStatement.h"
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32
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33 namespace OrthancDatabases
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34 {
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35 class MySQLResult : public ResultBase
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36 {
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37 private:
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38 MySQLDatabase& database_;
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39 MySQLStatement& statement_;
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40 bool done_;
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41
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42 void Step();
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43
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44 protected:
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45 virtual IValue* FetchField(size_t index) ORTHANC_OVERRIDE;
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47 public:
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48 MySQLResult(MySQLDatabase& db,
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49 MySQLStatement& statement);
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50
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51 virtual ~MySQLResult() ORTHANC_OVERRIDE;
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53 virtual bool IsDone() const ORTHANC_OVERRIDE
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54 {
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55 return done_;
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56 }
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57
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58 virtual void Next() ORTHANC_OVERRIDE;
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59 };
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60 }