annotate PostgreSQL/Plugins/PostgreSQLStorageArea.cpp @ 522:c49136b34891 large-queries tip

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 "PostgreSQLStorageArea.h"
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25 #include "PostgreSQLDefinitions.h"
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27 #include "../../Framework/PostgreSQL/PostgreSQLTransaction.h"
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28 #include "../../Resources/Orthanc/Plugins/OrthancPluginCppWrapper.h"
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30 #include <Compatibility.h> // For std::unique_ptr<>
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31 #include <Logging.h>
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34 namespace OrthancDatabases
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35 {
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36 void PostgreSQLStorageArea::ConfigureDatabase(PostgreSQLDatabase& db,
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37 const PostgreSQLParameters& parameters,
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38 bool clearAll)
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39 {
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40 if (parameters.HasLock())
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41 {
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42 db.AdvisoryLock(POSTGRESQL_LOCK_STORAGE);
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43 }
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45 {
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46 PostgreSQLDatabase::TransientAdvisoryLock lock(db, POSTGRESQL_LOCK_DATABASE_SETUP);
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48 if (clearAll)
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49 {
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50 db.ClearAll();
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51 }
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53 {
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54 PostgreSQLTransaction t(db, TransactionType_ReadWrite);
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56 if (!db.DoesTableExist("StorageArea"))
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57 {
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58 db.ExecuteMultiLines("CREATE TABLE IF NOT EXISTS StorageArea("
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59 "uuid VARCHAR NOT NULL PRIMARY KEY,"
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60 "content OID NOT NULL,"
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61 "type INTEGER NOT NULL)");
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62
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63 // Automatically remove the large objects associated with the table
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64 db.ExecuteMultiLines("CREATE OR REPLACE RULE StorageAreaDelete AS ON DELETE "
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65 "TO StorageArea DO SELECT lo_unlink(old.content);");
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66 }
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67
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68 t.Commit();
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69 }
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74 PostgreSQLStorageArea::PostgreSQLStorageArea(const PostgreSQLParameters& parameters,
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75 bool clearAll) :
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76 StorageBackend(PostgreSQLDatabase::CreateDatabaseFactory(parameters),
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77 parameters.GetMaxConnectionRetries())
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78 {
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79 {
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80 AccessorBase accessor(*this);
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81 PostgreSQLDatabase& database = dynamic_cast<PostgreSQLDatabase&>(accessor.GetManager().GetDatabase());
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82 ConfigureDatabase(database, parameters, clearAll);
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83 }
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84 }
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85 }