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annotate Framework/Odbc/OdbcStatement.cpp @ 522:c49136b34891 large-queries tip

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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 "OdbcStatement.h"
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25
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26 #include "../../Resources/Orthanc/Plugins/OrthancPluginCppWrapper.h" // For ORTHANC_PLUGINS_VERSION_IS_ABOVE
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27 #include "OdbcEnvironment.h"
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29 #include <Logging.h>
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30 #include <OrthancException.h>
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31
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32 #include <sqlext.h>
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35 namespace OrthancDatabases
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36 {
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37 OdbcStatement::OdbcStatement(SQLHSTMT databaseHandle)
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38 {
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39 if (!SQL_SUCCEEDED(SQLAllocHandle(SQL_HANDLE_STMT, databaseHandle, &handle_)))
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40 {
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41 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database, "Cannot allocate statement");
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42 }
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43 }
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46 OdbcStatement::~OdbcStatement()
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47 {
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48 if (!SQL_SUCCEEDED(SQLFreeHandle(SQL_HANDLE_STMT, handle_)))
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49 {
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50 LOG(ERROR) << "Cannot destruct statement";
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51 }
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52 }
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55 std::string OdbcStatement::FormatError()
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56 {
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57 return OdbcEnvironment::FormatError(handle_, SQL_HANDLE_STMT);
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58 }
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61 void OdbcStatement::CheckCollision(Dialect dialect)
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62 {
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63 SQLINTEGER native = -1;
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64 SQLCHAR stateBuf[SQL_SQLSTATE_SIZE + 1];
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65 SQLSMALLINT stateLength = 0;
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67 for (SQLSMALLINT recNum = 1; ; recNum++)
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68 {
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69 if (SQL_SUCCEEDED(SQLGetDiagField(SQL_HANDLE_STMT, handle_,
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70 recNum, SQL_DIAG_NATIVE, &native, SQL_IS_INTEGER, 0)) &&
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71 SQL_SUCCEEDED(SQLGetDiagField(SQL_HANDLE_STMT, handle_,
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72 recNum, SQL_DIAG_SQLSTATE, &stateBuf, sizeof(stateBuf), &stateLength)))
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73 {
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74 const std::string state(reinterpret_cast<const char*>(stateBuf));
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75
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76 if (state == "40001" ||
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77 (dialect == Dialect_MySQL && native == 1213) ||
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78 (dialect == Dialect_MSSQL && native == 1205))
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79 {
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80 #if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 9, 2)
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81 throw Orthanc::OrthancException(Orthanc::ErrorCode_DatabaseCannotSerialize);
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82 #else
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83 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database, "Collision between multiple writers");
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84 #endif
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85 }
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86 else if (state == "08S01")
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87 {
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88 throw Orthanc::OrthancException(Orthanc::ErrorCode_DatabaseUnavailable);
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89 }
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90
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91 }
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92 else
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93 {
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94 return;
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95 }
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96 }
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97 }
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98 }