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annotate Framework/Odbc/OdbcEnvironment.cpp @ 446:9e039e65d68e pg-transactions

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notes
author Alain Mazy <am@osimis.io>
date Mon, 15 Jan 2024 15:21:43 +0100
parents 3d6886f3e5b3
children ecd0b719cff5
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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) 2021-2023 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 Affero 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 * Affero 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 Affero General Public License
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19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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20 **/
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23 #include "OdbcEnvironment.h"
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24
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25 #include <Logging.h>
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26 #include <OrthancException.h>
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27
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28 #include <boost/lexical_cast.hpp>
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29 #include <sqlext.h>
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32 namespace OrthancDatabases
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33 {
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34 OdbcEnvironment::OdbcEnvironment()
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35 {
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36 LOG(INFO) << "Creating the ODBC environment";
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37
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38 /* Allocate an environment handle */
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39 if (!SQL_SUCCEEDED(SQLAllocHandle(SQL_HANDLE_ENV, SQL_NULL_HANDLE, &handle_)))
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40 {
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41 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database,
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42 "Cannot create ODBC environment");
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43 }
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44
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45 /* We want ODBC 3 support */
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46 if (!SQL_SUCCEEDED(SQLSetEnvAttr(handle_, SQL_ATTR_ODBC_VERSION, (void *) SQL_OV_ODBC3, 0)))
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47 {
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48 SQLFreeHandle(SQL_HANDLE_ENV, handle_);
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49 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database,
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50 "Your environment doesn't support ODBC 3.x");
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51 }
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52 }
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55 OdbcEnvironment::~OdbcEnvironment()
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56 {
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57 LOG(INFO) << "Destructing the ODBC environment";
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58
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59 if (!SQL_SUCCEEDED(SQLFreeHandle(SQL_HANDLE_ENV, handle_)))
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60 {
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61 LOG(ERROR) << "Cannot tear down ODBC environment";
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62 }
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63 }
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66 std::string OdbcEnvironment::FormatError(SQLHANDLE handle,
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67 SQLSMALLINT type)
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68 {
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69 SQLINTEGER i = 0;
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70 SQLINTEGER native;
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71 SQLCHAR state[SQL_SQLSTATE_SIZE + 1];
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72 SQLCHAR text[256];
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73 SQLSMALLINT len;
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74
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75 std::string s;
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76
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77 for (;;)
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78 {
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79 SQLRETURN ret = SQLGetDiagRec(type, handle, ++i, state, &native, text, sizeof(text), &len);
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80 if (SQL_SUCCEEDED(ret))
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81 {
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82 if (i >= 2)
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83 {
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84 s += "\n";
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85 }
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86
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87 s += (std::string(reinterpret_cast<const char*>(state)) + " : " +
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88 boost::lexical_cast<std::string>(i) + "/" +
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89 boost::lexical_cast<std::string>(native) + " " +
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90 std::string(reinterpret_cast<const char*>(text)));
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91 }
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92 else
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93 {
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94 return s;
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95 }
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96 }
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97 }
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98
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99
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100 void OdbcEnvironment::GlobalInitialization()
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101 {
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102 /**
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103 * Explicitly inform the ODBC driver that the application is using
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104 * UTF-8, by making sure that default "C" locale is used. We are
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105 * in the scenario "ANSI application with a Unicode driver".
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106 * https://docs.microsoft.com/en-us/sql/connect/odbc/linux-mac/programming-guidelines
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107 * https://www.progress.com/tutorials/odbc/unicode
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108 **/
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109 setlocale(LC_ALL, "C");
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110 }
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111 }