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annotate Framework/Odbc/OdbcEnvironment.cpp @ 329:b5fb8b77ce4d

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initial commit of ODBC framework
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 10 Aug 2021 20:08:53 +0200
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children 674bbb9d1c83
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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) 2017-2021 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #include "OdbcEnvironment.h"
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23
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24 #include <Logging.h>
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25 #include <OrthancException.h>
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26
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27 #include <boost/lexical_cast.hpp>
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28 #include <sqlext.h>
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31 namespace OrthancDatabases
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32 {
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33 OdbcEnvironment::OdbcEnvironment()
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34 {
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35 LOG(INFO) << "Creating the ODBC environment";
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36
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37 /* Allocate an environment handle */
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38 if (!SQL_SUCCEEDED(SQLAllocHandle(SQL_HANDLE_ENV, SQL_NULL_HANDLE, &handle_)))
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39 {
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40 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database,
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41 "Cannot create ODBC environment");
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42 }
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43
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44 /* We want ODBC 3 support */
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45 if (!SQL_SUCCEEDED(SQLSetEnvAttr(handle_, SQL_ATTR_ODBC_VERSION, (void *) SQL_OV_ODBC3, 0)))
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46 {
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47 SQLFreeHandle(SQL_HANDLE_ENV, handle_);
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48 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database,
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49 "Your environment doesn't support ODBC 3.x");
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50 }
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51 }
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54 OdbcEnvironment::~OdbcEnvironment()
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55 {
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56 LOG(INFO) << "Destructing the ODBC environment";
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57
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58 if (!SQL_SUCCEEDED(SQLFreeHandle(SQL_HANDLE_ENV, handle_)))
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59 {
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60 LOG(ERROR) << "Cannot tear down ODBC environment";
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61 }
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62 }
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64
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65 std::string OdbcEnvironment::FormatError(SQLHANDLE handle,
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66 SQLSMALLINT type)
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67 {
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68 SQLINTEGER i = 0;
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69 SQLINTEGER native;
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70 SQLCHAR state[SQL_SQLSTATE_SIZE + 1];
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71 SQLCHAR text[256];
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72 SQLSMALLINT len;
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73
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74 std::string s;
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75
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76 for (;;)
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77 {
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78 SQLRETURN ret = SQLGetDiagRec(type, handle, ++i, state, &native, text, sizeof(text), &len);
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79 if (SQL_SUCCEEDED(ret))
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80 {
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81 if (i >= 2)
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82 {
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83 s += "\n";
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84 }
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85
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86 s += (std::string(reinterpret_cast<const char*>(state)) + " : " +
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87 boost::lexical_cast<std::string>(i) + "/" +
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88 boost::lexical_cast<std::string>(native) + " " +
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89 std::string(reinterpret_cast<const char*>(text)));
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90 }
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91 else
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92 {
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93 return s;
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94 }
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95 }
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96 }
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97 }