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comparison 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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328:6a49c495c940 329:b5fb8b77ce4d
1 /**
2 * Orthanc - A Lightweight, RESTful DICOM Store
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 * Copyright (C) 2017-2021 Osimis S.A., Belgium
6 *
7 * This program is free software: you can redistribute it and/or
8 * modify it under the terms of the GNU Affero General Public License
9 * as published by the Free Software Foundation, either version 3 of
10 * the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Affero General Public License for more details.
16 *
17 * You should have received a copy of the GNU Affero General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
19 **/
20
21
22 #include "OdbcEnvironment.h"
23
24 #include <Logging.h>
25 #include <OrthancException.h>
26
27 #include <boost/lexical_cast.hpp>
28 #include <sqlext.h>
29
30
31 namespace OrthancDatabases
32 {
33 OdbcEnvironment::OdbcEnvironment()
34 {
35 LOG(INFO) << "Creating the ODBC environment";
36
37 /* Allocate an environment handle */
38 if (!SQL_SUCCEEDED(SQLAllocHandle(SQL_HANDLE_ENV, SQL_NULL_HANDLE, &handle_)))
39 {
40 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database,
41 "Cannot create ODBC environment");
42 }
43
44 /* We want ODBC 3 support */
45 if (!SQL_SUCCEEDED(SQLSetEnvAttr(handle_, SQL_ATTR_ODBC_VERSION, (void *) SQL_OV_ODBC3, 0)))
46 {
47 SQLFreeHandle(SQL_HANDLE_ENV, handle_);
48 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database,
49 "Your environment doesn't support ODBC 3.x");
50 }
51 }
52
53
54 OdbcEnvironment::~OdbcEnvironment()
55 {
56 LOG(INFO) << "Destructing the ODBC environment";
57
58 if (!SQL_SUCCEEDED(SQLFreeHandle(SQL_HANDLE_ENV, handle_)))
59 {
60 LOG(ERROR) << "Cannot tear down ODBC environment";
61 }
62 }
63
64
65 std::string OdbcEnvironment::FormatError(SQLHANDLE handle,
66 SQLSMALLINT type)
67 {
68 SQLINTEGER i = 0;
69 SQLINTEGER native;
70 SQLCHAR state[SQL_SQLSTATE_SIZE + 1];
71 SQLCHAR text[256];
72 SQLSMALLINT len;
73
74 std::string s;
75
76 for (;;)
77 {
78 SQLRETURN ret = SQLGetDiagRec(type, handle, ++i, state, &native, text, sizeof(text), &len);
79 if (SQL_SUCCEEDED(ret))
80 {
81 if (i >= 2)
82 {
83 s += "\n";
84 }
85
86 s += (std::string(reinterpret_cast<const char*>(state)) + " : " +
87 boost::lexical_cast<std::string>(i) + "/" +
88 boost::lexical_cast<std::string>(native) + " " +
89 std::string(reinterpret_cast<const char*>(text)));
90 }
91 else
92 {
93 return s;
94 }
95 }
96 }
97 }