Mercurial > hg > orthanc-databases
annotate Framework/PostgreSQL/PostgreSQLTransaction.cpp @ 191:206f8c616b80 OrthancMySQL-3.0
set version
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 16 Dec 2020 16:23:36 +0100 |
parents | 275e14f57f1e |
children | 3236894320d6 |
rev | line source |
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0 | 1 /** |
2 * Orthanc - A Lightweight, RESTful DICOM Store | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium |
0 | 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 "PostgreSQLTransaction.h" | |
23 | |
24 #include "PostgreSQLStatement.h" | |
25 | |
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26 #include <Compatibility.h> // For std::unique_ptr<> |
152 | 27 #include <Logging.h> |
28 #include <OrthancException.h> | |
0 | 29 |
30 namespace OrthancDatabases | |
31 { | |
32 PostgreSQLTransaction::PostgreSQLTransaction(PostgreSQLDatabase& database) : | |
33 database_(database), | |
34 isOpen_(false), | |
35 readOnly_(true) | |
36 { | |
37 Begin(); | |
38 } | |
39 | |
40 | |
41 PostgreSQLTransaction::~PostgreSQLTransaction() | |
42 { | |
43 if (isOpen_) | |
44 { | |
45 LOG(WARNING) << "PostgreSQL: An active PostgreSQL transaction was dismissed"; | |
46 | |
47 try | |
48 { | |
49 database_.Execute("ABORT"); | |
50 } | |
51 catch (Orthanc::OrthancException&) | |
52 { | |
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53 // Ignore possible exceptions due to connection loss |
0 | 54 } |
55 } | |
56 } | |
57 | |
58 | |
59 void PostgreSQLTransaction::Begin() | |
60 { | |
61 if (isOpen_) | |
62 { | |
63 LOG(ERROR) << "PostgreSQL: Beginning a transaction twice!"; | |
64 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
65 } | |
66 | |
67 database_.Execute("BEGIN"); | |
68 database_.Execute("SET TRANSACTION ISOLATION LEVEL SERIALIZABLE"); | |
69 readOnly_ = true; | |
70 isOpen_ = true; | |
71 } | |
72 | |
73 | |
74 void PostgreSQLTransaction::Rollback() | |
75 { | |
76 if (!isOpen_) | |
77 { | |
78 LOG(ERROR) << "PostgreSQL: Attempting to rollback a nonexistent transaction. " | |
79 << "Did you remember to call Begin()?"; | |
80 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
81 } | |
82 | |
83 database_.Execute("ABORT"); | |
84 isOpen_ = false; | |
85 } | |
86 | |
87 | |
88 void PostgreSQLTransaction::Commit() | |
89 { | |
90 if (!isOpen_) | |
91 { | |
92 LOG(ERROR) << "PostgreSQL: Attempting to roll back a nonexistent transaction. " | |
93 << "Did you remember to call Begin()?"; | |
94 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
95 } | |
96 | |
97 database_.Execute("COMMIT"); | |
98 isOpen_ = false; | |
99 } | |
100 | |
101 | |
102 IResult* PostgreSQLTransaction::Execute(IPrecompiledStatement& statement, | |
103 const Dictionary& parameters) | |
104 { | |
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105 std::unique_ptr<IResult> result(dynamic_cast<PostgreSQLStatement&>(statement).Execute(*this, parameters)); |
0 | 106 |
107 if (!statement.IsReadOnly()) | |
108 { | |
109 readOnly_ = false; | |
110 } | |
111 | |
116 | 112 return result.release(); |
0 | 113 } |
114 | |
115 | |
116 void PostgreSQLTransaction::ExecuteWithoutResult(IPrecompiledStatement& statement, | |
117 const Dictionary& parameters) | |
118 { | |
119 dynamic_cast<PostgreSQLStatement&>(statement).ExecuteWithoutResult(*this, parameters); | |
120 | |
121 if (!statement.IsReadOnly()) | |
122 { | |
123 readOnly_ = false; | |
124 } | |
125 } | |
126 } |