Mercurial > hg > orthanc-databases
annotate Framework/PostgreSQL/PostgreSQLTransaction.cpp @ 152:063aa53b5917
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 01 Jul 2020 08:54:32 +0200 |
| parents | 4cd7e45b671e |
| children | 275e14f57f1e |
| rev | line source |
|---|---|
| 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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Sebastien Jodogne <s.jodogne@gmail.com>
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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 | |
| 152 | 26 #include <Logging.h> |
| 27 #include <OrthancException.h> | |
| 0 | 28 |
| 29 namespace OrthancDatabases | |
| 30 { | |
| 31 PostgreSQLTransaction::PostgreSQLTransaction(PostgreSQLDatabase& database) : | |
| 32 database_(database), | |
| 33 isOpen_(false), | |
| 34 readOnly_(true) | |
| 35 { | |
| 36 Begin(); | |
| 37 } | |
| 38 | |
| 39 | |
| 40 PostgreSQLTransaction::~PostgreSQLTransaction() | |
| 41 { | |
| 42 if (isOpen_) | |
| 43 { | |
| 44 LOG(WARNING) << "PostgreSQL: An active PostgreSQL transaction was dismissed"; | |
| 45 | |
| 46 try | |
| 47 { | |
| 48 database_.Execute("ABORT"); | |
| 49 } | |
| 50 catch (Orthanc::OrthancException&) | |
| 51 { | |
|
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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52 // Ignore possible exceptions due to connection loss |
| 0 | 53 } |
| 54 } | |
| 55 } | |
| 56 | |
| 57 | |
| 58 void PostgreSQLTransaction::Begin() | |
| 59 { | |
| 60 if (isOpen_) | |
| 61 { | |
| 62 LOG(ERROR) << "PostgreSQL: Beginning a transaction twice!"; | |
| 63 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
| 64 } | |
| 65 | |
| 66 database_.Execute("BEGIN"); | |
| 67 database_.Execute("SET TRANSACTION ISOLATION LEVEL SERIALIZABLE"); | |
| 68 readOnly_ = true; | |
| 69 isOpen_ = true; | |
| 70 } | |
| 71 | |
| 72 | |
| 73 void PostgreSQLTransaction::Rollback() | |
| 74 { | |
| 75 if (!isOpen_) | |
| 76 { | |
| 77 LOG(ERROR) << "PostgreSQL: Attempting to rollback a nonexistent transaction. " | |
| 78 << "Did you remember to call Begin()?"; | |
| 79 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
| 80 } | |
| 81 | |
| 82 database_.Execute("ABORT"); | |
| 83 isOpen_ = false; | |
| 84 } | |
| 85 | |
| 86 | |
| 87 void PostgreSQLTransaction::Commit() | |
| 88 { | |
| 89 if (!isOpen_) | |
| 90 { | |
| 91 LOG(ERROR) << "PostgreSQL: Attempting to roll back a nonexistent transaction. " | |
| 92 << "Did you remember to call Begin()?"; | |
| 93 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
| 94 } | |
| 95 | |
| 96 database_.Execute("COMMIT"); | |
| 97 isOpen_ = false; | |
| 98 } | |
| 99 | |
| 100 | |
| 101 IResult* PostgreSQLTransaction::Execute(IPrecompiledStatement& statement, | |
| 102 const Dictionary& parameters) | |
| 103 { | |
| 104 std::auto_ptr<IResult> result(dynamic_cast<PostgreSQLStatement&>(statement).Execute(*this, parameters)); | |
| 105 | |
| 106 if (!statement.IsReadOnly()) | |
| 107 { | |
| 108 readOnly_ = false; | |
| 109 } | |
| 110 | |
| 116 | 111 return result.release(); |
| 0 | 112 } |
| 113 | |
| 114 | |
| 115 void PostgreSQLTransaction::ExecuteWithoutResult(IPrecompiledStatement& statement, | |
| 116 const Dictionary& parameters) | |
| 117 { | |
| 118 dynamic_cast<PostgreSQLStatement&>(statement).ExecuteWithoutResult(*this, parameters); | |
| 119 | |
| 120 if (!statement.IsReadOnly()) | |
| 121 { | |
| 122 readOnly_ = false; | |
| 123 } | |
| 124 } | |
| 125 } |