Mercurial > hg > orthanc-webviewer
comparison Orthanc/Core/SQLite/StatementReference.cpp @ 78:d6da56f86e5a
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 25 Sep 2015 11:29:17 +0200 |
parents | |
children | 3809121c3290 |
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77:f44ebb25691c | 78:d6da56f86e5a |
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1 /** | |
2 * Orthanc - A Lightweight, RESTful DICOM Store | |
3 * | |
4 * Copyright (C) 2012-2015 Sebastien Jodogne <s.jodogne@gmail.com>, | |
5 * Medical Physics Department, CHU of Liege, Belgium | |
6 * | |
7 * Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
8 * | |
9 * Redistribution and use in source and binary forms, with or without | |
10 * modification, are permitted provided that the following conditions are | |
11 * met: | |
12 * | |
13 * * Redistributions of source code must retain the above copyright | |
14 * notice, this list of conditions and the following disclaimer. | |
15 * * Redistributions in binary form must reproduce the above | |
16 * copyright notice, this list of conditions and the following disclaimer | |
17 * in the documentation and/or other materials provided with the | |
18 * distribution. | |
19 * * Neither the name of Google Inc., the name of the CHU of Liege, | |
20 * nor the names of its contributors may be used to endorse or promote | |
21 * products derived from this software without specific prior written | |
22 * permission. | |
23 * | |
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
25 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
26 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
27 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
28 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
29 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
34 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
35 **/ | |
36 | |
37 | |
38 #if ORTHANC_SQLITE_STANDALONE != 1 | |
39 #include "../PrecompiledHeaders.h" | |
40 #endif | |
41 | |
42 #include "StatementReference.h" | |
43 #include "OrthancSQLiteException.h" | |
44 | |
45 #if ORTHANC_SQLITE_STANDALONE != 1 | |
46 #include "../Logging.h" | |
47 #endif | |
48 | |
49 #include <string> | |
50 #include <cassert> | |
51 #include "sqlite3.h" | |
52 | |
53 namespace Orthanc | |
54 { | |
55 namespace SQLite | |
56 { | |
57 bool StatementReference::IsRoot() const | |
58 { | |
59 return root_ == NULL; | |
60 } | |
61 | |
62 StatementReference::StatementReference() | |
63 { | |
64 root_ = NULL; | |
65 refCount_ = 0; | |
66 statement_ = NULL; | |
67 assert(IsRoot()); | |
68 } | |
69 | |
70 StatementReference::StatementReference(sqlite3* database, | |
71 const char* sql) | |
72 { | |
73 if (database == NULL || sql == NULL) | |
74 { | |
75 throw OrthancSQLiteException(ErrorCode_ParameterOutOfRange); | |
76 } | |
77 | |
78 root_ = NULL; | |
79 refCount_ = 0; | |
80 | |
81 int error = sqlite3_prepare_v2(database, sql, -1, &statement_, NULL); | |
82 if (error != SQLITE_OK) | |
83 { | |
84 #if ORTHANC_SQLITE_STANDALONE != 1 | |
85 LOG(ERROR) << "SQLite: " << sqlite3_errmsg(database); | |
86 #endif | |
87 | |
88 throw OrthancSQLiteException(ErrorCode_SQLitePrepareStatement); | |
89 } | |
90 | |
91 assert(IsRoot()); | |
92 } | |
93 | |
94 StatementReference::StatementReference(StatementReference& other) | |
95 { | |
96 refCount_ = 0; | |
97 | |
98 if (other.IsRoot()) | |
99 { | |
100 root_ = &other; | |
101 } | |
102 else | |
103 { | |
104 root_ = other.root_; | |
105 } | |
106 | |
107 root_->refCount_++; | |
108 statement_ = root_->statement_; | |
109 | |
110 assert(!IsRoot()); | |
111 } | |
112 | |
113 StatementReference::~StatementReference() | |
114 { | |
115 if (IsRoot()) | |
116 { | |
117 if (refCount_ != 0) | |
118 { | |
119 // There remain references to this object. We cannot throw | |
120 // an exception because: | |
121 // http://www.parashift.com/c++-faq/dtors-shouldnt-throw.html | |
122 | |
123 #if ORTHANC_SQLITE_STANDALONE != 1 | |
124 LOG(ERROR) << "Bad value of the reference counter"; | |
125 #endif | |
126 } | |
127 else if (statement_ != NULL) | |
128 { | |
129 sqlite3_finalize(statement_); | |
130 } | |
131 } | |
132 else | |
133 { | |
134 if (root_->refCount_ == 0) | |
135 { | |
136 // There remain references to this object. We cannot throw | |
137 // an exception because: | |
138 // http://www.parashift.com/c++-faq/dtors-shouldnt-throw.html | |
139 | |
140 #if ORTHANC_SQLITE_STANDALONE != 1 | |
141 LOG(ERROR) << "Bad value of the reference counter"; | |
142 #endif | |
143 } | |
144 else | |
145 { | |
146 root_->refCount_--; | |
147 } | |
148 } | |
149 } | |
150 | |
151 uint32_t StatementReference::GetReferenceCount() const | |
152 { | |
153 return refCount_; | |
154 } | |
155 } | |
156 } |