Mercurial > hg > orthanc-webviewer
comparison Orthanc/SQLite/StatementReference.cpp @ 0:02f7a0400a91
initial commit
author | Sebastien Jodogne <s.jodogne@gmail.com> |
---|---|
date | Wed, 25 Feb 2015 13:45:35 +0100 |
parents | |
children | 09421764214b |
comparison
equal
deleted
inserted
replaced
-1:000000000000 | 0:02f7a0400a91 |
---|---|
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 <glog/logging.h> | |
47 #endif | |
48 | |
49 #include <cassert> | |
50 #include "sqlite3.h" | |
51 | |
52 namespace Orthanc | |
53 { | |
54 namespace SQLite | |
55 { | |
56 bool StatementReference::IsRoot() const | |
57 { | |
58 return root_ == NULL; | |
59 } | |
60 | |
61 StatementReference::StatementReference() | |
62 { | |
63 root_ = NULL; | |
64 refCount_ = 0; | |
65 statement_ = NULL; | |
66 assert(IsRoot()); | |
67 } | |
68 | |
69 StatementReference::StatementReference(sqlite3* database, | |
70 const char* sql) | |
71 { | |
72 if (database == NULL || sql == NULL) | |
73 { | |
74 throw OrthancSQLiteException("Parameter out of range"); | |
75 } | |
76 | |
77 root_ = NULL; | |
78 refCount_ = 0; | |
79 | |
80 int error = sqlite3_prepare_v2(database, sql, -1, &statement_, NULL); | |
81 if (error != SQLITE_OK) | |
82 { | |
83 throw OrthancSQLiteException("SQLite: " + std::string(sqlite3_errmsg(database))); | |
84 } | |
85 | |
86 assert(IsRoot()); | |
87 } | |
88 | |
89 StatementReference::StatementReference(StatementReference& other) | |
90 { | |
91 refCount_ = 0; | |
92 | |
93 if (other.IsRoot()) | |
94 { | |
95 root_ = &other; | |
96 } | |
97 else | |
98 { | |
99 root_ = other.root_; | |
100 } | |
101 | |
102 root_->refCount_++; | |
103 statement_ = root_->statement_; | |
104 | |
105 assert(!IsRoot()); | |
106 } | |
107 | |
108 StatementReference::~StatementReference() | |
109 { | |
110 if (IsRoot()) | |
111 { | |
112 if (refCount_ != 0) | |
113 { | |
114 // There remain references to this object. We cannot throw | |
115 // an exception because: | |
116 // http://www.parashift.com/c++-faq/dtors-shouldnt-throw.html | |
117 | |
118 #if ORTHANC_SQLITE_STANDALONE != 1 | |
119 LOG(ERROR) << "Bad value of the reference counter"; | |
120 #endif | |
121 } | |
122 else if (statement_ != NULL) | |
123 { | |
124 sqlite3_finalize(statement_); | |
125 } | |
126 } | |
127 else | |
128 { | |
129 if (root_->refCount_ == 0) | |
130 { | |
131 // There remain references to this object. We cannot throw | |
132 // an exception because: | |
133 // http://www.parashift.com/c++-faq/dtors-shouldnt-throw.html | |
134 | |
135 #if ORTHANC_SQLITE_STANDALONE != 1 | |
136 LOG(ERROR) << "Bad value of the reference counter"; | |
137 #endif | |
138 } | |
139 else | |
140 { | |
141 root_->refCount_--; | |
142 } | |
143 } | |
144 } | |
145 | |
146 uint32_t StatementReference::GetReferenceCount() const | |
147 { | |
148 return refCount_; | |
149 } | |
150 } | |
151 } |