Mercurial > hg > orthanc-databases
annotate Framework/PostgreSQL/PostgreSQLResult.cpp @ 176:0246923d4df9
trying to fix msvc builds with postgresql
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Sat, 12 Dec 2020 17:49:07 +0100 |
parents | 275e14f57f1e |
children | 02ad3ea95fca |
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 | |
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22 #include "PostgreSQLIncludes.h" // Must be the first |
105 | 23 #include "PostgreSQLResult.h" |
0 | 24 |
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25 // Get "ntohl()" defined |
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26 #if defined(_WIN32) |
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27 # include <winsock.h> |
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28 #else |
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29 # include <arpa/inet.h> |
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30 #endif |
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31 |
0 | 32 #include "../Common/BinaryStringValue.h" |
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33 #include "../Common/FileValue.h" |
0 | 34 #include "../Common/Integer64Value.h" |
35 #include "../Common/NullValue.h" | |
36 #include "../Common/Utf8StringValue.h" | |
37 | |
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38 #include <Compatibility.h> // For std::unique_ptr<> |
152 | 39 #include <OrthancException.h> |
40 #include <Logging.h> | |
41 #include <Endianness.h> | |
0 | 42 |
43 #include <cassert> | |
44 #include <boost/lexical_cast.hpp> | |
45 | |
46 | |
47 namespace OrthancDatabases | |
48 { | |
49 void PostgreSQLResult::Clear() | |
50 { | |
51 if (result_ != NULL) | |
52 { | |
53 PQclear(reinterpret_cast<PGresult*>(result_)); | |
54 result_ = NULL; | |
55 } | |
56 } | |
57 | |
58 | |
59 void PostgreSQLResult::CheckDone() | |
60 { | |
61 if (position_ >= PQntuples(reinterpret_cast<PGresult*>(result_))) | |
62 { | |
63 // We are at the end of the result set | |
64 Clear(); | |
65 } | |
66 } | |
67 | |
68 | |
69 void PostgreSQLResult::CheckColumn(unsigned int column, unsigned int /*Oid*/ expectedType) const | |
70 { | |
71 if (IsDone()) | |
72 { | |
73 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
74 } | |
75 | |
76 if (column >= static_cast<unsigned int>(PQnfields(reinterpret_cast<PGresult*>(result_)))) | |
77 { | |
78 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
79 } | |
80 | |
81 if (expectedType != 0 && | |
82 expectedType != PQftype(reinterpret_cast<PGresult*>(result_), column)) | |
83 { | |
84 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadParameterType); | |
85 } | |
86 } | |
87 | |
88 | |
89 PostgreSQLResult::PostgreSQLResult(PostgreSQLStatement& statement) : | |
90 position_(0), | |
91 database_(statement.GetDatabase()) | |
92 { | |
93 result_ = statement.Execute(); | |
94 assert(result_ != NULL); // An exception would have been thrown otherwise | |
95 | |
96 // This is the first call to "Next()" | |
97 if (PQresultStatus(reinterpret_cast<PGresult*>(result_)) == PGRES_TUPLES_OK) | |
98 { | |
99 CheckDone(); | |
100 columnsCount_ = static_cast<unsigned int>(PQnfields(reinterpret_cast<PGresult*>(result_))); | |
101 } | |
102 else | |
103 { | |
104 // This is not a SELECT request, we're done | |
105 Clear(); | |
106 columnsCount_ = 0; | |
107 } | |
108 } | |
109 | |
110 | |
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111 PostgreSQLResult::~PostgreSQLResult() |
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112 { |
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113 try |
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114 { |
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115 Clear(); |
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116 } |
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117 catch (Orthanc::OrthancException&) |
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118 { |
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119 // Ignore possible exceptions due to connection loss |
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120 } |
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121 } |
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122 |
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123 |
0 | 124 void PostgreSQLResult::Next() |
125 { | |
126 position_++; | |
127 CheckDone(); | |
128 } | |
129 | |
130 | |
131 bool PostgreSQLResult::IsNull(unsigned int column) const | |
132 { | |
133 CheckColumn(column, 0); | |
134 return PQgetisnull(reinterpret_cast<PGresult*>(result_), position_, column) != 0; | |
135 } | |
136 | |
137 | |
138 bool PostgreSQLResult::GetBoolean(unsigned int column) const | |
139 { | |
140 CheckColumn(column, BOOLOID); | |
141 assert(PQfsize(reinterpret_cast<PGresult*>(result_), column) == 1); | |
142 const uint8_t *v = reinterpret_cast<const uint8_t*> | |
143 (PQgetvalue(reinterpret_cast<PGresult*>(result_), position_, column)); | |
144 return (v[0] != 0); | |
145 } | |
146 | |
147 | |
148 int PostgreSQLResult::GetInteger(unsigned int column) const | |
149 { | |
150 CheckColumn(column, INT4OID); | |
151 assert(PQfsize(reinterpret_cast<PGresult*>(result_), column) == 4); | |
152 char *v = PQgetvalue(reinterpret_cast<PGresult*>(result_), position_, column); | |
153 return htobe32(*reinterpret_cast<int32_t*>(v)); | |
154 } | |
155 | |
156 | |
157 int64_t PostgreSQLResult::GetInteger64(unsigned int column) const | |
158 { | |
159 CheckColumn(column, INT8OID); | |
160 assert(PQfsize(reinterpret_cast<PGresult*>(result_), column) == 8); | |
161 char *v = PQgetvalue(reinterpret_cast<PGresult*>(result_), position_, column); | |
162 return htobe64(*reinterpret_cast<int64_t*>(v)); | |
163 } | |
164 | |
165 | |
166 std::string PostgreSQLResult::GetString(unsigned int column) const | |
167 { | |
168 CheckColumn(column, 0); | |
169 | |
170 Oid oid = PQftype(reinterpret_cast<PGresult*>(result_), column); | |
171 if (oid != TEXTOID && oid != VARCHAROID && oid != BYTEAOID) | |
172 { | |
173 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadParameterType); | |
174 } | |
175 | |
176 return std::string(PQgetvalue(reinterpret_cast<PGresult*>(result_), position_, column)); | |
177 } | |
178 | |
179 | |
180 void PostgreSQLResult::GetLargeObject(std::string& result, | |
181 unsigned int column) const | |
182 { | |
183 CheckColumn(column, OIDOID); | |
184 | |
185 Oid oid; | |
186 assert(PQfsize(reinterpret_cast<PGresult*>(result_), column) == sizeof(oid)); | |
187 | |
188 oid = *(const Oid*) PQgetvalue(reinterpret_cast<PGresult*>(result_), position_, column); | |
189 oid = ntohl(oid); | |
190 | |
191 PostgreSQLLargeObject::Read(result, database_, boost::lexical_cast<std::string>(oid)); | |
192 } | |
193 | |
194 | |
195 void PostgreSQLResult::GetLargeObject(void*& result, | |
196 size_t& size, | |
197 unsigned int column) const | |
198 { | |
199 CheckColumn(column, OIDOID); | |
200 | |
201 Oid oid; | |
202 assert(PQfsize(reinterpret_cast<PGresult*>(result_), column) == sizeof(oid)); | |
203 | |
204 oid = *(const Oid*) PQgetvalue(reinterpret_cast<PGresult*>(result_), position_, column); | |
205 oid = ntohl(oid); | |
206 | |
207 PostgreSQLLargeObject::Read(result, size, database_, boost::lexical_cast<std::string>(oid)); | |
208 } | |
209 | |
210 | |
211 IValue* PostgreSQLResult::GetValue(unsigned int column) const | |
212 { | |
213 if (IsNull(column)) | |
214 { | |
215 return new NullValue; | |
216 } | |
217 | |
218 Oid type = PQftype(reinterpret_cast<PGresult*>(result_), column); | |
219 | |
220 switch (type) | |
221 { | |
222 case BOOLOID: | |
223 // Convert Boolean values as integers | |
224 return new Integer64Value(GetBoolean(column) ? 1 : 0); | |
225 | |
226 case INT4OID: | |
227 return new Integer64Value(GetInteger(column)); | |
228 | |
229 case INT8OID: | |
230 return new Integer64Value(GetInteger64(column)); | |
231 | |
232 case TEXTOID: | |
233 case VARCHAROID: | |
234 return new Utf8StringValue(GetString(column)); | |
235 | |
236 case BYTEAOID: | |
237 return new BinaryStringValue(GetString(column)); | |
238 | |
239 case OIDOID: | |
240 { | |
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241 std::unique_ptr<FileValue> value(new FileValue); |
0 | 242 GetLargeObject(value->GetContent(), column); |
243 return value.release(); | |
244 } | |
245 | |
246 default: | |
247 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
248 } | |
249 } | |
250 } |