Mercurial > hg > orthanc-databases
annotate Framework/PostgreSQL/PostgreSQLResult.cpp @ 56:4f66bc893fc3
Fix Debian issue #906771
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Mon, 03 Sep 2018 16:23:20 +0200 |
parents | 6a574d810b98 |
children | 318c1ccb787c |
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 | |
5 * Copyright (C) 2017-2018 Osimis S.A., Belgium | |
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 "PostgreSQLResult.h" | |
23 | |
24 #include "../Common/BinaryStringValue.h" | |
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9774802fd05f
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25 #include "../Common/FileValue.h" |
0 | 26 #include "../Common/Integer64Value.h" |
27 #include "../Common/NullValue.h" | |
28 #include "../Common/Utf8StringValue.h" | |
29 | |
30 #include <Core/OrthancException.h> | |
31 #include <Core/Logging.h> | |
32 | |
33 #include <cassert> | |
34 #include <boost/lexical_cast.hpp> | |
35 | |
36 // PostgreSQL includes | |
37 #include <libpq-fe.h> | |
38 #include <c.h> | |
39 #include <catalog/pg_type.h> | |
40 | |
41 #include <Core/Endianness.h> | |
42 | |
43 | |
44 namespace OrthancDatabases | |
45 { | |
46 void PostgreSQLResult::Clear() | |
47 { | |
48 if (result_ != NULL) | |
49 { | |
50 PQclear(reinterpret_cast<PGresult*>(result_)); | |
51 result_ = NULL; | |
52 } | |
53 } | |
54 | |
55 | |
56 void PostgreSQLResult::CheckDone() | |
57 { | |
58 if (position_ >= PQntuples(reinterpret_cast<PGresult*>(result_))) | |
59 { | |
60 // We are at the end of the result set | |
61 Clear(); | |
62 } | |
63 } | |
64 | |
65 | |
66 void PostgreSQLResult::CheckColumn(unsigned int column, unsigned int /*Oid*/ expectedType) const | |
67 { | |
68 if (IsDone()) | |
69 { | |
70 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
71 } | |
72 | |
73 if (column >= static_cast<unsigned int>(PQnfields(reinterpret_cast<PGresult*>(result_)))) | |
74 { | |
75 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
76 } | |
77 | |
78 if (expectedType != 0 && | |
79 expectedType != PQftype(reinterpret_cast<PGresult*>(result_), column)) | |
80 { | |
81 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadParameterType); | |
82 } | |
83 } | |
84 | |
85 | |
86 PostgreSQLResult::PostgreSQLResult(PostgreSQLStatement& statement) : | |
87 position_(0), | |
88 database_(statement.GetDatabase()) | |
89 { | |
90 result_ = statement.Execute(); | |
91 assert(result_ != NULL); // An exception would have been thrown otherwise | |
92 | |
93 // This is the first call to "Next()" | |
94 if (PQresultStatus(reinterpret_cast<PGresult*>(result_)) == PGRES_TUPLES_OK) | |
95 { | |
96 CheckDone(); | |
97 columnsCount_ = static_cast<unsigned int>(PQnfields(reinterpret_cast<PGresult*>(result_))); | |
98 } | |
99 else | |
100 { | |
101 // This is not a SELECT request, we're done | |
102 Clear(); | |
103 columnsCount_ = 0; | |
104 } | |
105 } | |
106 | |
107 | |
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108 PostgreSQLResult::~PostgreSQLResult() |
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109 { |
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110 try |
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111 { |
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112 Clear(); |
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113 } |
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114 catch (Orthanc::OrthancException&) |
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115 { |
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116 // Ignore possible exceptions due to connection loss |
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117 } |
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118 } |
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119 |
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120 |
0 | 121 void PostgreSQLResult::Next() |
122 { | |
123 position_++; | |
124 CheckDone(); | |
125 } | |
126 | |
127 | |
128 bool PostgreSQLResult::IsNull(unsigned int column) const | |
129 { | |
130 CheckColumn(column, 0); | |
131 return PQgetisnull(reinterpret_cast<PGresult*>(result_), position_, column) != 0; | |
132 } | |
133 | |
134 | |
135 bool PostgreSQLResult::GetBoolean(unsigned int column) const | |
136 { | |
137 CheckColumn(column, BOOLOID); | |
138 assert(PQfsize(reinterpret_cast<PGresult*>(result_), column) == 1); | |
139 const uint8_t *v = reinterpret_cast<const uint8_t*> | |
140 (PQgetvalue(reinterpret_cast<PGresult*>(result_), position_, column)); | |
141 return (v[0] != 0); | |
142 } | |
143 | |
144 | |
145 int PostgreSQLResult::GetInteger(unsigned int column) const | |
146 { | |
147 CheckColumn(column, INT4OID); | |
148 assert(PQfsize(reinterpret_cast<PGresult*>(result_), column) == 4); | |
149 char *v = PQgetvalue(reinterpret_cast<PGresult*>(result_), position_, column); | |
150 return htobe32(*reinterpret_cast<int32_t*>(v)); | |
151 } | |
152 | |
153 | |
154 int64_t PostgreSQLResult::GetInteger64(unsigned int column) const | |
155 { | |
156 CheckColumn(column, INT8OID); | |
157 assert(PQfsize(reinterpret_cast<PGresult*>(result_), column) == 8); | |
158 char *v = PQgetvalue(reinterpret_cast<PGresult*>(result_), position_, column); | |
159 return htobe64(*reinterpret_cast<int64_t*>(v)); | |
160 } | |
161 | |
162 | |
163 std::string PostgreSQLResult::GetString(unsigned int column) const | |
164 { | |
165 CheckColumn(column, 0); | |
166 | |
167 Oid oid = PQftype(reinterpret_cast<PGresult*>(result_), column); | |
168 if (oid != TEXTOID && oid != VARCHAROID && oid != BYTEAOID) | |
169 { | |
170 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadParameterType); | |
171 } | |
172 | |
173 return std::string(PQgetvalue(reinterpret_cast<PGresult*>(result_), position_, column)); | |
174 } | |
175 | |
176 | |
177 void PostgreSQLResult::GetLargeObject(std::string& result, | |
178 unsigned int column) const | |
179 { | |
180 CheckColumn(column, OIDOID); | |
181 | |
182 Oid oid; | |
183 assert(PQfsize(reinterpret_cast<PGresult*>(result_), column) == sizeof(oid)); | |
184 | |
185 oid = *(const Oid*) PQgetvalue(reinterpret_cast<PGresult*>(result_), position_, column); | |
186 oid = ntohl(oid); | |
187 | |
188 PostgreSQLLargeObject::Read(result, database_, boost::lexical_cast<std::string>(oid)); | |
189 } | |
190 | |
191 | |
192 void PostgreSQLResult::GetLargeObject(void*& result, | |
193 size_t& size, | |
194 unsigned int column) const | |
195 { | |
196 CheckColumn(column, OIDOID); | |
197 | |
198 Oid oid; | |
199 assert(PQfsize(reinterpret_cast<PGresult*>(result_), column) == sizeof(oid)); | |
200 | |
201 oid = *(const Oid*) PQgetvalue(reinterpret_cast<PGresult*>(result_), position_, column); | |
202 oid = ntohl(oid); | |
203 | |
204 PostgreSQLLargeObject::Read(result, size, database_, boost::lexical_cast<std::string>(oid)); | |
205 } | |
206 | |
207 | |
208 IValue* PostgreSQLResult::GetValue(unsigned int column) const | |
209 { | |
210 if (IsNull(column)) | |
211 { | |
212 return new NullValue; | |
213 } | |
214 | |
215 Oid type = PQftype(reinterpret_cast<PGresult*>(result_), column); | |
216 | |
217 switch (type) | |
218 { | |
219 case BOOLOID: | |
220 // Convert Boolean values as integers | |
221 return new Integer64Value(GetBoolean(column) ? 1 : 0); | |
222 | |
223 case INT4OID: | |
224 return new Integer64Value(GetInteger(column)); | |
225 | |
226 case INT8OID: | |
227 return new Integer64Value(GetInteger64(column)); | |
228 | |
229 case TEXTOID: | |
230 case VARCHAROID: | |
231 return new Utf8StringValue(GetString(column)); | |
232 | |
233 case BYTEAOID: | |
234 return new BinaryStringValue(GetString(column)); | |
235 | |
236 case OIDOID: | |
237 { | |
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9774802fd05f
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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diff
changeset
|
238 std::auto_ptr<FileValue> value(new FileValue); |
0 | 239 GetLargeObject(value->GetContent(), column); |
240 return value.release(); | |
241 } | |
242 | |
243 default: | |
244 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
245 } | |
246 } | |
247 } |