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> |
|---|---|
| date | Sat, 12 Dec 2020 17:49:07 +0100 |
| parents | 275e14f57f1e |
| children | 02ad3ea95fca |
| 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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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 } |