Mercurial > hg > orthanc-databases
annotate Framework/PostgreSQL/PostgreSQLResult.cpp @ 67:714c5d2bee76
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Mon, 24 Dec 2018 13:35:26 +0100 |
| parents | 318c1ccb787c |
| children | 9263b3de37ed |
| 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 | |
| 67 | 5 * Copyright (C) 2017-2019 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 | |
| 22 #include "PostgreSQLResult.h" | |
| 23 | |
| 24 #include "../Common/BinaryStringValue.h" | |
|
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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 | |
| 59 | 30 #include <pg_config.h> |
| 31 | |
| 32 #if PG_VERSION_NUM >= 110000 | |
| 33 # include <postgres.h> | |
| 34 # undef LOG // This one comes from <postgres.h>, and conflicts with <Core/Logging.h> | |
| 35 #endif | |
| 36 | |
| 0 | 37 #include <Core/OrthancException.h> |
| 38 #include <Core/Logging.h> | |
| 39 | |
| 40 #include <cassert> | |
| 41 #include <boost/lexical_cast.hpp> | |
| 42 | |
| 43 // PostgreSQL includes | |
| 44 #include <libpq-fe.h> | |
| 45 #include <c.h> | |
| 46 #include <catalog/pg_type.h> | |
| 47 | |
| 48 #include <Core/Endianness.h> | |
| 49 | |
| 50 | |
| 51 namespace OrthancDatabases | |
| 52 { | |
| 53 void PostgreSQLResult::Clear() | |
| 54 { | |
| 55 if (result_ != NULL) | |
| 56 { | |
| 57 PQclear(reinterpret_cast<PGresult*>(result_)); | |
| 58 result_ = NULL; | |
| 59 } | |
| 60 } | |
| 61 | |
| 62 | |
| 63 void PostgreSQLResult::CheckDone() | |
| 64 { | |
| 65 if (position_ >= PQntuples(reinterpret_cast<PGresult*>(result_))) | |
| 66 { | |
| 67 // We are at the end of the result set | |
| 68 Clear(); | |
| 69 } | |
| 70 } | |
| 71 | |
| 72 | |
| 73 void PostgreSQLResult::CheckColumn(unsigned int column, unsigned int /*Oid*/ expectedType) const | |
| 74 { | |
| 75 if (IsDone()) | |
| 76 { | |
| 77 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
| 78 } | |
| 79 | |
| 80 if (column >= static_cast<unsigned int>(PQnfields(reinterpret_cast<PGresult*>(result_)))) | |
| 81 { | |
| 82 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 83 } | |
| 84 | |
| 85 if (expectedType != 0 && | |
| 86 expectedType != PQftype(reinterpret_cast<PGresult*>(result_), column)) | |
| 87 { | |
| 88 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadParameterType); | |
| 89 } | |
| 90 } | |
| 91 | |
| 92 | |
| 93 PostgreSQLResult::PostgreSQLResult(PostgreSQLStatement& statement) : | |
| 94 position_(0), | |
| 95 database_(statement.GetDatabase()) | |
| 96 { | |
| 97 result_ = statement.Execute(); | |
| 98 assert(result_ != NULL); // An exception would have been thrown otherwise | |
| 99 | |
| 100 // This is the first call to "Next()" | |
| 101 if (PQresultStatus(reinterpret_cast<PGresult*>(result_)) == PGRES_TUPLES_OK) | |
| 102 { | |
| 103 CheckDone(); | |
| 104 columnsCount_ = static_cast<unsigned int>(PQnfields(reinterpret_cast<PGresult*>(result_))); | |
| 105 } | |
| 106 else | |
| 107 { | |
| 108 // This is not a SELECT request, we're done | |
| 109 Clear(); | |
| 110 columnsCount_ = 0; | |
| 111 } | |
| 112 } | |
| 113 | |
| 114 | |
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115 PostgreSQLResult::~PostgreSQLResult() |
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116 { |
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117 try |
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118 { |
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119 Clear(); |
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Compatibility with MySQL 8.0
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parents:
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120 } |
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parents:
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121 catch (Orthanc::OrthancException&) |
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6a574d810b98
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parents:
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122 { |
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parents:
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123 // Ignore possible exceptions due to connection loss |
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6a574d810b98
Compatibility with MySQL 8.0
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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diff
changeset
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124 } |
|
6a574d810b98
Compatibility with MySQL 8.0
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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diff
changeset
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125 } |
|
6a574d810b98
Compatibility with MySQL 8.0
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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diff
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126 |
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Compatibility with MySQL 8.0
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parents:
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diff
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127 |
| 0 | 128 void PostgreSQLResult::Next() |
| 129 { | |
| 130 position_++; | |
| 131 CheckDone(); | |
| 132 } | |
| 133 | |
| 134 | |
| 135 bool PostgreSQLResult::IsNull(unsigned int column) const | |
| 136 { | |
| 137 CheckColumn(column, 0); | |
| 138 return PQgetisnull(reinterpret_cast<PGresult*>(result_), position_, column) != 0; | |
| 139 } | |
| 140 | |
| 141 | |
| 142 bool PostgreSQLResult::GetBoolean(unsigned int column) const | |
| 143 { | |
| 144 CheckColumn(column, BOOLOID); | |
| 145 assert(PQfsize(reinterpret_cast<PGresult*>(result_), column) == 1); | |
| 146 const uint8_t *v = reinterpret_cast<const uint8_t*> | |
| 147 (PQgetvalue(reinterpret_cast<PGresult*>(result_), position_, column)); | |
| 148 return (v[0] != 0); | |
| 149 } | |
| 150 | |
| 151 | |
| 152 int PostgreSQLResult::GetInteger(unsigned int column) const | |
| 153 { | |
| 154 CheckColumn(column, INT4OID); | |
| 155 assert(PQfsize(reinterpret_cast<PGresult*>(result_), column) == 4); | |
| 156 char *v = PQgetvalue(reinterpret_cast<PGresult*>(result_), position_, column); | |
| 157 return htobe32(*reinterpret_cast<int32_t*>(v)); | |
| 158 } | |
| 159 | |
| 160 | |
| 161 int64_t PostgreSQLResult::GetInteger64(unsigned int column) const | |
| 162 { | |
| 163 CheckColumn(column, INT8OID); | |
| 164 assert(PQfsize(reinterpret_cast<PGresult*>(result_), column) == 8); | |
| 165 char *v = PQgetvalue(reinterpret_cast<PGresult*>(result_), position_, column); | |
| 166 return htobe64(*reinterpret_cast<int64_t*>(v)); | |
| 167 } | |
| 168 | |
| 169 | |
| 170 std::string PostgreSQLResult::GetString(unsigned int column) const | |
| 171 { | |
| 172 CheckColumn(column, 0); | |
| 173 | |
| 174 Oid oid = PQftype(reinterpret_cast<PGresult*>(result_), column); | |
| 175 if (oid != TEXTOID && oid != VARCHAROID && oid != BYTEAOID) | |
| 176 { | |
| 177 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadParameterType); | |
| 178 } | |
| 179 | |
| 180 return std::string(PQgetvalue(reinterpret_cast<PGresult*>(result_), position_, column)); | |
| 181 } | |
| 182 | |
| 183 | |
| 184 void PostgreSQLResult::GetLargeObject(std::string& result, | |
| 185 unsigned int column) const | |
| 186 { | |
| 187 CheckColumn(column, OIDOID); | |
| 188 | |
| 189 Oid oid; | |
| 190 assert(PQfsize(reinterpret_cast<PGresult*>(result_), column) == sizeof(oid)); | |
| 191 | |
| 192 oid = *(const Oid*) PQgetvalue(reinterpret_cast<PGresult*>(result_), position_, column); | |
| 193 oid = ntohl(oid); | |
| 194 | |
| 195 PostgreSQLLargeObject::Read(result, database_, boost::lexical_cast<std::string>(oid)); | |
| 196 } | |
| 197 | |
| 198 | |
| 199 void PostgreSQLResult::GetLargeObject(void*& result, | |
| 200 size_t& size, | |
| 201 unsigned int column) const | |
| 202 { | |
| 203 CheckColumn(column, OIDOID); | |
| 204 | |
| 205 Oid oid; | |
| 206 assert(PQfsize(reinterpret_cast<PGresult*>(result_), column) == sizeof(oid)); | |
| 207 | |
| 208 oid = *(const Oid*) PQgetvalue(reinterpret_cast<PGresult*>(result_), position_, column); | |
| 209 oid = ntohl(oid); | |
| 210 | |
| 211 PostgreSQLLargeObject::Read(result, size, database_, boost::lexical_cast<std::string>(oid)); | |
| 212 } | |
| 213 | |
| 214 | |
| 215 IValue* PostgreSQLResult::GetValue(unsigned int column) const | |
| 216 { | |
| 217 if (IsNull(column)) | |
| 218 { | |
| 219 return new NullValue; | |
| 220 } | |
| 221 | |
| 222 Oid type = PQftype(reinterpret_cast<PGresult*>(result_), column); | |
| 223 | |
| 224 switch (type) | |
| 225 { | |
| 226 case BOOLOID: | |
| 227 // Convert Boolean values as integers | |
| 228 return new Integer64Value(GetBoolean(column) ? 1 : 0); | |
| 229 | |
| 230 case INT4OID: | |
| 231 return new Integer64Value(GetInteger(column)); | |
| 232 | |
| 233 case INT8OID: | |
| 234 return new Integer64Value(GetInteger64(column)); | |
| 235 | |
| 236 case TEXTOID: | |
| 237 case VARCHAROID: | |
| 238 return new Utf8StringValue(GetString(column)); | |
| 239 | |
| 240 case BYTEAOID: | |
| 241 return new BinaryStringValue(GetString(column)); | |
| 242 | |
| 243 case OIDOID: | |
| 244 { | |
|
14
9774802fd05f
PostgreSQLStorageArea working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
0
diff
changeset
|
245 std::auto_ptr<FileValue> value(new FileValue); |
| 0 | 246 GetLargeObject(value->GetContent(), column); |
| 247 return value.release(); | |
| 248 } | |
| 249 | |
| 250 default: | |
| 251 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 252 } | |
| 253 } | |
| 254 } |