Mercurial > hg > orthanc-databases
annotate Framework/PostgreSQL/PostgreSQLResult.cpp @ 46:6a574d810b98
Compatibility with MySQL 8.0
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 18 Jul 2018 12:27:40 +0200 |
| parents | 9774802fd05f |
| children | 318c1ccb787c |
| 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 | |
| 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
PostgreSQLStorageArea working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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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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6a574d810b98
Compatibility with MySQL 8.0
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
14
diff
changeset
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108 PostgreSQLResult::~PostgreSQLResult() |
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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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109 { |
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6a574d810b98
Compatibility with MySQL 8.0
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parents:
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diff
changeset
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110 try |
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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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111 { |
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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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112 Clear(); |
|
6a574d810b98
Compatibility with MySQL 8.0
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
14
diff
changeset
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113 } |
|
6a574d810b98
Compatibility with MySQL 8.0
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
14
diff
changeset
|
114 catch (Orthanc::OrthancException&) |
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6a574d810b98
Compatibility with MySQL 8.0
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
14
diff
changeset
|
115 { |
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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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116 // Ignore possible exceptions due to connection loss |
|
6a574d810b98
Compatibility with MySQL 8.0
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
14
diff
changeset
|
117 } |
|
6a574d810b98
Compatibility with MySQL 8.0
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
14
diff
changeset
|
118 } |
|
6a574d810b98
Compatibility with MySQL 8.0
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
14
diff
changeset
|
119 |
|
6a574d810b98
Compatibility with MySQL 8.0
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
14
diff
changeset
|
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 { | |
|
14
9774802fd05f
PostgreSQLStorageArea working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
0
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 } |