Mercurial > hg > orthanc-databases
annotate Framework/PostgreSQL/PostgreSQLResult.cpp @ 14:9774802fd05f
PostgreSQLStorageArea working
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Mon, 09 Jul 2018 20:28:27 +0200 |
| parents | 7cea966b6829 |
| children | 6a574d810b98 |
| 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" | |
|
14
9774802fd05f
PostgreSQLStorageArea working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
0
diff
changeset
|
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 | |
| 108 void PostgreSQLResult::Next() | |
| 109 { | |
| 110 position_++; | |
| 111 CheckDone(); | |
| 112 } | |
| 113 | |
| 114 | |
| 115 bool PostgreSQLResult::IsNull(unsigned int column) const | |
| 116 { | |
| 117 CheckColumn(column, 0); | |
| 118 return PQgetisnull(reinterpret_cast<PGresult*>(result_), position_, column) != 0; | |
| 119 } | |
| 120 | |
| 121 | |
| 122 bool PostgreSQLResult::GetBoolean(unsigned int column) const | |
| 123 { | |
| 124 CheckColumn(column, BOOLOID); | |
| 125 assert(PQfsize(reinterpret_cast<PGresult*>(result_), column) == 1); | |
| 126 const uint8_t *v = reinterpret_cast<const uint8_t*> | |
| 127 (PQgetvalue(reinterpret_cast<PGresult*>(result_), position_, column)); | |
| 128 return (v[0] != 0); | |
| 129 } | |
| 130 | |
| 131 | |
| 132 int PostgreSQLResult::GetInteger(unsigned int column) const | |
| 133 { | |
| 134 CheckColumn(column, INT4OID); | |
| 135 assert(PQfsize(reinterpret_cast<PGresult*>(result_), column) == 4); | |
| 136 char *v = PQgetvalue(reinterpret_cast<PGresult*>(result_), position_, column); | |
| 137 return htobe32(*reinterpret_cast<int32_t*>(v)); | |
| 138 } | |
| 139 | |
| 140 | |
| 141 int64_t PostgreSQLResult::GetInteger64(unsigned int column) const | |
| 142 { | |
| 143 CheckColumn(column, INT8OID); | |
| 144 assert(PQfsize(reinterpret_cast<PGresult*>(result_), column) == 8); | |
| 145 char *v = PQgetvalue(reinterpret_cast<PGresult*>(result_), position_, column); | |
| 146 return htobe64(*reinterpret_cast<int64_t*>(v)); | |
| 147 } | |
| 148 | |
| 149 | |
| 150 std::string PostgreSQLResult::GetString(unsigned int column) const | |
| 151 { | |
| 152 CheckColumn(column, 0); | |
| 153 | |
| 154 Oid oid = PQftype(reinterpret_cast<PGresult*>(result_), column); | |
| 155 if (oid != TEXTOID && oid != VARCHAROID && oid != BYTEAOID) | |
| 156 { | |
| 157 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadParameterType); | |
| 158 } | |
| 159 | |
| 160 return std::string(PQgetvalue(reinterpret_cast<PGresult*>(result_), position_, column)); | |
| 161 } | |
| 162 | |
| 163 | |
| 164 void PostgreSQLResult::GetLargeObject(std::string& result, | |
| 165 unsigned int column) const | |
| 166 { | |
| 167 CheckColumn(column, OIDOID); | |
| 168 | |
| 169 Oid oid; | |
| 170 assert(PQfsize(reinterpret_cast<PGresult*>(result_), column) == sizeof(oid)); | |
| 171 | |
| 172 oid = *(const Oid*) PQgetvalue(reinterpret_cast<PGresult*>(result_), position_, column); | |
| 173 oid = ntohl(oid); | |
| 174 | |
| 175 PostgreSQLLargeObject::Read(result, database_, boost::lexical_cast<std::string>(oid)); | |
| 176 } | |
| 177 | |
| 178 | |
| 179 void PostgreSQLResult::GetLargeObject(void*& result, | |
| 180 size_t& size, | |
| 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, size, database_, boost::lexical_cast<std::string>(oid)); | |
| 192 } | |
| 193 | |
| 194 | |
| 195 IValue* PostgreSQLResult::GetValue(unsigned int column) const | |
| 196 { | |
| 197 if (IsNull(column)) | |
| 198 { | |
| 199 return new NullValue; | |
| 200 } | |
| 201 | |
| 202 Oid type = PQftype(reinterpret_cast<PGresult*>(result_), column); | |
| 203 | |
| 204 switch (type) | |
| 205 { | |
| 206 case BOOLOID: | |
| 207 // Convert Boolean values as integers | |
| 208 return new Integer64Value(GetBoolean(column) ? 1 : 0); | |
| 209 | |
| 210 case INT4OID: | |
| 211 return new Integer64Value(GetInteger(column)); | |
| 212 | |
| 213 case INT8OID: | |
| 214 return new Integer64Value(GetInteger64(column)); | |
| 215 | |
| 216 case TEXTOID: | |
| 217 case VARCHAROID: | |
| 218 return new Utf8StringValue(GetString(column)); | |
| 219 | |
| 220 case BYTEAOID: | |
| 221 return new BinaryStringValue(GetString(column)); | |
| 222 | |
| 223 case OIDOID: | |
| 224 { | |
|
14
9774802fd05f
PostgreSQLStorageArea working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
0
diff
changeset
|
225 std::auto_ptr<FileValue> value(new FileValue); |
| 0 | 226 GetLargeObject(value->GetContent(), column); |
| 227 return value.release(); | |
| 228 } | |
| 229 | |
| 230 default: | |
| 231 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 232 } | |
| 233 } | |
| 234 } |