Mercurial > hg > orthanc
annotate Core/SQLite/Statement.cpp @ 1247:32fcc5dc7562
abstraction
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Mon, 08 Dec 2014 13:54:27 +0100 |
| parents | 3f62e1269cca |
| children | 63d47b1fa239 |
| rev | line source |
|---|---|
| 0 | 1 /** |
| 59 | 2 * Orthanc - A Lightweight, RESTful DICOM Store |
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3 * |
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4 * Copyright (C) 2012-2014 Sebastien Jodogne <s.jodogne@gmail.com>, |
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5 * Medical Physics Department, CHU of Liege, Belgium |
| 0 | 6 * |
| 17 | 7 * Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 8 * | |
| 9 * Redistribution and use in source and binary forms, with or without | |
| 10 * modification, are permitted provided that the following conditions are | |
| 11 * met: | |
| 0 | 12 * |
| 17 | 13 * * Redistributions of source code must retain the above copyright |
| 14 * notice, this list of conditions and the following disclaimer. | |
| 15 * * Redistributions in binary form must reproduce the above | |
| 16 * copyright notice, this list of conditions and the following disclaimer | |
| 17 * in the documentation and/or other materials provided with the | |
| 18 * distribution. | |
| 19 * * Neither the name of Google Inc., the name of the CHU of Liege, | |
| 20 * nor the names of its contributors may be used to endorse or promote | |
| 21 * products derived from this software without specific prior written | |
| 22 * permission. | |
| 23 * | |
| 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 25 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 26 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 27 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 28 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 29 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 34 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 0 | 35 **/ |
| 36 | |
| 37 | |
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38 #if ORTHANC_SQLITE_STANDALONE != 1 |
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39 #include "../PrecompiledHeaders.h" |
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40 #endif |
| 0 | 41 |
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42 #include "Statement.h" |
| 0 | 43 #include "Connection.h" |
| 44 | |
| 45 #include <sqlite3.h> | |
| 46 #include <string.h> | |
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47 #include <stdio.h> |
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48 #include <algorithm> |
| 0 | 49 |
| 1226 | 50 #if ORTHANC_SQLITE_STANDALONE != 1 |
| 51 #include <glog/logging.h> | |
| 52 #endif | |
| 53 | |
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54 #if defined(_MSC_VER) |
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55 #define snprintf _snprintf |
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56 #endif |
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57 |
| 59 | 58 namespace Orthanc |
| 0 | 59 { |
| 60 namespace SQLite | |
| 61 { | |
| 62 int Statement::CheckError(int err) const | |
| 63 { | |
| 64 bool succeeded = (err == SQLITE_OK || err == SQLITE_ROW || err == SQLITE_DONE); | |
| 65 if (!succeeded) | |
| 66 { | |
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67 char buffer[128]; |
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68 snprintf(buffer, sizeof(buffer) - 1, "SQLite error code %d", err); |
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69 throw OrthancSQLiteException(buffer); |
| 0 | 70 } |
| 71 | |
| 72 return err; | |
| 73 } | |
| 74 | |
| 75 void Statement::CheckOk(int err) const | |
| 76 { | |
| 77 if (err == SQLITE_RANGE) | |
| 78 { | |
| 79 // Binding to a non-existent variable is evidence of a serious error. | |
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80 throw OrthancSQLiteException("Bind value out of range"); |
| 0 | 81 } |
| 82 else if (err != SQLITE_OK) | |
| 83 { | |
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84 char buffer[128]; |
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85 snprintf(buffer, sizeof(buffer) - 1, "SQLite error code %d", err); |
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86 throw OrthancSQLiteException(buffer); |
| 0 | 87 } |
| 88 } | |
| 89 | |
| 90 | |
| 91 Statement::Statement(Connection& database, | |
| 92 const StatementId& id, | |
| 93 const std::string& sql) : | |
| 94 reference_(database.GetCachedStatement(id, sql.c_str())) | |
| 95 { | |
| 96 Reset(true); | |
| 97 } | |
| 98 | |
| 99 | |
| 100 Statement::Statement(Connection& database, | |
| 101 const StatementId& id, | |
| 102 const char* sql) : | |
| 103 reference_(database.GetCachedStatement(id, sql)) | |
| 104 { | |
| 105 Reset(true); | |
| 106 } | |
| 107 | |
| 108 | |
| 109 Statement::Statement(Connection& database, | |
| 110 const std::string& sql) : | |
| 111 reference_(database.GetWrappedObject(), sql.c_str()) | |
| 112 { | |
| 113 } | |
| 114 | |
| 115 | |
| 116 Statement::Statement(Connection& database, | |
| 117 const char* sql) : | |
| 118 reference_(database.GetWrappedObject(), sql) | |
| 119 { | |
| 120 } | |
| 121 | |
| 122 | |
| 123 bool Statement::Run() | |
| 124 { | |
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125 #if ORTHANC_SQLITE_STANDALONE != 1 |
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126 VLOG(1) << "SQLite::Statement::Run " << sqlite3_sql(GetStatement()); |
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127 #endif |
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128 |
| 0 | 129 return CheckError(sqlite3_step(GetStatement())) == SQLITE_DONE; |
| 130 } | |
| 131 | |
| 132 bool Statement::Step() | |
| 133 { | |
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134 #if ORTHANC_SQLITE_STANDALONE != 1 |
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135 VLOG(1) << "SQLite::Statement::Step " << sqlite3_sql(GetStatement()); |
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136 #endif |
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137 |
| 0 | 138 return CheckError(sqlite3_step(GetStatement())) == SQLITE_ROW; |
| 139 } | |
| 140 | |
| 141 void Statement::Reset(bool clear_bound_vars) | |
| 142 { | |
| 143 // We don't call CheckError() here because sqlite3_reset() returns | |
| 144 // the last error that Step() caused thereby generating a second | |
| 145 // spurious error callback. | |
| 146 if (clear_bound_vars) | |
| 147 sqlite3_clear_bindings(GetStatement()); | |
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148 //VLOG(1) << "SQLite::Statement::Reset"; |
| 0 | 149 sqlite3_reset(GetStatement()); |
| 150 } | |
| 151 | |
| 152 std::string Statement::GetOriginalSQLStatement() | |
| 153 { | |
| 154 return std::string(sqlite3_sql(GetStatement())); | |
| 155 } | |
| 156 | |
| 157 | |
| 158 void Statement::BindNull(int col) | |
| 159 { | |
| 160 CheckOk(sqlite3_bind_null(GetStatement(), col + 1)); | |
| 161 } | |
| 162 | |
| 163 void Statement::BindBool(int col, bool val) | |
| 164 { | |
| 165 BindInt(col, val ? 1 : 0); | |
| 166 } | |
| 167 | |
| 168 void Statement::BindInt(int col, int val) | |
| 169 { | |
| 170 CheckOk(sqlite3_bind_int(GetStatement(), col + 1, val)); | |
| 171 } | |
| 172 | |
| 173 void Statement::BindInt64(int col, int64_t val) | |
| 174 { | |
| 175 CheckOk(sqlite3_bind_int64(GetStatement(), col + 1, val)); | |
| 176 } | |
| 177 | |
| 178 void Statement::BindDouble(int col, double val) | |
| 179 { | |
| 180 CheckOk(sqlite3_bind_double(GetStatement(), col + 1, val)); | |
| 181 } | |
| 182 | |
| 183 void Statement::BindCString(int col, const char* val) | |
| 184 { | |
| 185 CheckOk(sqlite3_bind_text(GetStatement(), col + 1, val, -1, SQLITE_TRANSIENT)); | |
| 186 } | |
| 187 | |
| 188 void Statement::BindString(int col, const std::string& val) | |
| 189 { | |
| 190 CheckOk(sqlite3_bind_text(GetStatement(), | |
| 191 col + 1, | |
| 192 val.data(), | |
| 193 val.size(), | |
| 194 SQLITE_TRANSIENT)); | |
| 195 } | |
| 196 | |
| 197 /*void Statement::BindString16(int col, const string16& value) | |
| 198 { | |
| 199 BindString(col, UTF16ToUTF8(value)); | |
| 200 }*/ | |
| 201 | |
| 202 void Statement::BindBlob(int col, const void* val, int val_len) | |
| 203 { | |
| 204 CheckOk(sqlite3_bind_blob(GetStatement(), col + 1, val, val_len, SQLITE_TRANSIENT)); | |
| 205 } | |
| 206 | |
| 207 | |
| 208 int Statement::ColumnCount() const | |
| 209 { | |
| 210 return sqlite3_column_count(GetStatement()); | |
| 211 } | |
| 212 | |
| 213 | |
| 214 ColumnType Statement::GetColumnType(int col) const | |
| 215 { | |
| 216 // Verify that our enum matches sqlite's values. | |
| 217 assert(COLUMN_TYPE_INTEGER == SQLITE_INTEGER); | |
| 218 assert(COLUMN_TYPE_FLOAT == SQLITE_FLOAT); | |
| 219 assert(COLUMN_TYPE_TEXT == SQLITE_TEXT); | |
| 220 assert(COLUMN_TYPE_BLOB == SQLITE_BLOB); | |
| 221 assert(COLUMN_TYPE_NULL == SQLITE_NULL); | |
| 222 | |
| 223 return static_cast<ColumnType>(sqlite3_column_type(GetStatement(), col)); | |
| 224 } | |
| 225 | |
| 226 ColumnType Statement::GetDeclaredColumnType(int col) const | |
| 227 { | |
| 228 std::string column_type(sqlite3_column_decltype(GetStatement(), col)); | |
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229 std::transform(column_type.begin(), column_type.end(), column_type.begin(), tolower); |
| 0 | 230 |
| 231 if (column_type == "integer") | |
| 232 return COLUMN_TYPE_INTEGER; | |
| 233 else if (column_type == "float") | |
| 234 return COLUMN_TYPE_FLOAT; | |
| 235 else if (column_type == "text") | |
| 236 return COLUMN_TYPE_TEXT; | |
| 237 else if (column_type == "blob") | |
| 238 return COLUMN_TYPE_BLOB; | |
| 239 | |
| 240 return COLUMN_TYPE_NULL; | |
| 241 } | |
| 242 | |
| 80 | 243 bool Statement::ColumnIsNull(int col) const |
| 244 { | |
| 245 return sqlite3_column_type(GetStatement(), col) == SQLITE_NULL; | |
| 246 } | |
| 247 | |
| 0 | 248 bool Statement::ColumnBool(int col) const |
| 249 { | |
| 250 return !!ColumnInt(col); | |
| 251 } | |
| 252 | |
| 253 int Statement::ColumnInt(int col) const | |
| 254 { | |
| 255 return sqlite3_column_int(GetStatement(), col); | |
| 256 } | |
| 257 | |
| 258 int64_t Statement::ColumnInt64(int col) const | |
| 259 { | |
| 260 return sqlite3_column_int64(GetStatement(), col); | |
| 261 } | |
| 262 | |
| 263 double Statement::ColumnDouble(int col) const | |
| 264 { | |
| 265 return sqlite3_column_double(GetStatement(), col); | |
| 266 } | |
| 267 | |
| 268 std::string Statement::ColumnString(int col) const | |
| 269 { | |
| 270 const char* str = reinterpret_cast<const char*>( | |
| 271 sqlite3_column_text(GetStatement(), col)); | |
| 272 int len = sqlite3_column_bytes(GetStatement(), col); | |
| 273 | |
| 274 std::string result; | |
| 275 if (str && len > 0) | |
| 276 result.assign(str, len); | |
| 277 return result; | |
| 278 } | |
| 279 | |
| 280 /*string16 Statement::ColumnString16(int col) const | |
| 281 { | |
| 282 std::string s = ColumnString(col); | |
| 283 return !s.empty() ? UTF8ToUTF16(s) : string16(); | |
| 284 }*/ | |
| 285 | |
| 286 int Statement::ColumnByteLength(int col) const | |
| 287 { | |
| 288 return sqlite3_column_bytes(GetStatement(), col); | |
| 289 } | |
| 290 | |
| 291 const void* Statement::ColumnBlob(int col) const | |
| 292 { | |
| 293 return sqlite3_column_blob(GetStatement(), col); | |
| 294 } | |
| 295 | |
| 296 bool Statement::ColumnBlobAsString(int col, std::string* blob) | |
| 297 { | |
| 298 const void* p = ColumnBlob(col); | |
| 299 size_t len = ColumnByteLength(col); | |
| 300 blob->resize(len); | |
| 301 if (blob->size() != len) { | |
| 302 return false; | |
| 303 } | |
| 304 blob->assign(reinterpret_cast<const char*>(p), len); | |
| 305 return true; | |
| 306 } | |
| 307 | |
| 308 /*bool Statement::ColumnBlobAsString16(int col, string16* val) const | |
| 309 { | |
| 310 const void* data = ColumnBlob(col); | |
| 311 size_t len = ColumnByteLength(col) / sizeof(char16); | |
| 312 val->resize(len); | |
| 313 if (val->size() != len) | |
| 314 return false; | |
| 315 val->assign(reinterpret_cast<const char16*>(data), len); | |
| 316 return true; | |
| 317 }*/ | |
| 318 | |
| 724 | 319 /*bool Statement::ColumnBlobAsVector(int col, std::vector<char>* val) const |
| 0 | 320 { |
| 321 val->clear(); | |
| 322 | |
| 323 const void* data = sqlite3_column_blob(GetStatement(), col); | |
| 324 int len = sqlite3_column_bytes(GetStatement(), col); | |
| 325 if (data && len > 0) { | |
| 326 val->resize(len); | |
| 327 memcpy(&(*val)[0], data, len); | |
| 328 } | |
| 329 return true; | |
| 724 | 330 }*/ |
| 0 | 331 |
| 724 | 332 /*bool Statement::ColumnBlobAsVector( |
| 0 | 333 int col, |
| 334 std::vector<unsigned char>* val) const | |
| 335 { | |
| 336 return ColumnBlobAsVector(col, reinterpret_cast< std::vector<char>* >(val)); | |
| 724 | 337 }*/ |
| 0 | 338 |
| 339 } | |
| 340 } |