1 // Copyright 2011 Google Inc. 2 // All rights reserved. 3 // 4 // Redistribution and use in source and binary forms, with or without 5 // modification, are permitted provided that the following conditions are 6 // met: 7 // 8 // * Redistributions of source code must retain the above copyright 9 // notice, this list of conditions and the following disclaimer. 10 // * Redistributions in binary form must reproduce the above copyright 11 // notice, this list of conditions and the following disclaimer in the 12 // documentation and/or other materials provided with the distribution. 13 // * Neither the name of Google Inc. nor the names of its contributors 14 // may be used to endorse or promote products derived from this software 15 // without specific prior written permission. 16 // 17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 29 /// \file c_gate.hpp 30 /// Provides direct access to the C state of the SQLite wrappers. 31 32 #if !defined(UTILS_SQLITE_C_GATE_HPP) 33 #define UTILS_SQLITE_C_GATE_HPP 34 35 extern "C" { 36 #include <sqlite3.h> 37 } 38 39 namespace utils { 40 namespace sqlite { 41 42 43 class database; 44 45 46 /// Gateway to the raw C database of SQLite 3. 47 /// 48 /// This class provides a mechanism to muck with the internals of the database 49 /// wrapper class. 50 /// 51 /// \warning The use of this class is discouraged. By using this class, you are 52 /// entering the world of unsafety. Anything you do through the objects exposed 53 /// through this class will not be controlled by RAII patterns not validated in 54 /// any other way, so you can end up corrupting the SQLite 3 state and later get 55 /// crashes on otherwise perfectly-valid C++ code. 56 class database_c_gate { 57 /// The C++ database that this class wraps. 58 database& _database; 59 60 public: 61 database_c_gate(database&); 62 ~database_c_gate(void); 63 64 static database connect(::sqlite3*); 65 66 ::sqlite3* c_database(void); 67 }; 68 69 70 } // namespace sqlite 71 } // namespace utils 72 73 #endif // !defined(UTILS_SQLITE_C_GATE_HPP) 74