1// Copyright 2011 The Kyua Authors. 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 store/write_backend.hpp 30/// Interface to the backend database for write-only operations. 31 32#if !defined(STORE_WRITE_BACKEND_HPP) 33#define STORE_WRITE_BACKEND_HPP 34 35#include "store/write_backend_fwd.hpp" 36 37#include <memory> 38 39#include "store/metadata_fwd.hpp" 40#include "store/write_transaction_fwd.hpp" 41#include "utils/fs/path_fwd.hpp" 42#include "utils/sqlite/database_fwd.hpp" 43 44namespace store { 45 46 47namespace detail { 48 49 50utils::fs::path schema_file(void); 51metadata initialize(utils::sqlite::database&); 52 53 54} // anonymous namespace 55 56 57/// Public interface to the database store for write-only operations. 58class write_backend { 59 struct impl; 60 61 /// Pointer to the shared internal implementation. 62 std::shared_ptr< impl > _pimpl; 63 64 friend class metadata; 65 66 write_backend(impl*); 67 68public: 69 ~write_backend(void); 70 71 static write_backend open_rw(const utils::fs::path&); 72 void close(void); 73 74 utils::sqlite::database& database(void); 75 write_transaction start_write(void); 76}; 77 78 79} // namespace store 80 81#endif // !defined(STORE_WRITE_BACKEND_HPP) 82