00001 // database row base class -*- C++ -*- 00002 // $Id: row_base.h,v 1.5 2004/01/28 21:21:08 roger Exp $ 00003 // 00004 // Copyright (C) 2003 Roger Leigh <rleigh@debian.org> 00005 // 00006 // 00007 // All rights reserved. 00008 // 00009 // Redistribution and use in source and binary forms, with or without 00010 // modification, are permitted provided that the following conditions 00011 // are met: 00012 // 00013 // * Redistributions of source code must retain the above copyright 00014 // notice, this list of conditions and the following disclaimer. 00015 // * Redistributions in binary form must reproduce the above 00016 // copyright notice, this list of conditions and the following 00017 // disclaimer in the documentation and/or other materials provided 00018 // with the distribution. 00019 // * Neither the name of the author, nor the names of other 00020 // contributors may be used to endorse or promote products derived 00021 // from this software without specific prior written permission. 00022 // 00023 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 00024 // CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 00025 // INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 00026 // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 00027 // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 00028 // BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 00029 // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 00030 // TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00031 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 00032 // ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 00033 // TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 00034 // THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00035 // SUCH DAMAGE. 00036 // 00038 00039 #ifndef PQXX_OBJECT_ROW_BASE_H 00040 #define PQXX_OBJECT_ROW_BASE_H 00041 00042 #include <sigc++/object.h> 00043 #include <sigc++/signal.h> 00044 #include <sigc++/object_slot.h> 00045 00046 #include <pqxx-object/transaction.h> 00047 00048 namespace pqxxobject 00049 { 00056 class row_base : public SigC::Object 00057 { 00058 public: 00060 enum row_state 00061 { 00066 STATE_UNINITIALISED, 00068 STATE_INITIALISED, 00073 STATE_INCONSISTENT 00074 }; 00075 00077 row_base(); 00078 00084 row_base(row_state status, 00085 bool modified=false); 00086 00090 row_base(const row_base& rhs); 00091 00093 virtual ~row_base(); 00094 00095 00100 row_base& operator = (const row_base& rhs); 00101 00106 row_state get_state() const; 00107 00112 bool is_modified() const; 00113 00118 void refresh(pqxxobject::transaction& tran); 00119 00124 void insert(pqxxobject::transaction& tran); 00125 00130 void update(pqxxobject::transaction& tran); 00131 00136 void erase(pqxxobject::transaction& tran); 00137 00142 SigC::Signal0<void>& signal_changed(); 00143 00148 SigC::Signal0<void>& signal_refreshed(); 00149 00154 SigC::Signal0<void>& signal_inserted(); 00155 00160 SigC::Signal0<void>& signal_updated(); 00161 00166 SigC::Signal0<void>& signal_erased(); 00167 00168 protected: 00175 virtual void refresh_impl(pqxxobject::transaction& tran); 00176 00183 virtual void insert_impl(pqxxobject::transaction& tran); 00184 00191 virtual void update_impl(pqxxobject::transaction& tran); 00192 00199 virtual void erase_impl(pqxxobject::transaction& tran); 00200 00202 row_state m_state; 00204 bool m_modified; 00205 00207 SigC::Signal0<void> m_signal_changed; 00209 SigC::Signal0<void> m_signal_refreshed; 00211 SigC::Signal0<void> m_signal_inserted; 00213 SigC::Signal0<void> m_signal_updated; 00215 SigC::Signal0<void> m_signal_erased; 00216 00217 }; // class row_base 00218 00219 }; // namespace pqxxobject 00220 00221 #endif // PQXX_OBJECT_ROW_BASE_H