00001 /* 00002 EyeDB Object Database Management System 00003 Copyright (C) 1994-2008 SYSRA 00004 00005 EyeDB is free software; you can redistribute it and/or 00006 modify it under the terms of the GNU Lesser General Public 00007 License as published by the Free Software Foundation; either 00008 version 2.1 of the License, or (at your option) any later version. 00009 00010 EyeDB is distributed in the hope that it will be useful, 00011 but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00013 Lesser General Public License for more details. 00014 00015 You should have received a copy of the GNU Lesser General Public 00016 License along with this library; if not, write to the Free Software 00017 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA 00018 */ 00019 00020 /* 00021 Author: Eric Viara <viara@sysra.com> 00022 */ 00023 00024 00025 #ifndef _EYEDB_ABSTRACT_ITERATOR_H 00026 #define _EYEDB_ABSTRACT_ITERATOR_H 00027 00028 namespace eyedb { 00029 00035 class Oid; 00036 class Object; 00037 class Value; 00038 class ValueArray; 00039 class Iterator; 00040 class OQL; 00041 00045 class AbstractIterator { 00046 00047 public: 00051 AbstractIterator(); 00052 00059 virtual Bool next(Oid &oid) = 0; 00060 00068 virtual Bool next(ObjectPtr &obj, 00069 const RecMode *recmode = RecMode::NoRecurs) = 0; 00070 00078 virtual Bool next(Object *&obj, 00079 const RecMode *recmode = RecMode::NoRecurs) = 0; 00080 00087 virtual Bool next(Value &v) = 0; 00088 00092 virtual ~AbstractIterator() = 0; 00093 00094 protected: 00095 Status status; 00096 }; 00097 00102 } 00103 #endif