QxOrm  1.2.3
C++ Object Relational Mapping library
QxSqlExpression.h
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00001 /****************************************************************************
00002 **
00003 ** http://www.qxorm.com/
00004 ** http://sourceforge.net/projects/qxorm/
00005 ** Original file by Lionel Marty
00006 **
00007 ** This file is part of the QxOrm library
00008 **
00009 ** This software is provided 'as-is', without any express or implied
00010 ** warranty. In no event will the authors be held liable for any
00011 ** damages arising from the use of this software.
00012 **
00013 ** GNU Lesser General Public License Usage
00014 ** This file must be used under the terms of the GNU Lesser
00015 ** General Public License version 2.1 as published by the Free Software
00016 ** Foundation and appearing in the file 'license.lgpl.txt' included in the
00017 ** packaging of this file.  Please review the following information to
00018 ** ensure the GNU Lesser General Public License version 2.1 requirements
00019 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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00021 ** If you have questions regarding the use of this file, please contact :
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00024 ****************************************************************************/
00025 
00026 #ifndef _QX_SQL_EXPRESSION_H_
00027 #define _QX_SQL_EXPRESSION_H_
00028 
00029 #ifdef _MSC_VER
00030 #pragma once
00031 #endif
00032 
00040 #include <QxDao/QxSqlElement/IxSqlElement.h>
00041 
00042 namespace qx {
00043 namespace dao {
00044 namespace detail {
00045 
00050 class QX_DLL_EXPORT QxSqlExpression : public IxSqlElement
00051 {
00052 
00053 public:
00054 
00055    enum type { _where, _and, _or, 
00056                _open_parenthesis, _close_parenthesis };
00057 
00058 protected:
00059 
00060    QxSqlExpression::type m_type;
00061 
00062 public:
00063 
00064    QxSqlExpression(int index, QxSqlExpression::type t);
00065    virtual ~QxSqlExpression();
00066 
00067    virtual QString toString() const;
00068    virtual void resolve(QSqlQuery & query) const;
00069    virtual void postProcess(QString & sql) const;
00070 
00071 };
00072 
00073 typedef boost::shared_ptr<QxSqlExpression> QxSqlExpression_ptr;
00074 
00075 } // namespace detail
00076 } // namespace dao
00077 } // namespace qx
00078 
00079 #endif // _QX_SQL_EXPRESSION_H_