QxOrm 1.1.8
C++ Object Relational Mapping library
IxFunction.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.
00020 **
00021 ** If you have questions regarding the use of this file, please contact :
00022 ** contact@qxorm.com
00023 **
00024 ****************************************************************************/
00025 
00026 #ifndef _IX_FUNCTION_H_
00027 #define _IX_FUNCTION_H_
00028 
00029 #ifdef _MSC_VER
00030 #pragma once
00031 #endif
00032 
00040 #include <boost/any.hpp>
00041 #include <boost/function.hpp>
00042 #include <boost/lexical_cast.hpp>
00043 #include <boost/static_assert.hpp>
00044 #include <boost/type_traits/is_same.hpp>
00045 
00046 #include <QxCommon/QxBool.h>
00047 
00048 #include <QxCollection/QxCollection.h>
00049 
00050 #include <QxFunction/QxFunctionError.h>
00051 #include <QxFunction/QxFunctionMacro.h>
00052 
00053 #include <QxTraits/remove_attr.h>
00054 
00055 namespace qx {
00056 
00061 class IxFunction
00062 {
00063 
00064 protected:
00065 
00066    QString m_sSeparator;   
00067 
00068 public:
00069 
00070    typedef std::vector<boost::any> type_any_params;
00071 
00072    IxFunction() : m_sSeparator("|") { ; }
00073    virtual ~IxFunction() { ; }
00074 
00075    QString getSeparator() const           { return m_sSeparator; }
00076    void setSeparator(const QString & s)   { m_sSeparator = s; }
00077 
00078    virtual qx_bool invoke(const QString & params = QString(), boost::any * ret = NULL) const = 0;
00079    virtual qx_bool invoke(const type_any_params & params, boost::any * ret = NULL) const = 0;
00080    virtual qx_bool invoke(void * pOwner, const QString & params = QString(), boost::any * ret = NULL) const = 0;
00081    virtual qx_bool invoke(void * pOwner, const type_any_params & params, boost::any * ret = NULL) const = 0;
00082 
00083    virtual qx_bool isValidFct() const = 0;
00084    virtual qx_bool isValidParams(const QString & params) const = 0;
00085    virtual qx_bool isValidParams(const type_any_params & params) const = 0;
00086 
00087    template <class T>
00088    qx_bool isValidOwner(void * pOwner, T * dummy) const
00089    {
00090       Q_UNUSED(dummy);
00091       typedef boost::is_same<T, void> qx_verify_owner_tmp;
00092       BOOST_STATIC_ASSERT(! qx_verify_owner_tmp::value);
00093       if (! pOwner) { return qx_bool(false, 0, QX_FUNCTION_ERR_NULL_OWNER); }
00094       if (! dynamic_cast<T *>(static_cast<T *>(pOwner))) { return qx_bool(false, 0, QX_FUNCTION_ERR_INVALID_OWNER); }
00095       return true;
00096    }
00097 
00098    template <class T>
00099    qx_bool isValid(const T & params) const
00100    {
00101       qx_bool bValid = isValidFct(); if (! bValid) { return bValid; };
00102       bValid = isValidParams(params); if (! bValid) { return bValid; };
00103       return true;
00104    }
00105 
00106    template <class T, class U>
00107    qx_bool isValid(void * pOwner, const T & params, U * dummy) const
00108    {
00109       Q_UNUSED(dummy);
00110       qx_bool bValid = isValidFct(); if (! bValid) { return bValid; };
00111       bValid = isValidParams(params); if (! bValid) { return bValid; };
00112       bValid = isValidOwner<U>(pOwner, NULL); if (! bValid) { return bValid; };
00113       return true;
00114    }
00115 
00116 };
00117 
00118 typedef boost::shared_ptr<IxFunction> IxFunction_ptr;
00119 typedef QxCollection<QString, IxFunction_ptr> IxFunctionX;
00120 typedef boost::shared_ptr<IxFunctionX> IxFunctionX_ptr;
00121 
00122 } // namespace qx
00123 
00124 #endif // _IX_FUNCTION_H_
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