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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 #include <QxCommon/QxPropertyBag.h>
    00048
    00049 #include <QxCollection/QxCollection.h>
    00050
    00051 #include <QxFunction/QxFunctionError.h>
    00052 #include <QxFunction/QxFunctionMacro.h>
    00053
    00054 #include <QxTraits/remove_attr.h>
    00055
    00056 namespace qx {
    00057
    00062 class IxFunction : public qx::QxPropertyBag
    00063 {
    00064
    00065 protected:
    00066
    00067    QString m_sKey;
    00068    QString m_sSeparator;
    00069
    00070 public:
    00071
    00072    typedef std::vector<boost::any> type_any_params;
    00073
    00074    IxFunction() : qx::QxPropertyBag(), m_sSeparator("|") { ; }
    00075    virtual ~IxFunction() { ; }
    00076
    00077    QString getKey() const                 { return m_sKey; }
    00078    QString getSeparator() const           { return m_sSeparator; }
    00079
    00080    void setKey(const QString & s)         { m_sKey = s; }
    00081    void setSeparator(const QString & s)   { m_sSeparator = s; }
    00082
    00083    virtual qx_bool invoke(const QString & params = QString(), boost::any * ret = NULL) const = 0;
    00084    virtual qx_bool invoke(const type_any_params & params, boost::any * ret = NULL) const = 0;
    00085    virtual qx_bool invoke(void * pOwner, const QString & params = QString(), boost::any * ret = NULL) const = 0;
    00086    virtual qx_bool invoke(void * pOwner, const type_any_params & params, boost::any * ret = NULL) const = 0;
    00087
    00088    virtual qx_bool isValidFct() const = 0;
    00089    virtual qx_bool isValidParams(const QString & params) const = 0;
    00090    virtual qx_bool isValidParams(const type_any_params & params) const = 0;
    00091
    00092    template <class T>
    00093    qx_bool isValidOwner(void * pOwner, T * dummy) const
    00094    {
    00095       Q_UNUSED(dummy);
    00096       typedef boost::is_same<T, void> qx_verify_owner_tmp;
    00097       BOOST_STATIC_ASSERT(! qx_verify_owner_tmp::value);
    00098       if (! pOwner) { return qx_bool(false, 0, QX_FUNCTION_ERR_NULL_OWNER); }
    00099       if (! dynamic_cast<T *>(static_cast<T *>(pOwner))) { return qx_bool(false, 0, QX_FUNCTION_ERR_INVALID_OWNER); }
    00100       return true;
    00101    }
    00102
    00103    template <class T>
    00104    qx_bool isValid(const T & params) const
    00105    {
    00106       qx_bool bValid = isValidFct(); if (! bValid) { return bValid; };
    00107       bValid = isValidParams(params); if (! bValid) { return bValid; };
    00108       return true;
    00109    }
    00110
    00111    template <class T, class U>
    00112    qx_bool isValid(void * pOwner, const T & params, U * dummy) const
    00113    {
    00114       Q_UNUSED(dummy);
    00115       qx_bool bValid = isValidFct(); if (! bValid) { return bValid; };
    00116       bValid = isValidParams(params); if (! bValid) { return bValid; };
    00117       bValid = isValidOwner<U>(pOwner, NULL); if (! bValid) { return bValid; };
    00118       return true;
    00119    }
    00120
    00121 };
    00122
    00123 typedef boost::shared_ptr<IxFunction> IxFunction_ptr;
    00124 typedef QxCollection<QString, IxFunction_ptr> IxFunctionX;
    00125 typedef boost::shared_ptr<IxFunctionX> IxFunctionX_ptr;
    00126
    00127 } // namespace qx
    00128
    00129 #endif // _IX_FUNCTION_H_