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DataValue.h (Maintainer: Marc Sturm)

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00001 // -*- Mode: C++; tab-width: 2; -*-
00002 // vi: set ts=2:
00003 //
00004 // --------------------------------------------------------------------------
00005 //                   OpenMS Mass Spectrometry Framework
00006 // --------------------------------------------------------------------------
00007 //  Copyright (C) 2003-2008 -- Oliver Kohlbacher, Knut Reinert
00008 //
00009 //  This library is free software; you can redistribute it and/or
00010 //  modify it under the terms of the GNU Lesser General Public
00011 //  License as published by the Free Software Foundation; either
00012 //  version 2.1 of the License, or (at your option) any later version.
00013 //
00014 //  This library is distributed in the hope that it will be useful,
00015 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
00016 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00017 //  Lesser General Public License for more details.
00018 //
00019 //  You should have received a copy of the GNU Lesser General Public
00020 //  License along with this library; if not, write to the Free Software
00021 //  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00022 //
00023 // --------------------------------------------------------------------------
00024 // $Maintainer: Marc Sturm $
00025 // --------------------------------------------------------------------------
00026 
00027 #ifndef OPENMS_DATASTRUCTURES_DATAVALUE_H
00028 #define OPENMS_DATASTRUCTURES_DATAVALUE_H
00029 
00030 #include <OpenMS/CONCEPT/Exception.h>
00031 #include <OpenMS/DATASTRUCTURES/String.h>
00032 #include <QtCore/QString>
00033 
00034 namespace OpenMS
00035 {
00036 
00048   class DataValue
00049   {
00050 
00051     public:
00052 
00054       static const DataValue EMPTY;
00055   
00057       enum DataType {
00058         STRING_VALUE,  
00059         INT_VALUE,     
00060         DOUBLE_VALUE,  
00061         EMPTY_VALUE    
00062         };
00063       
00065 
00066 
00067       DataValue();
00069       DataValue(const char*);
00071       DataValue(const String&);
00073       DataValue(DoubleReal);
00075       DataValue(Real);
00077       DataValue(Int);
00079       DataValue(UInt);
00081       DataValue(const DataValue&);
00083       virtual ~DataValue();
00085       
00089 
00090 
00091       operator std::string() const  throw(Exception::ConversionError);
00093       operator DoubleReal() const  throw(Exception::ConversionError);
00095       operator Real() const throw(Exception::ConversionError);
00097       operator Int() const throw(Exception::ConversionError) ;
00099       operator UInt() const throw(Exception::ConversionError) ;
00106       const char* toChar() const throw(Exception::ConversionError);
00108       
00112 
00113 
00114       String toString() const;
00116       QString toQString() const;
00118 
00120       inline DataType valueType() const
00121       {
00122         return value_type_;
00123       }
00124   
00126       DataValue& operator = (const DataValue&);
00127       
00129       inline bool isEmpty() const
00130       {
00131         return value_type_ == EMPTY_VALUE;
00132       }
00133   
00135       friend std::ostream& operator<<(std::ostream&, const DataValue&);
00136   
00138       friend bool operator==(const DataValue&, const DataValue&);
00140       friend bool operator!=(const DataValue&, const DataValue&);
00141 
00142     protected:
00144       DataType value_type_;
00145   
00147       union
00148       {
00149         PointerSizeInt int_;
00150         DoubleReal dou_;
00151         String* str_;     
00152       } data_;
00153   };
00154 }
00155 
00156 #endif // OPENMS_DATASTRUCTURES_DATAVALUE_H
00157 

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