#ifndef _X_DATA_BASE_H_
#define _X_DATA_BASE_H_

//-----------------------------------------------------------------------------------------
namespace zdh
{
	//ݻ
	class XDataBase
	{
	public:
		XDataBase();
		XDataBase(const XDataBase & paramData);
		bool isChanged() const;
		void CleanChange();
		void setChanged(bool paramFlag);
	private:
		bool m_Change;
	};

	//-----------------------------------------------------------------------------------------
	template <class T>
	class XData : public XDataBase
	{
	public:
		typedef T TYPE;
		XData()
		{
		}
		XData(const T & paramData)
			:m_Data(paramData)
		{
		}

		const T & get() const
		{
			return m_Data;
		}

		T & get()
		{
			return m_Data;
		}

		const T & operator *() const
		{
			return m_Data;
		}


		void set(const T & paramData)
		{
			if (m_Data != paramData)
			{
				m_Data = paramData;
				setChanged(true);
			}
		}

		XData & operator = (const T & paramData)
		{
			set(paramData);
			return *this;
		}

		operator T() const
		{
			return m_Data;
		}
	private:
		XData & operator = (const XData &) { return *this; }
	private:
		T m_Data;
	};
}
#endif