StringCollectionImpl.h

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//==============================================================================================
//  FILENAME    :   StringCollectionImpl.h
//  AUTHOR      :   Yi Luo
//  CREATION    :   12/19/02
//  Copyright (C) MicroStrategy, Inc. 2002
//==============================================================================================
#ifndef MDataType_StringCollectionImpl_h
#define MDataType_StringCollectionImpl_h

#include "PDCvector"
#include <string>

#include "../StringCollection.h"

namespace MDataType
{
    class StringCollectionImpl:
        public StringCollection
    {
    public:
    
        StringCollectionImpl();
        virtual ~StringCollectionImpl() throw()
        {
        }

    protected:

        virtual void Insert(const char* ipString);

        virtual void Insert(const StringCollection& irStringCollection);

        virtual size_t GetCount() const throw();

        virtual const char* GetString(size_t iStringIndex) const;

        virtual void Clear();

    public:

        // The elements (pointers) of mvStrings are allocated on heap.
        typedef std::vector<std::string*> StringVector;

    private:

        StringVector mvStrings;

        class StringVectorGuard
        {
        public:

            StringVectorGuard(StringVector& irStringVector);
            ~StringVectorGuard() throw();
            void Dismiss() throw();

        private:

            StringVector& mrStringVector;
            bool mDismissed;
        };

        const StringVectorGuard mCleanupGuard;
    };
}

#endif // MDataType_StringCollectionImpl_h