blocxx

TempFileEnumerationImplBase.hpp

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00001 /*******************************************************************************
00002 * Copyright (C) 2005, Vintela, Inc. All rights reserved.
00003 * Copyright (C) 2006, Novell, Inc. All rights reserved.
00004 * 
00005 * Redistribution and use in source and binary forms, with or without
00006 * modification, are permitted provided that the following conditions are met:
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00008 *     * Redistributions of source code must retain the above copyright notice,
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00032 
00033 
00038 #ifndef BLOCXX_TEMP_FILE_ENUMERATION_IMPL_BASE_HPP_INCLUDE_GUARD_
00039 #define BLOCXX_TEMP_FILE_ENUMERATION_IMPL_BASE_HPP_INCLUDE_GUARD_
00040 #include "blocxx/BLOCXX_config.h"
00041 #include "blocxx/IntrusiveCountableBase.hpp"
00042 #include "blocxx/TempFileStream.hpp"
00043 
00044 // The classes and functions defined in this file are not meant for general
00045 // use, they are internal implementation details.  They may change at any time.
00046 
00047 namespace BLOCXX_NAMESPACE
00048 {
00049 
00050 class BLOCXX_COMMON_API TempFileEnumerationImplBase : public IntrusiveCountableBase
00051 {
00052 
00053 public:
00054    TempFileEnumerationImplBase();
00055    virtual ~TempFileEnumerationImplBase();
00056    bool hasMoreElements() const;
00057    size_t numberOfElements() const;
00058    void clear();
00059    bool usingTempFile() const;
00060 private:
00061    // Prevent copying or assignment
00062    TempFileEnumerationImplBase( const TempFileEnumerationImplBase& );
00063    TempFileEnumerationImplBase& operator=( const TempFileEnumerationImplBase& );
00064    size_t readSize(String const& filename);
00065 
00066 protected:
00067    void throwIfEmpty() const;
00068 
00069 protected:
00070    size_t m_size;
00071    TempFileStream m_Data;
00072 };
00073 
00074 } // end namespace BLOCXX_NAMESPACE
00075 
00076 #endif
00077