DirectoryEntry.h

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#ifndef DIRECTORYENTRY_H_
#define DIRECTORYENTRY_H_

#include "LogEntry.h"

#include "component/FailureMode.h"
#include "data/DataElement.h"
#include "data/Slate.h"

class RingBufferVoid;

class DirectoryEntry : public LogEntry
{
public:

    typedef enum
    {
        ACCESSOR = 'a', 
        ELEMENT =  'e', 
        NAME =     'n', 
        VERSION =  'v', 

    } DirectoryType;
    static const int DIRECTORY_TYPE_MASK = 7 << 2;

    static unsigned short GetCurrentLogVersion()
    {
        return CurrentLogVersion_;
    }

    static unsigned short GetMinimumLogVersion()
    {
        return MinimumLogVersion_;
    }

    DirectoryEntry( const short version = 0 );

    DirectoryEntry( DataAccess* dataAccess );

    DirectoryEntry( const CodedStr* name );

    DirectoryEntry( ElementURI* elementURI );

    virtual ~DirectoryEntry();

    void* operator new( size_t size );

    void operator delete( void* p );

    static DirectoryEntry* Read( Timestamp& timeBase, InStream &inStream, unsigned short firstWord, Logger& logger );

    virtual unsigned int write( Timestamp& timeBase, OutStream& logStream ) const;

    virtual Str toString( const Unit* unit = NULL ) const;

    static const char* DirectoryTypeToString( DirectoryType directoryType );

    DirectoryType getDirectoryType( void ) const
    {
        return directoryType_;
    }

protected:

    static unsigned short MinimumLogVersion_;

    static unsigned short CurrentLogVersion_;

    DirectoryType directoryType_;

    union
    {
        unsigned short version_;
        DataAccess* dataAccess_;
        ElementURI* elementURI_;
        const CodedStr* name_;
    };

    bool wasRead_;

    static RingBufferVoid* MallocRing_;

    class StaticDestructor
    {
    public:
        ~StaticDestructor();
    };

    static DirectoryEntry::StaticDestructor StaticDestructor_;

    static FlexArray<ElementURI*> ElementStore_;
};

#endif /*DIRECTORYENTRY_H_*/