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#ifndef _CONNECTIVITY_DBASE_INDEX_HXX_
#define _CONNECTIVITY_DBASE_INDEX_HXX_

#include "connectivity/sdbcx/VIndex.hxx"
#include <com/sun/star/lang/XUnoTunnel.hpp>
#include "dbase/DTable.hxx"
#include "dbase/dindexnode.hxx"

#define dBASE_III_GROUP "dBase III"

namespace connectivity
{
    namespace dbase
    {
        class OIndexIterator;
        class ONDXKey;

        typedef sdbcx::OIndex ODbaseIndex_BASE;
        typedef file::OBoolOperator OBoolOperator_BASE;
        typedef file::OOperand OOperand_BASE;

        class ODbaseIndex :	public ODbaseIndex_BASE
        {
            friend SvStream& operator << (SvStream &rStream, ODbaseIndex&);
            friend SvStream& operator >> (SvStream &rStream, ODbaseIndex&);

            friend class ONDXNode;
            friend class ONDXPage;
            friend class ONDXPagePtr;
            friend class OIndexIterator;

        public:
            //==================================================================
            // Kopfsatz-Struktur, verbleibt im Speicher
            //==================================================================
            struct NDXHeader
            {
                sal_uInt32  db_rootpage;                    /* Position der Rootpage		*/
                sal_uInt32  db_pagecount;                   /* Anzahl Pages					*/
                sal_uInt8	db_frei[4];						/* reserviert					*/
                sal_uInt16  db_keylen;						/* Laenge des Schluessels	    */
                sal_uInt16  db_maxkeys;						/* Max. # keys pro Seite	    */
                sal_uInt16  db_keytype;                     /* Art des Schluessels
                                                           (0-Text)
                                                           (1-Numerisch)				*/
                sal_uInt16  db_keyrec;                      /* Laenge eines IndexSatzes
                                                           SatzNr + keylen				*/
                sal_uInt8	db_frei1[3];					/* reserviert					*/
                sal_uInt8	db_unique;						/* eindeutig					*/
                char		db_name[488];                   /* index_name	(Feldname)		*/
            };

        private:
            SvStream*		m_pFileStream;					// Stream zum Lesen/Schreiben des Index
            NDXHeader		m_aHeader;
            ONDXPageList    m_aCollector;                   // Pool von nicht mehr benoetigten Seiten
            ONDXPagePtr		m_aRoot,						// Wurzel des b+ Baums
                            m_aCurLeaf;					// aktuelles Blatt
            USHORT			m_nCurNode;					// Position des aktuellen Knoten

            sal_uInt32			m_nPageCount,
                            m_nRootPage;

            ODbaseTable*	m_pTable;
            BOOL			m_bUseCollector : 1;						// Verwenden des GarbageCollectors

            ::rtl::OUString getCompletePath();
            void closeImpl();
            /* closes and kill the index file and throws an error.
            */
            void impl_killFileAndthrowError_throw(sal_uInt16 _nErrorId,const ::rtl::OUString& _sFile);
        protected:
            virtual ~ODbaseIndex();
        public:
            ODbaseIndex(ODbaseTable* _pTable);
            ODbaseIndex(ODbaseTable* _pTable,const NDXHeader& _aHeader,const ::rtl::OUString& _Name);

            sal_Bool openIndexFile();
            virtual void refreshColumns();

            // com::sun::star::lang::XUnoTunnel
            virtual sal_Int64 SAL_CALL getSomething( const com::sun::star::uno::Sequence< sal_Int8 >& aIdentifier ) throw(com::sun::star::uno::RuntimeException);
            static com::sun::star::uno::Sequence< sal_Int8 > getUnoTunnelImplementationId();

            virtual void SAL_CALL acquire() throw();
            virtual void SAL_CALL release() throw();

            const ODbaseTable* getTable() const { return m_pTable; }
            const NDXHeader& getHeader() const { return m_aHeader; }
            virtual OIndexIterator* createIterator(OBoolOperator_BASE* pOp,
                                                         const OOperand_BASE* pOperand = NULL);

            void SetRootPos(sal_uInt32 nPos)		{m_nRootPage = nPos;}
            void SetPageCount(sal_uInt32 nCount)	{m_nPageCount = nCount;}

            sal_uInt32 GetRootPos()					{return m_nRootPage;}
            sal_uInt32 GetPageCount()				{return m_nPageCount;}

            BOOL IsText() const					{return m_aHeader.db_keytype == 0;}
            USHORT GetMaxNodes() const			{return m_aHeader.db_maxkeys;}

            virtual BOOL Insert(sal_uInt32 nRec, const ORowSetValue& rValue);
            virtual BOOL Update(sal_uInt32 nRec, const ORowSetValue&, const ORowSetValue&);
            virtual BOOL Delete(sal_uInt32 nRec, const ORowSetValue& rValue);
            virtual BOOL Find(sal_uInt32 nRec, const ORowSetValue& rValue);

            void createINFEntry();
            BOOL CreateImpl();
            BOOL DropImpl();

            DECLARE_SERVICE_INFO();
        protected:

            ONDXPage* CreatePage(sal_uInt32 nPagePos, ONDXPage* pParent = NULL, BOOL bLoad = FALSE);
            void Collect(ONDXPage*);
            ONDXPagePtr getRoot();

            sal_Bool isUnique() const { return m_IsUnique; }
            BOOL UseCollector() const {return m_bUseCollector;}
            // Tree operationen
            void Insert(ONDXPagePtr aCurPage, ONDXNode& rNode);
            void Release(BOOL bSave = TRUE);
            BOOL ConvertToKey(ONDXKey* rKey, sal_uInt32 nRec, const ORowSetValue& rValue);
        };

        SvStream& operator << (SvStream &rStream, ODbaseIndex&);
        SvStream& operator >> (SvStream &rStream, ODbaseIndex&);
    }
}

#endif // _CONNECTIVITY_DBASE_INDEX_HXX_


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