tabseamless.h

linux下一款GIS程序源码

// tabseamless.h: interface for the TABSeamless class.
//
//////////////////////////////////////////////////////////////////////

#ifndef  TABSeamless_H
#define  TABSeamless_H


#include "mapinfofile.h"
#include "tabfile.h"

class TABSeamless : public MapInfoFile  
{
  private:
    char        *m_pszFname;
    char        *m_pszPath;
    TABAccess   m_eAccessMode;
    UGKFeatureDefn *m_poFeatureDefnRef;

    TABFile     *m_poIndexTable;
    int         m_nTableNameField;
    int         m_nCurBaseTableId;
    TABFile     *m_poCurBaseTable;
    UGKBool       m_bEOF;

    ///////////////
    // Private Read access specific stuff
    //
    int         OpenForRead(const char *pszFname, 
                            UGKBool bTestOpenNoError = FALSE );
    int         OpenBaseTable(TABFeature *poIndexFeature,
                              UGKBool bTestOpenNoError = FALSE);
    int         OpenBaseTable(int nTableId, UGKBool bTestOpenNoError = FALSE);
    int         OpenNextBaseTable(UGKBool bTestOpenNoError =FALSE);
    int         EncodeFeatureId(int nTableId, int nBaseFeatureId);
    int         ExtractBaseTableId(int nEncodedFeatureId);
    int         ExtractBaseFeatureId(int nEncodedFeatureId);
public:
	TABSeamless();
	virtual ~TABSeamless();

    virtual TABFileClass GetFileClass() {return TABFC_TABSeamless;}

    virtual int Open(const char *pszFname, const char *pszAccess,
                     UGKBool bTestOpenNoError = FALSE );
    virtual int Close();

    virtual const char *GetTableName()
           {return m_poFeatureDefnRef?m_poFeatureDefnRef->GetName():"";};

    //virtual void        SetSpatialFilter( UGKGeometry * );

    virtual void        ResetReading();
    virtual int         TestCapability( const char * pszCap );
    virtual int         GetFeatureCount (int bForce);
    virtual int         GetExtent(UGKEnvelope *psExtent, int bForce);

    ///////////////
    // Read access specific stuff
    //

    virtual int GetNextFeatureId(int nPrevId);
    virtual TABFeature *GetFeatureRef(int nFeatureId);
    virtual UGKFeatureDefn *GetLayerDefn();

    virtual TABFieldType GetNativeFieldType(int nFieldId);

    virtual int GetBounds(double &dXMin, double &dYMin, 
                          double &dXMax, double &dYMax,
                          UGKBool bForce = TRUE );
    
    //virtual UGKSpatialReference *GetSpatialRef();

    virtual int GetFeatureCountByType(int &numPoints, int &numLines,
                                      int &numRegions, int &numTexts,
                                      UGKBool bForce = TRUE);

    virtual UGKBool IsFieldIndexed(int nFieldId);
    virtual UGKBool IsFieldUnique(int nFieldId);

    ///////////////
    // Write access specific stuff
    //
    virtual int SetBounds(double dXMin, double dYMin, 
                          double dXMax, double dYMax)   {return -1;}
    virtual int SetFeatureDefn(UGKFeatureDefn *poFeatureDefn,
                               TABFieldType *paeMapInfoNativeFieldTypes=NULL)
                                                        {return -1;}
    virtual int AddFieldNative(const char *pszName,
                               TABFieldType eMapInfoType,
                               int nWidth=0, int nPrecision=0,
                               UGKBool bIndexed=FALSE, 
                               UGKBool bUnique=FALSE)     {return -1;}

    //virtual int SetSpatialRef(UGKSpatialReference *poSpatialRef) {return -1;}

    virtual int SetFeature(TABFeature *poFeature, 
                           int nFeatureId = -1) {return -1;}

    virtual int SetFieldIndexed(int nFieldId)   {return -1;}

    ///////////////
    // semi-private.
    virtual int  GetProjInfo(TABProjInfo *poPI)
            { return m_poIndexTable?m_poIndexTable->GetProjInfo(poPI):-1; }
    virtual int  SetProjInfo(TABProjInfo *poPI)         { return -1; }
    virtual int  SetMIFCoordSys(const char * /*pszMIFCoordSys*/) {return -1;};


    virtual void Dump(FILE *fpOut = NULL);

};

#endif