harbour-core/harbour/include/hbapirdd.h

/*
 * $Id$
 */

/*
 * Harbour Project source code:
 * Header file for the RDD API
 *
 * Copyright 1999 {list of individual authors and e-mail addresses}
 * www - http://www.harbour-project.org
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this software; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
 *
 * As a special exception, the Harbour Project gives permission for
 * additional uses of the text contained in its release of Harbour.
 *
 * The exception is that, if you link the Harbour libraries with other
 * files to produce an executable, this does not by itself cause the
 * resulting executable to be covered by the GNU General Public License.
 * Your use of that executable is in no way restricted on account of
 * linking the Harbour library code into it.
 *
 * This exception does not however invalidate any other reasons why
 * the executable file might be covered by the GNU General Public License.
 *
 * This exception applies only to the code released by the Harbour
 * Project under the name Harbour.  If you copy code from other
 * Harbour Project or Free Software Foundation releases into a copy of
 * Harbour, as the General Public License permits, the exception does
 * not apply to the code that you add in this way.  To avoid misleading
 * anyone as to the status of such modified files, you must delete
 * this exception notice from them.
 *
 * If you write modifications of your own for Harbour, it is your choice
 * whether to permit this exception to apply to your modifications.
 * If you do not wish that, delete this exception notice.
 *
 */

#ifndef HB_APIRDD_H_
#define HB_APIRDD_H_

#include "hbapifs.h"
#include "dbinfo.ch"   /* Constants for SELF_ORDINFO, SELF_INFO(), SELF_RECINFO() */
#include "dbstruct.ch" /* Constants for SELF_FIELDINFO() */

HB_EXTERN_BEGIN

#define HARBOUR_MAX_RDD_DRIVERNAME_LENGTH       32
#define HARBOUR_MAX_RDD_ALIAS_LENGTH            32


/* RDD virtual machine integration functions */

extern USHORT hb_rddInsertAreaNode( char *szDriver );
extern USHORT  hb_rddGetCurrentFieldPos( char * szName );
extern int     hb_rddGetCurrentWorkAreaNumber( void );
void *         hb_rddGetCurrentWorkAreaPointer( void );
extern ERRCODE hb_rddSelectWorkAreaAlias( char * szAlias );
extern ERRCODE hb_rddSelectWorkAreaNumber( int iArea );
extern ERRCODE hb_rddSelectWorkAreaSymbol( PHB_SYMB pSymAlias );
extern ERRCODE hb_rddGetFieldValue( HB_ITEM_PTR pItem, PHB_SYMB pFieldSymbol );
extern ERRCODE hb_rddPutFieldValue( HB_ITEM_PTR pItem, PHB_SYMB pFieldSymbol );
extern ERRCODE hb_rddFieldGet( HB_ITEM_PTR pItem, PHB_SYMB pFieldSymbol );
extern ERRCODE hb_rddFieldPut( HB_ITEM_PTR pItem, PHB_SYMB pFieldSymbol );
extern void    hb_rddShutDown( void );



/* DBCMD errors */

#define EDBCMD_SEEK_BADPARAMETER          1001
#define EDBCMD_NOALIAS                    1002
#define EDBCMD_NOVAR                      1003
#define EDBCMD_USE_BADPARAMETER           1005
#define EDBCMD_REL_BADPARAMETER           1006
#define EDBCMD_FIELDNAME_BADPARAMETER     1009
#define EDBCMD_BADALIAS                   1010
#define EDBCMD_DUPALIAS                   1011
#define EDBCMD_DBCMDBADPARAMETER          1014
#define EDBCMD_BADPARAMETER               1015
#define EDBCMD_INFOBADPARAMETER           1032
#define EDBCMD_DBINFOBADPARAMETER         1034
#define EDBCMD_DBFILEPUTBADPARAMETER      1041
#define EDBCMD_DBFILEGETBADPARAMETER      1042
#define EDBCMD_NOTABLE                    2001
#define EDBCMD_EVAL_BADPARAMETER          2019



/* Flags for DBTRANSINFO */

#define DBTF_MATCH         0x0001
#define DBTF_PUTREC        0x0002



/* Codes for Locking methods */

#define DBLM_EXCLUSIVE     1
#define DBLM_MULTIPLE      2
#define DBLM_FILE          3


/* Codes for RawLock types */

#define FILE_LOCK          1
#define FILE_UNLOCK        2
#define REC_LOCK           3
#define REC_UNLOCK         4
#define HEADER_LOCK        5
#define HEADER_UNLOCK      6
#define APPEND_LOCK        7
#define APPEND_UNLOCK      8



/*
 * Forward declarations
 */
struct _RDDFUNCS;
struct _AREA;
struct _RDDNODE;


/*
*  DBFIELDINFO
*  -----------
*  The field structure
*/

typedef struct
{
   BYTE * atomName;        /* FIELD (symbol) name */
   USHORT uiType;          /* FIELD type */
   USHORT uiTypeExtended;  /* FIELD type extended */
   USHORT uiLen;           /* Overall FIELD length */
   USHORT uiDec;           /* Decimal places of numeric FIELD */
} DBFIELDINFO;

typedef DBFIELDINFO * LPDBFIELDINFO;



/*
 *  DBOPENINFO
 *  ----------
 *  The Open Info structure
 */

typedef struct
{
   USHORT uiArea;          /* Work Area number of the data store */
   BYTE * abName;          /* The qualified name of the data store */
   BYTE * atomAlias;       /* The logical name of the data store */
   BOOL   fShared;         /* Share mode of the data store */
   BOOL   fReadonly;       /* Readonly mode of the data store */
   BYTE * cdpId;           /* Id of a codepage */
   void * lpdbHeader;      /* Pointer to a header of the data store */
} DBOPENINFO;

typedef DBOPENINFO * LPDBOPENINFO;



/*
 *  DBORDERCONDINFO
 *  ---------------
 *  The Create Order conditional Info structure
 */

typedef struct _DBORDERCONDINFO
{
   BOOL     fActive;
   BYTE *   abFor;
   BYTE *   abWhile;
   PHB_ITEM itmCobFor;
   PHB_ITEM itmCobWhile;
   PHB_ITEM itmCobEval;
   LONG     lStep;
   LONG     lStartRecno;
   LONG     lNextCount;
   LONG     lRecno;
   BOOL     fRest;
   BOOL     fDescending;
   BOOL     fAll;
   BOOL     fAdditive;
   BOOL     fUseCurrent;
   BOOL     fCustom;
   BOOL     fNoOptimize;
   void *   lpvCargo;
} DBORDERCONDINFO;

typedef DBORDERCONDINFO * LPDBORDERCONDINFO;



/*
 *  DBORDERCREATE
 *  -------------
 *  The Create Order Info structure
 */

typedef struct
{
   LPDBORDERCONDINFO lpdbOrdCondInfo; /* Conditional information */
   BYTE *            abBagName;       /* Name of the Order bag */
   BYTE *            atomBagName;     /* Name of the Order */
   PHB_ITEM          itmOrder;
   BOOL              fUnique;         /* Flag to determine if all keys are unique */
   PHB_ITEM          itmCobExpr;      /* Code block containing the KEY expression */
   PHB_ITEM          abExpr;          /* String containing the KEY expression */
} DBORDERCREATEINFO;

typedef DBORDERCREATEINFO * LPDBORDERCREATEINFO;



/*
 *  DBORDERINFO
 *  -----------
 *  The Set Index Info structure
 */

typedef struct
{
   PHB_ITEM atomBagName;  /* Name of the Order Bag */
   PHB_ITEM itmOrder;     /* Name or Number of the Order */
   PHB_ITEM itmCobExpr;   /* Code block containing the KEY expression */
   PHB_ITEM itmResult;    /* Operation result */
   PHB_ITEM itmNewVal;    /* New Setting   */
   BOOL     fAllTags;     /* Open all tags */
} DBORDERINFO;

typedef DBORDERINFO * LPDBORDERINFO;



/*
 *  DBSCOPEINFO
 *  -----------
 *  The Scope Info structure
 */

typedef struct
{
   PHB_ITEM itmCobFor;   /* Code Block representation of a FOR clause */
   PHB_ITEM lpstrFor;    /* String representation of a FOR clause */
   PHB_ITEM itmCobWhile; /* Code Block representation of a WHILE clause */
   PHB_ITEM lpstrWhile;  /* String representation of a WHILE clause */
   PHB_ITEM lNext;       /* NEXT record */
   PHB_ITEM itmRecID;
   PHB_ITEM fRest;       /* TRUE if start from the current record */
   BOOL     fIgnoreFilter;
   BOOL     fIncludeDeleted;
   BOOL     fLast;
   BOOL     fIgnoreDuplicates;
} DBSCOPEINFO;

typedef DBSCOPEINFO * LPDBSCOPEINFO;



/*
 *  DBORDSCOPEINFO
 *  --------------
 *  The Order Scope Info structure
 */

typedef struct
{
   USHORT nScope;        /* scope operation: TOPSCOPE/ENDSCOPE */
   PHB_ITEM scopeValue;
} DBORDSCOPEINFO;

typedef DBORDSCOPEINFO * LPDBORDSCOPEINFO;



/*
 *  DBFILTERINFO
 *  ------------
 *  The Filter Info structure
 */

typedef struct
{
   PHB_ITEM itmCobExpr;       /* Block representation of the FILTER expression */
   PHB_ITEM abFilterText;     /* String representation of FILTER expression */
   BOOL     fFilter;
} DBFILTERINFO;

typedef DBFILTERINFO * LPDBFILTERINFO;



/*
 *  DBRELINFO
 *  ---------
 *  The Relationship Info structure
 */

typedef struct _DBRELINFO
{
   PHB_ITEM            itmCobExpr;   /* Block representation of the relational SEEK key */
   PHB_ITEM            abKey;        /* String representation of the relational SEEK key */
   BOOL                isScoped;     /* Is this relation scoped */
   struct _AREA      * lpaParent;    /* The parent of this relation */
   struct _AREA      * lpaChild;     /* The parents children */
   struct _DBRELINFO * lpdbriNext;   /* Next child or parent */
} DBRELINFO;

typedef DBRELINFO * LPDBRELINFO;



/*
 *  DBEVALINFO
 *  ----------
 *  The Evaluation Info structure
 *
 *  Contains information necessary for a block evaluation
 *  on each record of the workarea
 */

typedef struct
{
   PHB_ITEM    itmBlock;  /* The block to be evaluated */
   DBSCOPEINFO dbsci;     /* Scope info that limits the evaluation */
} DBEVALINFO;

typedef DBEVALINFO * LPDBEVALINFO;



/*
 *  DBTRANSITEM
 *  -----------
 *  The Transfer Item structure
 *
 *  Defines a single transfer item (usually a field) from
 *  one database to another; used by DBTRANSINFO
 */

typedef struct
{
   USHORT uiSource;       /* Field index number from the source */
   USHORT uiDest;         /* Destination field index number */
} DBTRANSITEM;

typedef DBTRANSITEM * LPDBTRANSITEM;



/*
 *  DBTRANSINFO
 *  -----------
 *  The Transfer Info structure
 *
 *  Defines a global transfer of data items from on workarea
 *  to another
 */

typedef struct
{
   struct _AREA * lpaSource;     /* Pointer to source work area */
   struct _AREA * lpaDest;       /* Pointer to dest work area */
   DBSCOPEINFO    dbsci;         /* Scope to limit transfer */
   USHORT         uiFlags;       /* Transfer attributes */
   USHORT         uiItemCount;   /* Number of items below */
   LPDBTRANSITEM  lpTransItems;  /* Array of items */
} DBTRANSINFO;

typedef DBTRANSINFO * LPDBTRANSINFO;



/*
 *  DBSORTITEM
 *  ----------
 *  The Sort Item Structure
 *
 *  An array of items that, together, indicate the key value to
 *  use while sorting data. The order of the array determines the
 *  order of the sorting.
 */

typedef struct
{
   USHORT uiField;        /* Index into the workarea->fields structure */
   USHORT uiFlags;        /* Sort flags */
} DBSORTITEM;

typedef DBSORTITEM * LPDBSORTITEM;


/* Flags for DBSORTITEM */
#define SF_ASCEND       1
#define SF_CASE         2
#define SF_DESCEND      4
#define SF_NUM         32
#define SF_DOUBLE      64
#define SF_LONG       128



/*
 *  DBSORTINFO
 *  ----------
 *  The Sort Info Structure
 *
 *  Information for a physical sort on the workarea
 */

typedef struct
{
   DBTRANSINFO   dbtri;        /* Destination workarea transfer information */
   LPDBSORTITEM  lpdbsItem;    /* Fields which compose the key values for the sort */
   USHORT        uiItemCount;  /* The number of fields above */
} DBSORTINFO;

typedef DBSORTINFO * LPDBSORTINFO;



/*
 *  DBLOCKINFO
 *  ----------
 *  The Lock Info Structure
 *
 *  Information for a record or file lock
 */

typedef struct
{
   PHB_ITEM itmRecID;
   USHORT   uiMethod;
   BOOL     fResult;
} DBLOCKINFO;

typedef DBLOCKINFO * LPDBLOCKINFO;



/*
 *  FIELD
 *  -----
 *  The Field structure
 *
 *  This is the basic unit of access for a workarea
 */

typedef struct _FIELD
{
   USHORT  uiType;           /* Field type */
   USHORT  uiTypeExtended;   /* Field type - extended */
   USHORT  uiLen;            /* Field length */
   USHORT  uiDec;            /* Decimal length */
   USHORT  uiArea;           /* Area this field resides in */
   void *  sym;              /* Symbol that represents the field */
   struct _FIELD * lpfNext;  /* The next field in the list */
} FIELD;

typedef FIELD * LPFIELD;



/*--------------------* WORKAREA structure *----------------------*/

/*
 *  WORKAREA
 *  --------
 *  The Workarea Structure
 *
 *  Information to administrate the workarea
 */

typedef struct _AREA
{
   struct _RDDFUNCS * lprfsHost; /* Virtual method table for this workarea */
   USHORT uiArea;                /* The number assigned to this workarea */
   void * atomAlias;             /* Pointer to the alias symbol for this workarea */
   USHORT uiFieldExtent;         /* Total number of fields allocated */
   USHORT uiFieldCount;          /* Total number of fields used */
   LPFIELD lpFields;             /* Pointer to an array of fields */
   void * lpFieldExtents;        /* Void ptr for additional field properties */
   PHB_ITEM valResult;           /* All purpose result holder */
   BOOL fTop;                    /* TRUE if "top" */
   BOOL fBottom;                 /* TRUE if "bottom" */
   BOOL fBof;                    /* TRUE if "bof" */
   BOOL fEof;                    /* TRUE if "eof" */
   BOOL fFound;                  /* TRUE if "found" */
   DBSCOPEINFO dbsi;             /* Info regarding last LOCATE */
   DBFILTERINFO dbfi;            /* Filter in effect */
   LPDBORDERCONDINFO lpdbOrdCondInfo;
   LPDBRELINFO lpdbRelations;    /* Parent/Child relationships used */
   USHORT uiParents;             /* Number of parents for this area */
   USHORT heap;
   USHORT heapSize;
   USHORT rddID;
   USHORT uiMaxFieldNameLength;
} AREA;

typedef AREA * LPAREA;

#ifndef AREAP
#define AREAP LPAREA
#endif


/*--------------------* Virtual Method Table *----------------------*/

typedef USHORT ( * DBENTRYP_V    )( AREAP area );
typedef USHORT ( * DBENTRYP_BP   )( AREAP area, BOOL * param );
typedef USHORT ( * DBENTRYP_B    )( AREAP area, BOOL param );
typedef USHORT ( * DBENTRYP_L    )( AREAP area, LONG param );
typedef USHORT ( * DBENTRYP_UL   )( AREAP area, ULONG param );
typedef USHORT ( * DBENTRYP_I    )( AREAP area, PHB_ITEM param );
typedef USHORT ( * DBENTRYP_SI   )( AREAP area, USHORT index, PHB_ITEM param );
typedef USHORT ( * DBENTRYP_VP   )( AREAP area, LPDBOPENINFO param );
typedef USHORT ( * DBENTRYP_VT   )( AREAP area, LPDBTRANSINFO param );
typedef USHORT ( * DBENTRYP_VF   )( AREAP area, LPDBFIELDINFO param );
typedef USHORT ( * DBENTRYP_VL   )( AREAP area, LPDBLOCKINFO param );
typedef USHORT ( * DBENTRYP_VR   )( AREAP area, LPDBRELINFO param );
typedef USHORT ( * DBENTRYP_VS   )( AREAP area, LPDBSORTINFO param );
typedef USHORT ( * DBENTRYP_VFI  )( AREAP area, LPDBFILTERINFO param );
typedef USHORT ( * DBENTRYP_VEI  )( AREAP area, LPDBEVALINFO param );
typedef USHORT ( * DBENTRYP_VLO  )( AREAP area, LPDBSCOPEINFO param );
typedef USHORT ( * DBENTRYP_VOC  )( AREAP area, LPDBORDERCREATEINFO param );
typedef USHORT ( * DBENTRYP_VOI  )( AREAP area, LPDBORDERCONDINFO param );
typedef USHORT ( * DBENTRYP_VOS  )( AREAP area, LPDBORDSCOPEINFO param );
typedef USHORT ( * DBENTRYP_OI   )( AREAP area, LPDBORDERINFO param );
typedef USHORT ( * DBENTRYP_OII  )( AREAP area, USHORT index, LPDBORDERINFO param );
typedef USHORT ( * DBENTRYP_SP   )( AREAP area, USHORT * param );
typedef USHORT ( * DBENTRYP_P    )( AREAP area, BYTE * param );
typedef USHORT ( * DBENTRYP_PP   )( AREAP area, BYTE ** param );
typedef USHORT ( * DBENTRYP_S    )( AREAP area, USHORT param );
typedef USHORT ( * DBENTRYP_LP   )( AREAP area, LONG * param );
typedef USHORT ( * DBENTRYP_ULP  )( AREAP area, ULONG * param );
typedef USHORT ( * DBENTRYP_SVP  )( AREAP area, USHORT index, void * param );
typedef USHORT ( * DBENTRYP_SVPB )( AREAP area, USHORT index, void * param, BOOL p3 );
typedef USHORT ( * DBENTRYP_VSP  )( AREAP area, USHORT action, ULONG lRecord );
typedef USHORT ( * DBENTRYP_SVL  )( AREAP area, USHORT index, ULONG * param );
typedef USHORT ( * DBENTRYP_SSI  )( AREAP area, USHORT p1, USHORT p2, PHB_ITEM p3 );
typedef USHORT ( * DBENTRYP_ISI  )( AREAP area, PHB_ITEM p1, USHORT p2, PHB_ITEM p3 );
typedef USHORT ( * DBENTRYP_BIB  )( AREAP area, BOOL p1, PHB_ITEM p2, BOOL p3 );
typedef USHORT ( * DBENTRYP_VPL  )( AREAP area, void * p1, LONG p2 );
typedef USHORT ( * DBENTRYP_VPLP )( AREAP area, void * p1, LONG * p2 );
typedef USHORT ( * DBENTRYP_LSP  )( AREAP area, LONG p1, USHORT * p2 );

/* this methods DO USE take a Workarea but an RDDNODE */

typedef USHORT ( * DBENTRYP_I0   )( void );
typedef USHORT ( * DBENTRYP_I1   )( PHB_ITEM p1 );
typedef USHORT ( * DBENTRYP_I2   )( PHB_ITEM p1, PHB_ITEM p2 );
/*--------------------* Virtual Method Table *----------------------*/

typedef struct _RDDFUNCS
{
   /* Movement and positioning methods */

   DBENTRYP_BP   bof;               /* Determine logical beginning of file. */
   DBENTRYP_BP   eof;               /* Determine logical end of file. */
   DBENTRYP_BP   found;             /* Determine outcome of the last search operation. */
   DBENTRYP_V    goBottom;          /* Position cursor at the last record. */
   DBENTRYP_UL   go;                /* Position cursor at a specific physical record. */
   DBENTRYP_I    goToId;            /* Position the cursor to a specific, physical identity. */
   DBENTRYP_V    goTop;             /* Position cursor at the first record. */
   DBENTRYP_BIB  seek;              /*  */
   DBENTRYP_L    skip;              /* Reposition cursor relative to current position. */
   DBENTRYP_L    skipFilter;        /*-Reposition cursor respecting any filter setting. */
   DBENTRYP_L    skipRaw;           /* Reposition cursor, regardless of filter. */


   /* Data management */

   DBENTRYP_VF   addField;          /* Add a field to the WorkArea. */
   DBENTRYP_B    append;            /* Append a record to the WorkArea. */
   DBENTRYP_I    createFields;      /*-Add all fields defined in an array to the WorkArea. */
   DBENTRYP_V    deleterec;         /* Delete a record. */
   DBENTRYP_BP   deleted;           /* Determine deleted status for a record. */
   DBENTRYP_SP   fieldCount;        /*-Determine the number of fields in the WorkArea. */
   DBENTRYP_VF   fieldDisplay;      /*  */
   DBENTRYP_SSI  fieldInfo;         /*-Retrieve information about a field. */
   DBENTRYP_SVP  fieldName;         /*-Determine the name associated with a field number. */
   DBENTRYP_V    flush;             /* Write data buffer to the data store. */
   DBENTRYP_PP   getRec;            /*  */
   DBENTRYP_SI   getValue;          /* Obtain the current value of a field. */
   DBENTRYP_SVL  getVarLen;         /* Obtain the length of a field value. */
   DBENTRYP_V    goCold;            /* Perform a write of WorkArea memory to the data store. */
   DBENTRYP_V    goHot;             /* Mark the WorkArea data buffer as hot. */
   DBENTRYP_P    putRec;            /* Replace the current record. */
   DBENTRYP_SI   putValue;          /* Assign a value to a field. */
   DBENTRYP_V    recall;            /* Undelete the current record. */
   DBENTRYP_ULP  reccount;          /* Obtain number of records in WorkArea. */
   DBENTRYP_ISI  recInfo;           /*  */
   DBENTRYP_I    recno;             /* Obtain physical row number at current WorkArea cursor position. */
   DBENTRYP_S    setFieldExtent;    /* Establish the extent of the array of fields for a WorkArea. */


   /* WorkArea/Database management */

   DBENTRYP_P    alias;             /*-Obtain the alias of the WorkArea. */
   DBENTRYP_V    close;             /* Close the table in the WorkArea. */
   DBENTRYP_VP   create;            /* Create a data store in the specified WorkArea. */
   DBENTRYP_SI   info;              /* Retrieve information about the current driver (DBI). */
   DBENTRYP_V    newarea;           /* Clear the WorkArea for use. */
   DBENTRYP_VP   open;              /* Open a data store in the WorkArea. */
   DBENTRYP_V    release;           /*-Release all references to a WorkArea. */
   DBENTRYP_SP   structSize;        /* Retrieve the size of the WorkArea structure. */
   DBENTRYP_P    sysName;           /* Obtain the name of replaceable database driver (RDD) subsystem. */
   DBENTRYP_VEI  dbEval;            /*-Evaluate code block for each record in WorkArea. */
   DBENTRYP_V    pack;              /* Remove records marked for deletion from a database. */
   DBENTRYP_LSP  packRec;           /*  */
   DBENTRYP_VS   sort;              /* Physically reorder a database. */
   DBENTRYP_VT   trans;             /* Copy one or more records from one WorkArea to another. */
   DBENTRYP_VT   transRec;          /* Copy a record to another WorkArea. */
   DBENTRYP_V    zap;               /* Physically remove all records from data store. */


   /* Relational Methods */

   DBENTRYP_VR   childEnd;          /* Report end of relation. */
   DBENTRYP_VR   childStart;        /* Report initialization of a relation. */
   DBENTRYP_VR   childSync;         /* Post a pending relational movement. */
   DBENTRYP_V    syncChildren;      /*-Force relational movement in child WorkAreas. */
   DBENTRYP_V    clearRel;          /* Clear all relations in the specified WorkArea. */
   DBENTRYP_V    forceRel;          /* Force relational seeks in the specified WorkArea. */
   DBENTRYP_SVP  relArea;           /*-Obtain the workarea number of the specified relation. */
   DBENTRYP_VR   relEval;           /*-Evaluate a block against the relation in specified WorkArea. */
   DBENTRYP_SVP  relText;           /*-Obtain the character expression of the specified relation. */
   DBENTRYP_VR   setRel;            /*-Set a relation in the parent file. */


   /* Order Management */

   DBENTRYP_OI   orderListAdd;      /*  */
   DBENTRYP_V    orderListClear;    /*  */
   DBENTRYP_VP   orderListDelete;   /*  */
   DBENTRYP_OI   orderListFocus;    /*  */
   DBENTRYP_V    orderListRebuild;  /*  */
   DBENTRYP_VOI  orderCondition;    /*  */
   DBENTRYP_VOC  orderCreate;       /*  */
   DBENTRYP_OI   orderDestroy;      /*  */
   DBENTRYP_OII  orderInfo;         /*-Retrieve information about the current order that SELF could not. */


   /* Filters and Scope Settings */

   DBENTRYP_V    clearFilter;       /*-Clear the active filter expression. */
   DBENTRYP_V    clearLocate;       /*-Clear the active locate expression. */
   DBENTRYP_V    clearScope;        /*  */
   DBENTRYP_VPLP countScope;        /*  */
   DBENTRYP_I    filterText;        /*-Return filter condition of the specified WorkArea. */
   DBENTRYP_SI   scopeInfo;         /*  */
   DBENTRYP_VFI  setFilter;         /* Set the filter condition for the specified WorkArea. */
   DBENTRYP_VLO  setLocate;         /*-Set the locate scope for the specified WorkArea. */
   DBENTRYP_VOS  setScope;          /*  */
   DBENTRYP_VPL  skipScope;         /*  */


   /* Miscellaneous */

   DBENTRYP_P    compile;           /*-Compile a character expression. */
   DBENTRYP_I    error;             /*-Raise a runtime error. */
   DBENTRYP_I    evalBlock;         /*-Evaluate a code block. */


   /* Network operations */

   DBENTRYP_VSP  rawlock;           /* Perform a lowlevel network lock in the specified WorkArea. */
   DBENTRYP_VL   lock;              /* Perform a network lock in the specified WorkArea. */
   DBENTRYP_UL   unlock;            /* Release network locks in the specified WorkArea. */


   /* Memofile functions */

   DBENTRYP_V    closeMemFile;      /* Close a memo file in the WorkArea. */
   DBENTRYP_VP   createMemFile;     /* Create a memo file in the WorkArea. */
   DBENTRYP_SVPB getValueFile;      /*  */
   DBENTRYP_VP   openMemFile;       /* Open a memo file in the specified WorkArea. */
   DBENTRYP_SVP  putValueFile;      /*  */


   /* Database file header handling */

   DBENTRYP_V    readDBHeader;      /* Read the database file header record in the WorkArea. */
   DBENTRYP_V    writeDBHeader;     /* Write the database file header record in the WorkArea. */


   /* non WorkArea functions       */
   DBENTRYP_I0   exit;              /*  */
   DBENTRYP_I1   drop;              /* remove table */
   DBENTRYP_I2   exists;            /* check if table exist */

   /* Special and reserved methods */

   DBENTRYP_SVP  whoCares;          /*  */

} RDDFUNCS;

typedef RDDFUNCS * PRDDFUNCS;

#define RDDFUNCSCOUNT   ( sizeof( RDDFUNCS ) / sizeof( DBENTRYP_V ) )

/* RDD Node structure              */
typedef struct _RDDNODE
{
   char szName[ HARBOUR_MAX_RDD_DRIVERNAME_LENGTH + 1 ]; /* Name of RDD */
   USHORT uiType;                                        /* Type of RDD */
   RDDFUNCS pTable;                                      /* Table of functions */
   RDDFUNCS pSuperTable;                                 /* Table of super functions */
   USHORT uiAreaSize;                                    /* Size of the WorkArea */
   struct _RDDNODE * pNext;                              /* Next RDD in the list */
} RDDNODE;

typedef RDDNODE * LPRDDNODE;


/*--------------------* SELF Methods *------------------------*/

/* Movement and positioning methods */

#define SELF_BOF(w, sp)                 ((*(w)->lprfsHost->bof)(w, sp))
#define SELF_EOF(w, sp)                 ((*(w)->lprfsHost->eof)(w, sp))
#define SELF_FOUND(w, sp)               ((*(w)->lprfsHost->found)(w, sp))
#define SELF_GOTO(w, l)                 ((*(w)->lprfsHost->go)(w, l))
#define SELF_GOTOID(w, sp)              ((*(w)->lprfsHost->goToId)(w, sp))
#define SELF_GOBOTTOM(w)                ((*(w)->lprfsHost->goBottom)(w))
#define SELF_GOTOP(w)                   ((*(w)->lprfsHost->goTop)(w))
#define SELF_SEEK(w, i1, v, i2)         ((*(w)->lprfsHost->seek)(w, i1, v, i2))
#define SELF_SKIP(w, l)                 ((*(w)->lprfsHost->skip)(w, l))
#define SELF_SKIPFILTER(w, l)           ((*(w)->lprfsHost->skipFilter)(w, l))
#define SELF_SKIPRAW(w, l)              ((*(w)->lprfsHost->skipRaw)(w, l))


/* Data management */

#define SELF_ADDFIELD(w, ip)            ((*(w)->lprfsHost->addField)(w, ip))
#define SELF_APPEND(w,l)                ((*(w)->lprfsHost->append)(w,l))
#define SELF_CREATEFIELDS(w, v)         ((*(w)->lprfsHost->createFields)(w, v))
#define SELF_DELETE(w)                  ((*(w)->lprfsHost->deleterec)(w))
#define SELF_DELETED(w, sp)             ((*(w)->lprfsHost->deleted)(w, sp))
#define SELF_FIELDCOUNT(w, sp)          ((*(w)->lprfsHost->fieldCount)(w, sp))
#define SELF_FIELDDISPLAY(w, sp)        ((*(w)->lprfsHost->fieldDisplay)(w, sp))
#define SELF_FIELDINFO(w,s1,s2,v)       ((*(w)->lprfsHost->fieldInfo)(w,s1,s2,v))
#define SELF_FIELDNAME(w, i, bp)        ((*(w)->lprfsHost->fieldName)(w, i, bp))
#define SELF_FLUSH(w)                   ((*(w)->lprfsHost->flush)(w))
#define SELF_GETREC(w, bpp)             ((*(w)->lprfsHost->getRec)(w, bpp))
#define SELF_GETVALUE(w, i, v)          ((*(w)->lprfsHost->getValue)(w, i, v))
#define SELF_GETVARLEN(w, i, lp)        ((*(w)->lprfsHost->getVarLen)(w, i, lp))
#define SELF_GOCOLD(w)                  ((*(w)->lprfsHost->goCold)(w))
#define SELF_GOHOT(w)                   ((*(w)->lprfsHost->goHot)(w))
#define SELF_PUTVALUE(w, i, v)          ((*(w)->lprfsHost->putValue)(w, i, v))
#define SELF_PUTREC(w, bp)              ((*(w)->lprfsHost->putRec)(w, bp))
#define SELF_RECALL(w)                  ((*(w)->lprfsHost->recall)(w))
#define SELF_RECCOUNT(w, sp)            ((*(w)->lprfsHost->reccount)(w, sp))
#define SELF_RECINFO(w,v1,i,v2)         ((*(w)->lprfsHost->recInfo)(w,v1,i,v2))
#define SELF_RECNO(w, i)                ((*(w)->lprfsHost->recno)(w, i))
#define SELF_SETFIELDEXTENT(w, s)       ((*(w)->lprfsHost->setFieldExtent)(w, s))


/* WorkArea/Database management */

#define SELF_ALIAS(w, bp)               ((*(w)->lprfsHost->alias)(w, bp))
#define SELF_CLOSE(w)                   ((*(w)->lprfsHost->close)(w))
#define SELF_CREATE(w, ip)              ((*(w)->lprfsHost->create)(w, ip))
#define SELF_INFO(w, i, g)              ((*(w)->lprfsHost->info)(w, i, g))
#define SELF_NEW(w)                     ((*(w)->lprfsHost->newarea)(w))
#define SELF_OPEN(w, ip)                ((*(w)->lprfsHost->open)(w, ip))
#define SELF_RELEASE(w)                 ((*(w)->lprfsHost->release)(w))
#define SELF_STRUCTSIZE(w, sp)          ((*(w)->lprfsHost->structSize)(w,sp))
#define SELF_SYSNAME(w, bp)             ((*(w)->lprfsHost->sysName)(w, bp))
#define SELF_DBEVAL(w, ip)              ((*(w)->lprfsHost->dbEval)(w, ip))
#define SELF_PACK(w)                    ((*(w)->lprfsHost->pack)(w))
#define SELF_PACKREC(w, l, sp)          ((*(w)->lprfsHost->packRec)(w, l, sp))
#define SELF_SORT(w, ip)                ((*(w)->lprfsHost->sort)(w, ip))
#define SELF_TRANS(w, ip)               ((*(w)->lprfsHost->trans)(w, ip))
#define SELF_TRANSREC(w, ip)            ((*(w)->lprfsHost->transRec)(w, ip))
#define SELF_ZAP(w)                     ((*(w)->lprfsHost->zap)(w))


/* Relational Methods */

#define SELF_CHILDEND(w, ip)            ((*(w)->lprfsHost->childEnd)(w, ip))
#define SELF_CHILDSTART(w, ip)          ((*(w)->lprfsHost->childStart)(w, ip))
#define SELF_CHILDSYNC(w, ip)           ((*(w)->lprfsHost->childSync)(w, ip))
#define SELF_SYNCCHILDREN(w)            ((*(w)->lprfsHost->syncChildren)(w))
#define SELF_CLEARREL(w)                ((*(w)->lprfsHost->clearRel)(w))
#define SELF_FORCEREL(w)                ((*(w)->lprfsHost->forceRel)(w))
#define SELF_RELAREA(w, s, sp)          ((*(w)->lprfsHost->relArea)(w, s, sp))
#define SELF_RELEVAL(w, ip)             ((*(w)->lprfsHost->relEval)(w, ip))
#define SELF_RELTEXT(w, s, bp)          ((*(w)->lprfsHost->relText)(w, s, bp))
#define SELF_SETREL(w, ip)              ((*(w)->lprfsHost->setRel)(w, ip))


/* Order Management */

#define SELF_ORDLSTADD(w, lp)           ((*(w)->lprfsHost->orderListAdd)(w, lp))
#define SELF_ORDLSTDELETE(w, lp)        ((*(w)->lprfsHost->orderListDelete)(w, lp))
#define SELF_ORDLSTFOCUS(w, lp)         ((*(w)->lprfsHost->orderListFocus)(w,lp))
#define SELF_ORDLSTREBUILD(w)           ((*(w)->lprfsHost->orderListRebuild)(w))
#define SELF_ORDLSTCLEAR(w)             ((*(w)->lprfsHost->orderListClear)(w))
#define SELF_ORDSETCOND(w, ip)          ((*(w)->lprfsHost->orderCondition)(w, ip))
#define SELF_ORDCREATE(w, ip)           ((*(w)->lprfsHost->orderCreate)(w, ip))
#define SELF_ORDDESTROY(w, p)           ((*(w)->lprfsHost->orderDestroy)(w, p))
#define SELF_ORDINFO(w, i, p)           ((*(w)->lprfsHost->orderInfo)(w, i, p))
#define SELF_ORDEXPR(w, p)              ((*(w)->lprfsHost->orderInfo)(w, DBOI_EXPRESSION, p))
#define SELF_ORDCOND(w, p)              ((*(w)->lprfsHost->orderInfo)(w, DBOI_CONDITION,  p))
#define SELF_ORDRECNO(w, p)             ((*(w)->lprfsHost->orderInfo)(w, DBOI_RECNO,      p))
#define SELF_ORDPOS(w, p)               ((*(w)->lprfsHost->orderInfo)(w, DBOI_POSITION,   p))
#define SELF_ORDNUMBER(w, p)            ((*(w)->lprfsHost->orderInfo)(w, DBOI_NUMBER,     p))
#define SELF_ORDNAME(w, p)              ((*(w)->lprfsHost->orderInfo)(w, DBOI_NAME,       p))
#define SELF_ORDBAGNAME(w, p)           ((*(w)->lprfsHost->orderInfo)(w, DBOI_BAGNAME,    p))
#define SELF_ORDBAGEXT(w,  p)           ((*(w)->lprfsHost->orderInfo)(w, DBOI_BAGEXT,     p))


/* Filters and Scope Settings */

#define SELF_CLEARFILTER(w)             ((*(w)->lprfsHost->clearFilter)(w))
#define SELF_CLEARLOCATE(w)             ((*(w)->lprfsHost->clearLocate)(w))
#define SELF_CLEARSCOPE(w)              ((*(w)->lprfsHost->clearScope)(w))
#define SELF_COUNTSCOPE(w,ip,lp)        ((*(w)->lprfsHost->countScope)(w,ip,lp))
#define SELF_FILTERTEXT(w, bp)          ((*(w)->lprfsHost->filterText)(w, bp))
#define SELF_SCOPEINFO(w,i,v)           ((*(w)->lprfsHost->scopeInfo)(w,i,v))
#define SELF_SETFILTER(w, ip)           ((*(w)->lprfsHost->setFilter)(w, ip))
#define SELF_SETLOCATE(w, ip)           ((*(w)->lprfsHost->setLocate)(w, ip))
#define SELF_SETSCOPE(w, ip)            ((*(w)->lprfsHost->setScope)(w, ip))
#define SELF_SKIPSCOPE(w, bp, l)        ((*(w)->lprfsHost->skipScope)(w, bp, l))


/* Miscellaneous */

#define SELF_COMPILE(w, bp)             ((*(w)->lprfsHost->compile)(w, bp))
#define SELF_ERROR(w, ip)               ((*(w)->lprfsHost->error)(w, ip))
#define SELF_EVALBLOCK(w, v)            ((*(w)->lprfsHost->evalBlock)(w, v))


/* Network operations */

#define SELF_GETLOCKS(w, g)             ((*(w)->lprfsHost->info)(w, DBI_GETLOCKARRAY, g))
#define SELF_RAWLOCK(w, i, l)           ((*(w)->lprfsHost->rawlock)(w, i, l))
#define SELF_LOCK(w, sp)                ((*(w)->lprfsHost->lock)(w, sp))
#define SELF_UNLOCK(w, l)               ((*(w)->lprfsHost->unlock)(w, l))


/* Memofile functions */

#define SELF_CLOSEMEMFILE(w)            ((*(w)->lprfsHost->closeMemFile)(w))
#define SELF_CREATEMEMFILE(w,bp)        ((*(w)->lprfsHost->createMemFile)(w,bp))
#define SELF_GETVALUEFILE(w,i,bp,b)     ((*(w)->lprfsHost->getValueFile)(w,i,bp,b))
#define SELF_OPENMEMFILE(w,bp)          ((*(w)->lprfsHost->openMemFile)(w,bp))
#define SELF_PUTVALUEFILE(w,i,bp)       ((*(w)->lprfsHost->putValueFile)(w,i,bp))


/* Database file header handling */

#define SELF_READDBHEADER(w)            ((*(w)->lprfsHost->readDBHeader)(w))
#define SELF_WRITEDBHEADER(w)           ((*(w)->lprfsHost->writeDBHeader)(w))


/* Info operations */

#define SELF_RECSIZE(w, lp)             ((*(w)->lprfsHost->info)(w, DBI_GETRECSIZE, lp))
#define SELF_HEADERSIZE(w, fp)          ((*(w)->lprfsHost->info)(w, DBI_GETHEADERSIZE, fp))
#define SELF_LUPDATE(w, fp)             ((*(w)->lprfsHost->info)(w, DBI_LASTUPDATE, fp ))
#define SELF_SETDELIM(w, fp)            ((*(w)->lprfsHost->info)(w, DBI_SETDELIMITER, fp))
#define SELF_GETDELIM(w, fp)            ((*(w)->lprfsHost->info)(w, DBI_GETDELIMITER, fp))
#define SELF_TABLEEXT(w, fp)            ((*(w)->lprfsHost->info)(w, DBI_TABLEEXT, fp))


/* non WorkArea functions */
#define SELF_EXIT(r)                    ((*(r)->pTable.exit)())
#define SELF_DROP(r, i)                 ((*(r)->pTable.drop)(i))
#define SELF_EXISTS(r, it, ii)          ((*(r)->pTable.exists)(it,ii))


/*--------------------* SUPER Methods *------------------------*/


/* Movement and positioning methods */

#define SUPER_BOF(w, sp)                ((*(SUPERTABLE)->bof)(w, sp))
#define SUPER_EOF(w, sp)                ((*(SUPERTABLE)->eof)(w, sp))
#define SUPER_FOUND(w, sp)              ((*(SUPERTABLE)->found)(w, sp))
#define SUPER_GOTO(w, l)                ((*(SUPERTABLE)->go)(w, l))
#define SUPER_GOTOID(w, sp)             ((*(SUPERTABLE)->goToId)(w, sp))
#define SUPER_GOBOTTOM(w)               ((*(SUPERTABLE)->goBottom)(w))
#define SUPER_GOTOP(w)                  ((*(SUPERTABLE)->goTop)(w))
#define SUPER_SEEK(w, i1, v, i2)        ((*(SUPERTABLE)->seek)(w, i1, v, i2))
#define SUPER_SKIP(w, l)                ((*(SUPERTABLE)->skip)(w, l))
#define SUPER_SKIPFILTER(w, l)          ((*(SUPERTABLE)->skipFilter)(w, l))
#define SUPER_SKIPRAW(w, l)             ((*(SUPERTABLE)->skipRaw)(w, l))


/* Data management */

#define SUPER_ADDFIELD(w, ip)           ((*(SUPERTABLE)->addField)(w, ip))
#define SUPER_APPEND(w,l)               ((*(SUPERTABLE)->append)(w,l))
#define SUPER_CREATEFIELDS(w, v)        ((*(SUPERTABLE)->createFields)(w, v))
#define SUPER_DELETE(w)                 ((*(SUPERTABLE)->deleterec)(w))
#define SUPER_DELETED(w, sp)            ((*(SUPERTABLE)->deleted)(w, sp))
#define SUPER_FIELDCOUNT(w, sp)         ((*(SUPERTABLE)->fieldCount)(w, sp))
#define SUPER_FIELDDISPLAY(w, sp)       ((*(SUPERTABLE)->fieldDisplay)(w, sp))
#define SUPER_FIELDINFO(w,s1,s2,v)      ((*(SUPERTABLE)->fieldInfo)(w,s1,s2,v))
#define SUPER_FIELDNAME(w, i, bp)       ((*(SUPERTABLE)->fieldName)(w, i, bp))
#define SUPER_FLUSH(w)                  ((*(SUPERTABLE)->flush)(w))
#define SUPER_GETREC(w, bpp)            ((*(SUPERTABLE)->getRec)(w, bpp))
#define SUPER_GETVALUE(w, i, v)         ((*(SUPERTABLE)->getValue)(w, i, v))
#define SUPER_GETVARLEN(w, i, lp)       ((*(SUPERTABLE)->getVarLen)(w, i, lp))
#define SUPER_GOCOLD(w)                 ((*(SUPERTABLE)->goCold)(w))
#define SUPER_GOHOT(w)                  ((*(SUPERTABLE)->goHot)(w))
#define SUPER_PUTVALUE(w, i, v)         ((*(SUPERTABLE)->putValue)(w, i, v))
#define SUPER_PUTREC(w, bp)             ((*(SUPERTABLE)->putRec)(w, bp))
#define SUPER_RECALL(w)                 ((*(SUPERTABLE)->recall)(w))
#define SUPER_RECCOUNT(w, sp)           ((*(SUPERTABLE)->reccount)(w, sp))
#define SUPER_RECINFO(w,v1,i,v2)        ((*(SUPERTABLE)->recInfo)(w,v1,i,v2))
#define SUPER_RECNO(w, sp)              ((*(SUPERTABLE)->recno)(w, sp))
#define SUPER_SETFIELDEXTENT(w, s)      ((*(SUPERTABLE)->setFieldExtent)(w, s))


/* WorkArea/Database management */

#define SUPER_ALIAS(w, bp)              ((*(SUPERTABLE)->alias)(w, bp))
#define SUPER_CLOSE(w)                  ((*(SUPERTABLE)->close)(w))
#define SUPER_CREATE(w, ip)             ((*(SUPERTABLE)->create)(w, ip))
#define SUPER_INFO(w, i, g)             ((*(SUPERTABLE)->info)(w, i, g))
#define SUPER_NEW(w)                    ((*(SUPERTABLE)->newarea)(w))
#define SUPER_OPEN(w, ip)               ((*(SUPERTABLE)->open)(w, ip))
#define SUPER_RELEASE(w)                ((*(SUPERTABLE)->release)(w))
#define SUPER_STRUCTSIZE(w, sp)         ((*(SUPERTABLE)->structSize)(w, sp))
#define SUPER_SYSNAME(w, bp)            ((*(SUPERTABLE)->sysName)(w, bp))
#define SUPER_DBEVAL(w, ip)             ((*(SUPERTABLE)->dbEval)(w, ip))
#define SUPER_PACK(w)                   ((*(SUPERTABLE)->pack)(w))
#define SUPER_PACKREC(w, l, sp)         ((*(SUPERTABLE)->packRec)(w, l, sp))
#define SUPER_SORT(w, ip)               ((*(SUPERTABLE)->sort)(w, ip))
#define SUPER_TRANS(w, ip)              ((*(SUPERTABLE)->trans)(w, ip))
#define SUPER_TRANSREC(w, ip)           ((*(SUPERTABLE)->transRec)(w, ip))
#define SUPER_ZAP(w)                    ((*(SUPERTABLE)->zap)(w))


/* Relational Methods */

#define SUPER_CHILDEND(w, ip)           ((*(SUPERTABLE)->childEnd)(w, ip))
#define SUPER_CHILDSTART(w, ip)         ((*(SUPERTABLE)->childStart)(w, ip))
#define SUPER_CHILDSYNC(w, ip)          ((*(SUPERTABLE)->childSync)(w, ip))
#define SUPER_SYNCCHILDREN(w)           ((*(SUPERTABLE)->syncChildren)(w))
#define SUPER_CLEARREL(w)               ((*(SUPERTABLE)->clearRel)(w))
#define SUPER_FORCEREL(w)               ((*(SUPERTABLE)->forceRel)(w))
#define SUPER_RELAREA(w, s, sp)         ((*(SUPERTABLE)->relArea)(w, s, sp))
#define SUPER_RELEVAL(w, ip)            ((*(SUPERTABLE)->relEval)(w, ip))
#define SUPER_RELTEXT(w, s, bp)         ((*(SUPERTABLE)->relText)(w, s, bp))
#define SUPER_SETREL(w, ip)             ((*(SUPERTABLE)->setRel)(w, ip))


/* Order Management */

#define SUPER_ORDLSTADD(w, lp)          ((*(SUPERTABLE)->orderListAdd)(w, lp))
#define SUPER_ORDLSTDELETE(w, lp)       ((*(SUPERTABLE)->orderListDelete)(w, lp))
#define SUPER_ORDLSTFOCUS(w, lp)        ((*(SUPERTABLE)->orderListFocus)(w, lp))
#define SUPER_ORDLSTREBUILD(w)          ((*(SUPERTABLE)->orderListRebuild)(w))
#define SUPER_ORDLSTCLEAR(w)            ((*(SUPERTABLE)->orderListClear)(w))
#define SUPER_ORDSETCOND(w,ip)          ((*(SUPERTABLE)->orderCondition)(w, ip))
#define SUPER_ORDCREATE(w, ip)          ((*(SUPERTABLE)->orderCreate)(w, ip))
#define SUPER_ORDDELETE(w, ip)          ((*(SUPERTABLE)->orderDelete)(w, ip))
#define SUPER_ORDINFO(w, i, p)          ((*(SUPERTABLE)->orderInfo)(w, i, p))
#define SUPER_ORDEXPR(w, p)             ((*(SUPERTABLE)->orderInfo)(w, DBOI_EXPRESSION, p))
#define SUPER_ORDCOND(w, p)             ((*(SUPERTABLE)->orderInfo)(w, DBOI_CONDITION,  p))
#define SUPER_ORDRECNO(w, p)            ((*(SUPERTABLE)->orderInfo)(w, DBOI_RECNO,      p))
#define SUPER_ORDPOS(w, p)              ((*(SUPERTABLE)->orderInfo)(w, DBOI_POSITION,   p))
#define SUPER_ORDNUMBER(w, p)           ((*(SUPERTABLE)->orderInfo)(w, DBOI_NUMBER,     p))
#define SUPER_ORDNAME(w, p)             ((*(SUPERTABLE)->orderInfo)(w, DBOI_NAME,       p))
#define SUPER_ORDBAGNAME(w, p)          ((*(SUPERTABLE)->orderInfo)(w, DBOI_BAGNAME,    p))
#define SUPER_ORDBAGEXT(w,  p)          ((*(SUPERTABLE)->orderInfo)(w, DBOI_BAGEXT,     p))


/* Filters and Scope Settings */

#define SUPER_CLEARFILTER(w)            ((*(SUPERTABLE)->clearFilter)(w))
#define SUPER_CLEARLOCATE(w)            ((*(SUPERTABLE)->clearLocate)(w))
#define SUPER_CLEARSCOPE(w)             ((*(SUPERTABLE)->clearScope)(w))
#define SUPER_COUNTSCOPE(w,ip,lp)       ((*(SUPERTABLE)->countScope)(w,ip,lp))
#define SUPER_FILTERTEXT(w, bp)         ((*(SUPERTABLE)->filterText)(w, bp))
#define SUPER_SCOPEINFO(w,i,v)          ((*(SUPERTABLE)->scopeInfo)(w,i,v))
#define SUPER_SETFILTER(w, ip)          ((*(SUPERTABLE)->setFilter)(w, ip))
#define SUPER_SETLOCATE(w, ip)          ((*(SUPERTABLE)->setLocate)(w, ip))
#define SUPER_SETSCOPE(w, ip)           ((*(SUPERTABLE)->setScope)(w, ip))
#define SUPER_SKIPSCOPE(w, bp, l)       ((*(SUPERTABLE)->skipScope)(w, bp, l))


/* Miscellaneous */

#define SUPER_COMPILE(w, bp)            ((*(SUPERTABLE)->compile)(w, bp))
#define SUPER_ERROR(w, ip)              ((*(SUPERTABLE)->error)(w, ip))
#define SUPER_EVALBLOCK(w, v)           ((*(SUPERTABLE)->evalBlock)(w, v))


/* Network operations */

#define SUPER_GETLOCKS(w, g)            ((*(SUPERTABLE)->info)(w, DBI_GETLOCKARRAY, g))
#define SUPER_RAWLOCK(w, i, l)          ((*(SUPERTABLE)->rawlock)(w, i, l))
#define SUPER_LOCK(w, sp)               ((*(SUPERTABLE)->lock)(w, sp))
#define SUPER_UNLOCK(w,l)               ((*(SUPERTABLE)->unlock)(w,l))


/* Memofile functions */

#define SUPER_CLOSEMEMFILE(w)           ((*(SUPERTABLE)->closeMemFile)(w))
#define SUPER_CREATEMEMFILE(w,bp)       ((*(SUPERTABLE)->createMemFile)(w,bp))
#define SUPER_GETVALUEFILE(w,i,bp,b)    ((*(SUPERTABLE)->getValueFile)(w,i,bp,b))
#define SUPER_OPENMEMFILE(w,bp)         ((*(SUPERTABLE)->openMemFile)(w,bp))
#define SUPER_PUTVALUEFILE(w,i,bp)      ((*(SUPERTABLE)->putValueFile)(w,i,bp))


/* Database file header handling */

#define SUPER_READDBHEADER(w)           ((*(SUPERTABLE)->readDBHeader)(w))
#define SUPER_WRITEDBHEADER(w)          ((*(SUPERTABLE)->writeDBHeader)(w))


/* Info operations */

#define SUPER_RECSIZE(w, lp)            ((*(SUPERTABLE)->info)(w, DBI_GETRECSIZE, lp))
#define SUPER_HEADERSIZE(w, fp)         ((*(SUPERTABLE)->info)(w, DBI_GETHEADERSIZE, fp))
#define SUPER_LUPDATE(w, fp)            ((*(SUPERTABLE)->info)(w, DBI_LASTUPDATE, fp ))
#define SUPER_SETDELIM(w, fp)           ((*(SUPERTABLE)->info)(w, DBI_SETDELIMITER, fp))
#define SUPER_GETDELIM(w, fp)           ((*(SUPERTABLE)->info)(w, DBI_GETDELIMITER, fp))
#define SUPER_TABLEEXT(w, fp)           ((*(SUPERTABLE)->info)(w, DBI_TABLEEXT, fp))

/* non WorkArea functions */
#define SUPER_EXIT()                    ((*(SUPERTABLE)->exit)())
#define SUPER_DROP(i)                   ((*(SUPERTABLE)->drop)(i))
#define SUPER_EXISTS(it, ii)            ((*(SUPERTABLE)->exists)(it, ii))

/*
 *  PROTOTYPES
 *  ----------
 */
extern ERRCODE hb_rddInherit( PRDDFUNCS pTable, PRDDFUNCS pSubTable, PRDDFUNCS pSuperTable, BYTE * szDrvName );
extern ERRCODE hb_rddDisinherit( BYTE * drvName );
extern USHORT  hb_rddExtendType( USHORT fieldType );
extern USHORT  hb_rddFieldType( USHORT extendType );

typedef short (* WACALLBACK )( AREA *, int );
extern ERRCODE hb_rddIterateWorkAreas ( WACALLBACK pCallBack, int data );
USHORT hb_rddFieldIndex( AREAP pArea, char * szName);
ERRCODE hb_rddGetTempAlias( char * szAliasTmp );

HB_EXTERN_END

#endif /* HB_APIRDD_H_ */