OT_GETDK

Intercept c-tree Plus data record just after read from disk

ctCONV COUNT ctDECL OT_GETDK(pSchema)

pCTREE_SCHEMA pSchema;

 /* Pointer to current c-tree Plus ODBC schema info */

This function is called just after a successful read from disk of a c-tree Plus record. It provides a means for you to intercept the c-tree Plus record just after the read, and before it is processed by the c-tree Driver. This function should only be implemented by advanced c-tree Plus users with caution. See the CTREE_SCHEMA definition below for the information provided to you by pSchema.

typedef struct {

pDATOBJ pDatObj;    /* Pointer to DODA                                        */

pVOID   pBuffer;    /* Pointer to record buffer going to disk                 */

VRLEN   bufferSize; /* Total size of record buffer-amount allocated           */

VRLEN   dodaSize;   /* size of the doda                                       */

UINT    align;      /* alignment adjustment factor                            */

NINT    delimiter;  /* field delimiter character from file's header           */

NINT    padding;    /* field padding character from file's header             */

UINT    nfields;    /* number of fields in record (in DODA)                   */

UCOUNT  vlength;    /* byte offset of variable record portion- 0=fixed length */

VRLEN   UsedbufferSize;

                    /* Used size of record buffer for variable length records */

NINT    lastfield;  /* last field updated for current record                  */

pVOID   pUsrData;   /* User data pointer                                      */

} CTREE_SCHEMA, ctMEM *pCTREE_SCHEMA,

  ctMEM * ctMEM *ppCTREE_SCHEMA;