ubldprim

ubldprim builds the concatenated primary key for a record.

void ubldprim(uc, key)

struct uctrl *uc;

unsigned char *key;

Parameters

uc—address of the current control block.
key—address of the buffer in which the primary key is placed.

Return Values

Not applicable.

Description

ubldprim builds the concatenated primary key for a record. The result is stored in the user supplied key buffer.

When ubldprim is called, the values of the primary key fields must be available in the general I/O buffer. With a field-level connector, the actual length of the primary key fields must be available in the uflen elements in the field list.

This example returns records that are found during the Select connector request. When the mode of request is 0 or 3, the ubldprim service function is used to construct the primary key needed to call the uaddrec service function.

The example creates the DrvAdminType data type. The DrvAdminType data type holds the PRA in its PRA field and the primary key in its PKBuffer field. Such a structure would usually be stored in the connector workspace (uctrl->udrv).

ReturnRecordsFoundInSelect ( struct uctrl *ControlBlock,
DrvAdminType *ConnectorAdministration )
{
unsigned char Dummy;
if ( ControlBlock->umode == 1 ||
ControlBlock->umode == 2 )
{
/* Ready: modes 1 and 2 do not require hit. */
}
else
{
if ( ControlBlock->umode == 4 )
{
usumhit ( ControlBlock );
}
else
{
/* For modes 0 and 3 */
ubldprim ( ControlBlock, DrvAdministration->PKBuffer );
uaddrec ( ControlBlock,
DrvAdministration->PRA,
ControlBlock->uralen,
DrvAdministration->PKBuffer,
ControlBlock->uprimlen,
(unsigned char*)Dummy, 0 );
}
}
}