FairCom ISAM for C

ctGetCurrentSequenceValue

Declaration

NINT ctGetCurrentSequenceValue(LONG seqhnd, pLONG8 pcurval, pNINT punkval);

Description

Reads the current value for the specified sequence. The current value of a sequence can be one of the following:

The initial value specified when the sequence was created.
The last value set with the ctSetCurrentSequenceValue(), ctGetNextSequenceValue(), or ctSetSequenceAttrs() functions.
The unknown value if the sequence has exceeded its minimum or maximum and is not cycling.

Sequence values are stored in the database in which they are defined, and persist between each call to the ctSetCurrentSequenceValue() or ctGetNextSequenceValue() function.

Return Values

Value	Symbolic Constant	Explanation
0	NO_ERROR	Successfully created the sequence.
900	SEQDUP_ERR	A sequence having the specified name already exists.
903	SEQTYP_ERR	The specified sequence type contains an invalid combination of sequence type options.
904	SEQINI_ERR	The initial value specified for the sequence is out of range.
905	SEQCUR_ERR	The current value specified for the sequence is out of range.
906	SEQLIM_ERR	The limit value specified for the sequence is out of range.
907	SEQINC_ERR	The increment value specified for the sequence is out of range.
901	SEQNAM_ERR	An invalid sequence name was specified: the name is NULL, empty, or too long.

See FairCom DB Error Codes for a complete listing of valid error values.

Example

ctSEQATTR seqattr;

NINT rc;

** Create an incrementing sequence that starts with 1, increments by 3, and

** terminates with 100.

strcpy(seqattr.seqnam, "MyFirstSequence");

seqattr.seqini = 1;

seqattr.seqinc = 3;

seqattr.seqlim = 100;

seqattr.seqtyp = ctSEQINC | ctSEQTRM | ctSEQLIM;

if ((rc = ctCreateSequence(&seqattr))) {

printf("Error: Failed to create the sequence: %d\n", rc);

} else {

printf("Successfully created the sequence.\n");

}