FairCom ISAM for C

DeleteRFile

Delete ISAM file and associated indexes.

Short Name

DELRFIL()

Type

ISAM function

Declaration

COUNT DeleteRFile(FILNO datno)

Description

DeleteRFile() deletes the file and indexes referenced by the ISAM data file with file number datno, if and only if the file and indexes have been opened in exclusive mode.

Return

Value	Symbolic Constant	Explanation
0	NO_ERROR	Successful file deletion.
55	DLTF_ERR	File could not be deleted. Does any process have the file open?
56	DLTP_ERR	File is not opened in the ctEXCLUSIVE mode. Delete is not performed.

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

Example

FILNO datno = 5;

TEXT filnam[15];

printf("\nEnter file name to delete:")

scanf("%14s", filnam);

if (OpenFileWithResource(datno, filnam, ctEXCLUSIVE))

printf("\nCould not open data file or index, error = %d,

file = %d",isam_err,isam_fil);

else if (DeleteRFile(datno))

printf("\nCould not delete data file or index, error = %d,

file = %d",isam_err,isam_fil);

Limitations

DeleteRFile() calls the Low-Level DeleteCtFile() function, which first closes the file before deletion.

In a non-server model, this permits another process to have a small window of opportunity to gain control of the file in which case the delete will fail and result in an error DLTF_ERR (55).