c-treeDB API API for C

ctdbAttachTable

Attaches a FairCom DB ISAM datno object to a c-treeDB API table handle.

DECLARATION

CTDBRET ctdbAttachTable(CTHANDLE Handle, NINT datno);

DESCRIPTION

ctdbAttachTable() attaches a FairCom DB ISAM datno object to a c-treeDB API table handle. This function is useful if you have opened a data and index file using one of c- tree’s ISAM open functions and need to attach it to a table handle to use some of the advanced c-treeDB API features such as alter table or the record handler. Handle is a table handle and datno is data file number opened with one of the c-tree ISAM open functions.

RETURN

Value	Symbolic Constant	Explanation
0	NO_ERROR	No error occurred.

See Appendix A for a complete listing of valid c-tree Plus error values.

EXAMPLE

CTHANDLE hSession = ctdbAllocSession(CTSESSION_CTREE);

CTHANDLE hTable = ctdbAllocTable(hSession);

CTHANDLE hRecord = ctdbAllocRecord(hTable);

NINT datno, count = 0;

/* logon to c-tree */

ctdbLogon(hSession, SERVER, USER, PASSWD);

/* open the file using c-tree ISAM */

datno = (NINT)OPNRFILX((COUNT) -1, "test309.dat", (COUNT)0, NULL);

/* attach to table */

ctdbAttachTable(hTable, datno);

/* read the records */

if (ctdbFirstRecord(hRecord) == CTDBRET_OK)

{

count++;

}

while (ctdbNextRecord(hRecord) == CTDBRET_OK);

/* cleanup */

ctdbDetachtable(hTable);

ctdbFreeRecord(hRecord);

ctdbFreeTable(hTable);

ctdbLogout(hSession);

ctdbFreeSession(hSession);