c-treeDB API for C++ - Developers Guide

CTTable::Attach

Attaches a c-tree Plus ISAM datno object to a c-treeDB table object.

Declaration

void CTTable::Attach(NINT datno);

Description

datno is data file number opened with one of the c-tree ISAM open functions.

CTTable::Attach() attaches a c-tree Plus ISAM datno object to a c-treeDB table object. 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 features such as alter table or the record handler.

Return

void

Example

CTSession hSession(CTSESSION_CTREE);

CTTable hTable(hSession);

CTRecord hRecord(hTable);

NINT datno, count = 0;

// logon to c-tree

hSession.Logon(SERVER, USER, PASSWD);

// open the file using c-tree ISAM

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

// attach to table

hTable.Attach(datno);

// read the records

if (hRecord.First())

{

count++;

}

while (hRecord.Next());

// cleanup

hTable.Detach();

hSession.Logout();