FIND-BY-ROWID( ) method

Locates the record with the rowid you specify, then moves the record into the buffer.

Return type:

LOGICAL

Applies to:

Buffer object handle

 

Syntax 

FIND-BY-ROWID ( rowid [ , { SHARE-LOCK | EXCLUSIVE-LOCK | NO-LOCK } [ , NO-WAIT ] ] )

rowid

An expression of type ROWID that represents the rowid of the desired record.

SHARE-LOCK | EXCLUSIVE-LOCK | NO-LOCK

The type of lock that the AVM places on the record, if found. The default is SHARE-LOCK.

Note:

For more information on record locks, see OpenEdge Getting Started: ABL Essentials.

NO-WAIT

Causes FIND-BY-ROWID to return FALSE immediately if another user has a lock on the desired record and FIND-BY-ROWID specifies a locking option other than NO-LOCK.

Note:

To determine whether another user has a lock on the desired record, use the LOCKED attribute of the buffer object.

The FIND-BY-ROWID method returns TRUE if it finds the record, and FALSE if it does not.

The following is an example:

 

DEFINE VARIABLE bh AS HANDLE NO-UNDO. DEFINE VARIABLE r  AS ROWID  NO-UNDO.   r = ... /* ROWID from some parameter */ bh = BUFFER CUSTOMER:HANDLE. bh:FIND-BY-ROWID(r).

Note:

The FIND-BY-ROWID method corresponds to a FIND statement of the form FIND buffer WHERE ROWID ( buffer ) = rowid ..., etc. That is, triggers are honored, and the default lock mode is SHARE-LOCK. One difference, however, is that the FIND-BY-ROWID method does not raise an error if it cannot find the record.