|Oracle® Objects for OLE Developer's Guide
11g Release 2 (11.2) for Microsoft Windows
|PDF · Mobi · ePub|
Update method completes an
Edit operation and immediately commits changes to the database unless a
BeginTrans operation is pending for the session.
Update method is called on a given row in a dynaset in a global transaction (that is, a
BeginTrans operation is issued), locks remain on the selected rows until a
Rollback method is called.
The mirrored data image is also updated so that the query does not have to be reevaluated to continue browsing and updating data. The method used for updating the mirror image is subject to the options flag that was passed to the
OpenDatabase method that created the
OraDatabase object of this dynaset.
If this dynaset is attached to a data control, then the
Validate event of the data control code may optionally cancel the update request. If the update completes, then all bound controls associated with the dynaset are notified of the update so they can reflect the data changes automatically.
This example demonstrates the use of
Update methods to add a new record to a dynaset. Copy and paste this code into the definition section of a form. Then, press F5.
Sub Form_Load () 'Declare variables Dim OraSession As OraSession Dim OraDatabase As OraDatabase Dim OraDynaset As OraDynaset 'Create the OraSession Object. Set OraSession = CreateObject("OracleInProcServer.XOraSession") 'Create the OraDatabase Object by opening a connection to Oracle. Set OraDatabase = OraSession.OpenDatabase("ExampleDb", "scott/tiger", 0&) 'Create the OraDynaset Object. Set OraDynaset = OraDatabase.CreateDynaset("select * from emp", 0&) 'Begin an AddNew. OraDynaset.AddNew 'Set the field(column) values. OraDynaset.Fields("EMPNO").Value = "1000" OraDynaset.Fields("ENAME").Value = "WILSON" OraDynaset.Fields("JOB").Value = "SALESMAN" OraDynaset.Fields("MGR").Value = "7698" OraDynaset.Fields("HIREDATE").Value = "19-SEP-92" OraDynaset.Fields("SAL").Value = 2000 OraDynaset.Fields("COMM").Value = 500 OraDynaset.Fields("DEPTNO").Value = 30 'End the AddNew and Update the dynaset. OraDynaset.Update End Sub