Example: Trim Method for OraCollection

The following example illustrates the Trim method. Before running the sample code, make sure that you have the necessary datatypes and tables in the database. See Schema Description used in examples of OraCollection.

Dim OraSession as OraSession

Dim OraDatabase as OraDatabase

Dim OraDynaset as OraDynaset

Dim EnameList as OraCollection

'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 a dynaset object from department

set OraDynaset = OraDatabase.CreateDynaset("select * from department", 0&)

'retrieve a Enames column from Department.

'Here Value property of OraField object returns EnameList OraCollection

set EnameList = OraDynaset.Fields("Enames").Value

'display the size of the collection

msgbox EnameList.Size

'Trim the EnameList collection by one.

'Before that row level lock should be obtained

OraDynaset.Edit

EnameList.Trim 1

OraDynaset.Update

'display the new size of the collection

msgbox EnameList.Size