Api.EscrowUpdate method

Perform atomic addition on one column. The column must be of type Long. This function allows multiple sessions to update the same record concurrently without conflicts.

Namespace:  Microsoft.Isam.Esent.Interop
Assembly:  Microsoft.Isam.Esent.Interop (in Microsoft.Isam.Esent.Interop.dll)

Syntax

'Declaration
Public Shared Function EscrowUpdate ( _
    sesid As JET_SESID, _
    tableid As JET_TABLEID, _
    columnid As JET_COLUMNID, _
    delta As Integer _
) As Integer
'Usage
Dim sesid As JET_SESID
Dim tableid As JET_TABLEID
Dim columnid As JET_COLUMNID
Dim delta As Integer
Dim returnValue As Integer

returnValue = Api.EscrowUpdate(sesid, _
    tableid, columnid, delta)

public static int EscrowUpdate(
    JET_SESID sesid,
    JET_TABLEID tableid,
    JET_COLUMNID columnid,
    int delta
)

Parameters

• sesid
  Type: Microsoft.Isam.Esent.Interop.JET_SESID

  The session to use.

• tableid
  Type: Microsoft.Isam.Esent.Interop.JET_TABLEID

  The cursor to update.

• columnid
  Type: Microsoft.Isam.Esent.Interop.JET_COLUMNID

  The column to update. This must be an escrow-updatable column.

• delta
  Type: System.Int32

  The delta to apply to the column.

Return value

Type: System.Int32
The current value of the column as stored in the database (versioning is ignored).

Remarks

This method wraps JetEscrowUpdate(JET_SESID, JET_TABLEID, JET_COLUMNID, [], Int32, [], Int32, Int32, EscrowUpdateGrbit).

See also

Reference

Api class

Api members

Microsoft.Isam.Esent.Interop namespace