JET_prep enumeration

Update types for JetPrepareUpdate.

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

Syntax

'Declaration
Public Enumeration JET_prep
'Usage
Dim instance As JET_prep

public enum JET_prep

Members

	Member name	Description
	Insert	This flag causes the cursor to prepare for an insert of a new record. All the data is initialized to the default state for the record. If the table has an auto-increment column, then a new value is assigned to this record regardless of whether the update ultimately succeeds, fails or is cancelled.
	Replace	This flag causes the cursor to prepare for a replace of the current record. If the table has a version column, then the version column is set to the next value in its sequence. If this update does not complete, then the version value in the record will be unaffected. An update lock is taken on the record to prevent other sessions from updating this record before this session completes.
	Cancel	This flag causes JetPrepareUpdate to cancel the update for this cursor.
	ReplaceNoLock	This flag is similar to JET_prepReplace, but no lock is taken to prevent other sessions from updating this record. Instead, this session may receive JET_errWriteConflict when it calls JetUpdate to complete the update.
	InsertCopy	This flag causes the cursor to prepare for an insert of a copy of the existing record. There must be a current record if this option is used. The initial state of the new record is copied from the current record. Long values that are stored off-record are virtually copied.
	InsertCopyDeleteOriginal	This flag causes the cursor to prepare for an insert of the same record, and a delete or the original record. It is used in cases in which the primary key has changed.

See also

Reference

Microsoft.Isam.Esent.Interop namespace