C# Class Microsoft.Isam.Esent.Interop.Update

A class that encapsulates an update on a JET_TABLEID.

Inheritance: Microsoft.Isam.Esent.Interop.EsentResource

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Public Methods

Method	Description
Cancel ( ) : void	Cancel the update.
Save ( ) : void	Update the tableid. Save is the final step in performing an insert or an update. The update is begun by calling creating an Update object and then by calling JetSetColumn or JetSetColumns one or more times to set the record state. Finally, Update is called to complete the update operation. Indexes are updated only by Update or and not during JetSetColumn or JetSetColumns
Save ( byte bookmark, int bookmarkSize, int &actualBookmarkSize ) : void	Update the tableid. Save is the final step in performing an insert or an update. The update is begun by calling creating an Update object and then by calling JetSetColumn or JetSetColumns one or more times to set the record state. Finally, Update is called to complete the update operation. Indexes are updated only by Update or and not during JetSetColumn or JetSetColumns
SaveAndGotoBookmark ( ) : void	Update the tableid and position the tableid on the record that was modified. This can be useful when inserting a record because by default the tableid remains in its old location. Save is the final step in performing an insert or an update. The update is begun by calling creating an Update object and then by calling JetSetColumn or JetSetColumns one or more times to set the record state. Finally, Update is called to complete the update operation. Indexes are updated only by Update or and not during JetSetColumn or JetSetColumns
Update ( JET_SESID sesid, JET_TABLEID tableid, JET_prep prep ) : System	Initializes a new instance of the Update class. This automatically begins an update. The update will be cancelled if not explicitly saved.

Protected Methods

Method	Description
ReleaseResource ( ) : void	Called when the transaction is being disposed while active. This should rollback the transaction.

Method Details

Cancel() public method

Cancel the update.

public Cancel ( ) : void
return	void

ReleaseResource() protected method

Called when the transaction is being disposed while active. This should rollback the transaction.

protected ReleaseResource ( ) : void
return	void

Save() public method

Update the tableid.

Save is the final step in performing an insert or an update. The update is begun by calling creating an Update object and then by calling JetSetColumn or JetSetColumns one or more times to set the record state. Finally, Update is called to complete the update operation. Indexes are updated only by Update or and not during JetSetColumn or JetSetColumns

public Save ( ) : void
return	void

Save() public method

Update the tableid.

public Save ( byte bookmark, int bookmarkSize, int &actualBookmarkSize ) : void
bookmark	byte	Returns the bookmark of the updated record. This can be null.
bookmarkSize	int	The size of the bookmark buffer.
actualBookmarkSize	int	Returns the actual size of the bookmark.
return	void

SaveAndGotoBookmark() public method

Update the tableid and position the tableid on the record that was modified. This can be useful when inserting a record because by default the tableid remains in its old location.

public SaveAndGotoBookmark ( ) : void
return	void

Update() public method

Initializes a new instance of the Update class. This automatically begins an update. The update will be cancelled if not explicitly saved.

public Update ( JET_SESID sesid, JET_TABLEID tableid, JET_prep prep ) : System
sesid	JET_SESID	The session to start the transaction for.
tableid	JET_TABLEID	The tableid to prepare the update for.
prep	JET_prep	The type of update.
return	System