OpenEdge Development: Mobile Applications - Product ...

eforeUpdate event
beforeUpdate event
Fires before the JSDO, by means of a saveChanges( ) call following an assign( )
call, sends a request the AppServer to update a record.
Applies to: progress.data.JSDO class, saveChanges( ) method, table reference
property (JSDO)
The following parameters appear in the signature of the event handler function:
Syntax
function ( jsdo , record , request )
jsdo
record
request
A reference to the JSDO that is invoking the update operation. For more
information, see the description of the jsdo property of the request object.
A reference to the temp-table record upon which the update operation is about to
act. For more information, see the description of the jsrecord property of the
request object.
A reference to the request object returned before the update operation begins. For
more information, see the description of the request object.
Example:
myjsdo.subscribe('beforeInvoke', 'myMethodName',
onBeforeInvokeMyMethodName);
myjsdo.myMethodName( paramObject );
function onBeforeInvoke ( jsdo , request ) {
/* code to execute before sending request to the server */
};
See also: assign( ) method (JSDO class), subscribe( ) method, unsubscribe( )
method
OpenEdge ® Development: Mobile Applications 203