User Guide

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CHAPTER 18
Delta interface (Flash
Professional only)
ActionScript Interface Name mx.data.components.datasetclasses.Delta
The Delta interface provides access to the transfer object, collection, and transfer object-level
changes. With this interface you can access the new and previous values in a transfer object.
For example, if the delta packet was obtained from a data set, each delta would represent an
added, edited, or deleted row.
The Delta interface also provides access to messages returned by the associated server-side
process. For more information on client-server interactions, see “RDBMSResolver
component (Flash Professional only)” on page 1047.
Use the Delta interface to examine the delta packet before sending changes to the server and
to review messages returned from server-side processing.
Method summary for the Delta interface
The following table lists the methods of the Delta interface.
Method Description
Delta.addDeltaItem() Adds the specified DeltaItem instance.
Delta.getChangeList() Returns an array of changes made to the current item.
Delta.getDeltaPacket() Returns the delta packet that contains the delta.
Delta.getId() Returns the unique ID of the current item within the
DeltaPacket collection.
Delta.getItemByName() Returns the specified DeltaItem object.
Delta.getMessage() Returns the message associated with the current item.
Delta.getOperation() Returns the operation that was performed on the current
item within the original collection.
Delta.getSource() Returns the transfer object on which the changes
were performed.