Flash CS3 Documentation 
Flash CS3 Documentation |
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| ActionScript 2.0 Components Language Reference > DataSet component > DataSet.deltaPacket | |||
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Flash Player 7.
Flash MX Professional 2004.
dataSetInstance.deltaPacket
Property; returns a delta packet that contains all of the change operations made to the dataSet collection and its items. This property is null until DataSet.applyUpdates() is called on dataSet.
When DataSet.applyUpdates() is called, a transaction ID is assigned to the delta packet. This transaction ID is used to identify the delta packet on an update round trip from the server and back to the client. Any subsequent assignment to the deltaPacket property by a delta packet with a matching transaction ID is assumed to be the server's response to the changes previously sent. A delta packet with a matching ID is used to update the collection and report errors specified within the packet.
Errors or server messages are reported to listeners of the DataSet.resolveDelta event. Note that the DataSet.logChanges settings are ignored when a delta packet with a matching ID is assigned to DataSet.deltaPacket. A delta packet without a matching transaction ID updates the collection, as if the DataSet API were used directly. This may create additional delta entries, depending on the current DataSet.logChanges setting of dataSet and the delta packet.
A DataSetError exception is thrown if a delta packet is assigned with a matching transaction ID and one of the items in the newly assigned delta packet cannot be found in the original delta packet.
DataSet.applyUpdates(), DataSet.logChanges, DataSet.resolveDelta
Flash CS3