DeltaImpl

Kind of class:class
Inherits from:Object
Implements:
Classpath:mx.data.components.datasetclasses.DeltaImpl
File last modified:Tuesday, 18 December 2007, 15:44:38
Delta implementation which handles a list of DeltaItems.

Summary


Constructor
  • DeltaImpl (id:Object, curSrc:Object, op:Number, msg:String, acl:Boolean)
    • Initializes an instance of a Delta.
Instance properties
Instance methods
  • addDeltaItem (item:DeltaItem) : Void
    • Adds the specified item to the delta item list or replaces an existing one found
  • getId : Object
    • Returns the unique id for this delta.
  • getOperation : Number
    • Returns the associated operation for this Delta.
  • getChangeList : Array
    • Returns the list of changes for the associated transfer object.
  • getItemByName (name:String) : DeltaItem
    • Returns the DeltaItem with the specified name if it can be found in the list,
  • getSource : Object
    • Returns the source object that this DeltaImpl has recorded changes for.
  • getMessage : String
    • Returns any message associated with this Delta.
  • getDeltaPacket : Object
    • Returns a reference to the DeltaPacket for this Delta.
  • getItemIndexByName (name:String) : Number
    • Returns the index of a delta item in the list with the specified name, or -1 if

Constructor

DeltaImpl

function DeltaImpl (
id:Object, curSrc:Object, op:Number, msg:String, acl:Boolean)

Initializes an instance of a Delta.
Parameters:
id :
Object that identifies this Delta within the DeltaPacket
curSrc:
Object source transfer object reference in its current state
msg :
String [optional] message to associate with this delta item
acl :
Boolean [optional] indicates that access to the change list is permitted
at all times.

Instance properties

_accessCl

private _accessCl:Boolean
(read)

_deltaItems

private _deltaItems:Array
(read)

_id

private _id:Object
(read)

_message

private _message:String
(read)

_op

private _op:Number
(read)

_owner

private _owner:Object
(read)

_source

private _source:Object
(read)

Instance methods

addDeltaItem

function addDeltaItem (
item:DeltaItem) : Void

Adds the specified item to the delta item list or replaces an existing one found
with the same name.
Parameters:
item:
DeltaItem to add to the list

getChangeList

function getChangeList (
) : Array

Returns the list of changes for the associated transfer object.
Returns:
  • Array of DeltaItems associated with this Delta
Specified by:

getDeltaPacket

function getDeltaPacket (
) : Object

Returns a reference to the DeltaPacket for this Delta.
Returns:
  • Object reference to the DeltaPacket for this Delta
Specified by:

getId

function getId (
) : Object

Returns the unique id for this delta.
Returns:
  • Object containing the id which relates this delta back to the
    associated transfer object.
Specified by:

getItemByName

function getItemByName (
name:String) : DeltaItem

Returns the DeltaItem with the specified name if it can be found in the list,
if the item can not be found null is returned
Returns:
  • DeltaItem with the specified name or null if not found
Specified by:

getItemIndexByName

private function getItemIndexByName (
name:String) : Number

Returns the index of a delta item in the list with the specified name, or -1 if
it isn't found.
Returns:
  • Number index of delta item within the list or -1 if not found.

getMessage

function getMessage (
) : String

Returns any message associated with this Delta.
Returns:
  • String containing the associated message or "" if not defined
Specified by:

getOperation

function getOperation (
) : Number

Returns the associated operation for this Delta. Valid values are
  • DeltaPacketConst.Added
  • DeltaPacketConst.Removed
  • DeltaPacketConst.Modified
    • Returns:
    • Number indicating which operation occurred for this Delta.
    Specified by:

    getSource

    function getSource (
    ) : Object

    Returns the source object that this DeltaImpl has recorded changes for.
    Returns:
    • Object source of the changes
    Specified by: