DeltaItem

Kind of class:class
Inherits from:Object
Author:Jason Williams
Classpath:mx.data.components.datasetclasses.DeltaItem
File last modified:Tuesday, 18 December 2007, 15:44:38
The DeltaItem class provides information about an individual operation
performed on a transfer object. For example the DeltaItem indicates if a
change made was for a property of the transfer object or a method call. It
also provides the original state of properties on a transfer object.

Summary


Constructor
  • DeltaItem (kind:Number, name:String, init:Object, owner:Object)
    • Constructs an instance of the DeltaItem using the kind, name and initializer specifed.
Class properties
Instance properties
  • argList : Array
    • Read only; If this mutation's kind is DeltaItem.Method this will be the argument list
  • delta : Object
    • Read only; Returns the reference to the delta this item belongs to.
  • kind : Number
    • Read only; Returns this mutation's kind.
  • message : String
    • Read-only; Returns the mutation's associated message.
  • name : String
    • Read-only; If this mutation's kind is DeltaItem.Method this will be the name of the
  • curValue : Object
    • Read-only; If this is a server response this will be the current property value of the
  • newValue : Object
    • Read-only; If this mutation's kind is DeltaItem.Property this will be the new value
  • oldValue : Object
    • Read-only; If this mutation's kind is DeltaItem.Property this will be the old value
  • __name : String
  • __kind : Number
  • __argList : Array
  • __oldValue : Object
  • __newValue : Object
  • __curValue : Object
  • __message : String
  • __owner : Object

Constructor

DeltaItem

function DeltaItem (
kind:Number, name:String, init:Object, owner:Object)

Constructs an instance of the DeltaItem using the kind, name and initializer specifed.
Parameters:
kind :
Number indicating what kind of delta item this is. Valid values are:
  • DeltaItem.Property
    • - change to a property
  • DeltaItem.Method
    • - method invocation
    name :
    String containing the name of the property or method
    init :
    Object initializer containing the remaining properties based on the kind
    specified. i.e.
    if kind is DeltaItem.Property the initializer must contain
    {oldValue:..., newValue:...., curValue:..., message:"..."}
    if kind is DeltaItem.Method the initializer must contain
    {argList:Array..., message:"..."}
    owner:
    Object that this delta item belongs to.

    Class properties

    Method

    static Method:Number = 1
    (read)

    Property

    static Property:Number = 0
    (read)

    Instance properties

    __argList

    private __argList:Array
    (read)

    __curValue

    private __curValue:Object
    (read)

    __kind

    private __kind:Number
    (read)

    __message

    private __message:String
    (read)

    __name

    private __name:String
    (read)

    __newValue

    private __newValue:Object
    (read)

    __oldValue

    private __oldValue:Object
    (read)

    __owner

    private __owner:Object
    (read)

    argList

    argList:Array
    (read)

    Read only; If this mutation's kind is DeltaItem.Method this will be the argument list
    passed to the method call when the mutation occured.

    curValue

    curValue:Object
    (read)

    Read-only; If this is a server response this will be the current property value of the
    server instance of the transfer object.

    delta

    delta:Object
    (read)

    Read only; Returns the reference to the delta this item belongs to.

    kind

    kind:Number
    (read)

    Read only; Returns this mutation's kind. It will be one of the following
  • DeltaItem.Property
  • DeltaItem.Method

    • message

    message:String
    (read)

    Read-only; Returns the mutation's associated message. This is generally used for a server side
    response message to the update operation that was performed.

    name

    name:String
    (read)

    Read-only; If this mutation's kind is DeltaItem.Method this will be the name of the
    method that was called to create the mutation.

    newValue

    newValue:Object
    (read)

    Read-only; If this mutation's kind is DeltaItem.Property this will be the new value
    of the property, i.e. the value the property was last set to.

    oldValue

    oldValue:Object
    (read)

    Read-only; If this mutation's kind is DeltaItem.Property this will be the old value
    of the property, i.e. the value of the property before it was set.