Packagesystem.logic
Classpublic class IfUndefined
InheritanceIfUndefined Inheritance IfTask Inheritance Task Inheritance Object

Perform some tasks based on whether a given value is undefined.

Example : 

                  
     import examples.process.Message;
     import system.process.logic.IfUndefined;
     
     var task:IfUndefined ;
     
     var value:* ;
     
     task = new IfUndefined(value,new Message("then #1"),new Message("else #1")) ;
     task.run() ; // then #1
     
     value = null ;
     task  = new IfUndefined(value,new Message("then #2"),new Message("else #2")) ;
     task.run() ; // else #2
     
     value = "hello" ;
     task = new IfUndefined(value,new Message("then #3"),new Message("else #3")) ;
     task.run() ; // else #3

See also

system.rules.Undefined

Public Properties
 PropertyDefined By
 InheritedfinishIt : Signaler
This signal emit when the notifyFinished method is invoked.
Task
 Inheritedlogger : Logger
Determinates the internal Logger reference of this Loggable object.
Task
 Inheritedphase : String
[read-only] The current phase of the action.
Task
 Inheritedrunning : Boolean
[read-only] Indicates true if the process is in progress.
Task
 InheritedstartIt : Signaler
This signal emit when the notifyStarted method is invoked.
Task
 InheritedthrowError : Boolean
Indicates if the class throws errors or notify a finished event when the task failed.
IfTask
Public Methods
 MethodDefined By
  
IfUndefined(value:*, thenTask:Action = null, elseTask:Action = null, ... elseIfTasks)
Creates a new IfUndefined instance.
IfUndefined
 Inherited
addElse(action:Action):IfTask
Defines the action when the condition block use the else condition.
IfTask
 Inherited
addElseIf(... elseIfTask):IfTask
Defines an action when the condition block use the elseif condition.
IfTask
 Inherited
addRule(rule:*):IfTask
Defines the main conditional rule of the task.
IfTask
 Inherited
addThen(action:Action):IfTask
Defines the action when the condition block success and must run the 'then' action.
IfTask
 Inherited
clone():*
[override] Returns the shallow copy of the object.
IfTask
 Inherited
isLocked():Boolean
Returns true if the object is locked.
Task
 Inherited
lock():void
Locks the object.
Task
 Inherited
notifyFinished():void
Notify an ActionEvent when the process is finished.
Task
 Inherited
notifyStarted():void
Notify an ActionEvent when the process is started.
Task
 Inherited
removeAllElseIf():IfTask
Removes the 'then' action.
IfTask
 Inherited
removeElse():IfTask
Removes the 'else' action.
IfTask
 Inherited
removeRule():IfTask
Removes the 'conditional rule' of the task.
IfTask
 Inherited
removeThen():IfTask
Removes the 'then' action.
IfTask
 Inherited
run(... arguments):void
[override] Run the process.
IfTask
 Inherited
unlock():void
Unlocks the display.
Task
Protected Methods
 MethodDefined By
 Inherited
setRunning(b:Boolean):void
Changes the running property value.
Task
Constructor Detail
IfUndefined()Constructor
public function IfUndefined(value:*, thenTask:Action = null, elseTask:Action = null, ... elseIfTasks)

Creates a new IfUndefined instance.

Parameters
value:* — The value to evaluate.
 
thenTask:Action (default = null) — The Action reference to defines the 'then' block in the 'if' conditional task.
 
elseTask:Action (default = null) — The Action reference to defines the 'else' block in the 'if' conditional task.
 
... elseIfTasks — The Array of ElseIf instance to initialize the 'elseif' blocks in the 'if' conditional task.




Mardi Août 16 2011, 02:33 PM +02:00