PersistenceManager

Package	spark.managers
Class	public class PersistenceManager
Inheritance	PersistenceManager Object
Implements	IPersistenceManager

Language Version:

ActionScript 3.0

Product Version:

Flex 4.5

Runtime Versions:

AIR 2.5

The PersistenceManager class is a basic persistence manager that is backed by a local shared object named FxAppCache. When initialized, it loads a local shared object that matches its id. If a local shared object is not found, it is created.

When storing values using the manager, it is important that all values can be properly be written to a shared object. Complex objects that store classes or non-standard flash primitives must implement flash.net.IExternalizable interface to work properly. Saving incompatible objects does not cause an RTE, but creates undefined behavior when the data is read back.

Related API Elements

flash.utils.IExternalizable

Public Properties

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	Property		Defined By
		constructor : Object A reference to the class object or constructor function for a given object instance.	Object

Public Methods

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	Method		Defined By
		PersistenceManager() Constructor.	PersistenceManager
		clear():void Clears all the data that is being stored by the persistence manager.	PersistenceManager
		getProperty(key:String):Object Returns the value of a property stored in the persistence manager.	PersistenceManager
		hasOwnProperty(name:String):Boolean Indicates whether an object has a specified property defined.	Object
		isPrototypeOf(theClass:Object):Boolean Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.	Object
		load():Boolean Initializes the persistence manager.	PersistenceManager
		propertyIsEnumerable(name:String):Boolean Indicates whether the specified property exists and is enumerable.	Object
		save():Boolean Flushes the data being managed by the persistence manager to disk, or to another external storage file.	PersistenceManager
		setProperty(key:String, value:Object):void Stores a value in the persistence manager.	PersistenceManager
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Sets the availability of a dynamic property for loop operations.	Object
		toLocaleString():String Returns the string representation of this object, formatted according to locale-specific conventions.	Object
		toString():String Returns the string representation of the specified object.	Object
		valueOf():Object Returns the primitive value of the specified object.	Object

Constructor Detail

()

Constructor

public function PersistenceManager()

Language Version:

ActionScript 3.0

Product Version:

Flex 4.5

Runtime Versions:

AIR 2.5

Constructor.

Method Detail

clear

()

method

public function clear():void

Language Version:

ActionScript 3.0

Product Version:

Flex 4.5

Runtime Versions:

AIR 2.5

Clears all the data that is being stored by the persistence manager.

getProperty

()

method

public function getProperty(key:String):Object

Language Version:

ActionScript 3.0

Product Version:

Flex 4.5

Runtime Versions:

AIR 2.5

Returns the value of a property stored in the persistence manager. Properties are saved as key:value pairs.

Parameters

key:String — The property key.

Returns

Object — The value of a property stored in the persistence manager.

load

()

method

public function load():Boolean

Language Version:

ActionScript 3.0

Product Version:

Flex 4.5

Runtime Versions:

AIR 2.5

Initializes the persistence manager.

Returns

Boolean — true if the operation is successful.

save

()

method

public function save():Boolean

Language Version:

ActionScript 3.0

Product Version:

Flex 4.5

Runtime Versions:

AIR 2.5

Flushes the data being managed by the persistence manager to disk, or to another external storage file.

Returns

Boolean — true if the operation is successful.

setProperty

()

method

public function setProperty(key:String, value:Object):void

Language Version:

ActionScript 3.0

Product Version:

Flex 4.5

Runtime Versions:

AIR 2.5

Stores a value in the persistence manager. Properties are saved as key:value pairs.

Parameters

	`key:String` — The key to use to store the value.

	`value:Object` — The value object to store.

PersistenceManager - AS3 Flex

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