MACROMEDIA FLASH MEDIA SERVER 2-SERVER MANAGEMENT ACTIONSCRIPT LANGUAGE Manuel d'utilisateur télécharger pdf (Page 83)

ADOBE FLASH MEDIA INTERACTIVE SERVER

Server-Side ActionScript Language Reference

• Server-side shared objects can be owned by the current application instance or by another application instance.

The other application instance can be on the same server or on a different server. References to shared objects that

are owned by a different application instance are called proxied shared objects.

If you write a server-side script that modifies multiple properties, you can prevent other clients from modifying the

object during the update by calling the

SharedObject.lock() method before updating the object. Then you can

call

SharedObject.unlock() to commit the changes and allow other changes to be made. Call

SharedObject.mark() to deliver change events in groups within the lock() and unlock() methods.

When you get a reference to a proxied shared object, any changes made to the object are sent to the instance that

owns the object. The success or failure of any changes is sent by using the

SharedObject.onSync() event handler,

if it is defined.

The

SharedObject.lock() and SharedObject.unlock() methods cannot lock or unlock proxied shared objects.

Availability

Flash Communication Server 1

Property summary

Method summary

Property Description

SharedObject.autoCommit A boolean value indicating whether the server periodically stores all persistent shared

objects (true) or not (false).

SharedObject.isDirty Read-only; a boolean value indicating whether the persistent shared object has been modi-

fied since the last time it was stored (true) or not (false).

SharedObject.name Read-only; the name of a shared object.

SharedObject.resyncDepth An integer that indicates when the deleted values of a shared object should be permanently

deleted.

SharedObject.version Read-only; the current version number of a shared object.

Method Description

SharedObject.clear() Deletes all the properties of a single shared object and sends a clear event to all clients that

subscribe to a persistent shared object.

SharedObject.close() Detaches a reference from a shared object.

SharedObject.commit() Static; stores either a specific persistent shared object instance or all persistent shared

object instances with an isDirty property whose value is true.

SharedObject.flush() Saves the current state of a persistent shared object.

SharedObject.get() Static; creates a shared object or returns a reference to an existing shared object.

SharedObject.getProperty() Retrieves the value of a named property in a shared object.

SharedObject.getPropertyNames() Enumerates all the property names for a given shared object.

SharedObject.lock() Locks a shared object.

SharedObject.mark() Delivers all change events to a subscribing client as a single message.

SharedObject.purge() Causes the server to remove all deleted properties that are older than the specified version.

SharedObject.send() Executes a method in a client-side script.

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