GuardedObject

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public class GuardedObject extends Object
implements Serializable

A GuardedObject is an object that is used to protect access to another object.

A GuardedObject encapsulates a target object and a Guard object, such that access to the target object is possible only if the Guard object allows it. Once an object is encapsulated by a GuardedObject, access to that object is controlled by the getObject method, which invokes the checkGuard method on the Guard object that is guarding access. If access is not allowed, an exception is thrown.

See Also

Public Constructor Summary

GuardedObject(Object object, Guard guard)
Constructs a GuardedObject using the specified object and guard.

Public Method Summary

Object
getObject()
Retrieves the guarded object, or throws an exception if access to the guarded object is denied by the guard.

Inherited Method Summary

Public Constructors

public GuardedObject (Object object, Guard guard)

Constructs a GuardedObject using the specified object and guard. If the Guard object is null, then no restrictions will be placed on who can access the object.

Parameters
object the object to be guarded.
guard the Guard object that guards access to the object.

Public Methods

public Object getObject ()

Retrieves the guarded object, or throws an exception if access to the guarded object is denied by the guard.

Returns
  • the guarded object.
Throws
SecurityException if access to the guarded object is denied.