java.security: public class: GuardedObject

java.security
public class: GuardedObject [javadoc | source]

java.lang.Object
   java.security.GuardedObject

All Implemented Interfaces:
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.

Also see:

Guard

Permission

author: Roland - Schemers

author: Li - Gong

Constructor:

Constructor:
public GuardedObject(Object object, Guard guard) { // the guard this.guard = guard; this.object = object; } 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 GuardedObject(Object object,
    Guard guard) {
   // the guard
        this.guard = guard;
        this.object = object;
}

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.

Method from java.security.GuardedObject Summary:
getObject

Methods from java.lang.Object:
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method from java.security.GuardedObject Detail:
public Object getObject() throws SecurityException { if (guard != null) guard.checkGuard(object); return object; } Retrieves the guarded object, or throws an exception if access to the guarded object is denied by the guard.

Method from java.security.GuardedObject Detail:

 public Object getObject() throws SecurityException {
        if (guard != null)
            guard.checkGuard(object);
        return object;
}

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