javolution.context.internal.SecurityContextImpl Maven / Gradle / Ivy
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/*
* Javolution - Java(TM) Solution for Real-Time and Embedded Systems
* Copyright (C) 2012 - Javolution (http://javolution.org/)
* All rights reserved.
*
* Permission to use, copy, modify, and distribute this software is
* freely granted, provided that this notice is preserved.
*/
package javolution.context.internal;
import javolution.context.SecurityContext;
import javolution.util.FastTable;
/**
* Holds the default implementation of SecurityContext.
*/
public final class SecurityContextImpl extends SecurityContext {
private FastTable actions = new FastTable();
@Override
public boolean isGranted(Permission permission) {
boolean isGranted = true;
for (Action a : actions) {
if (a.permission.implies(permission))
isGranted = a.grant;
}
return isGranted;
}
@Override
public void grant(Permission permission, Object certificate)
throws SecurityException {
Action a = new Action();
a.grant = true;
a.permission = permission;
actions.add(a);
}
@Override
public void revoke(Permission permission, Object certificate)
throws SecurityException {
Action a = new Action();
a.grant = false;
a.permission = permission;
actions.add(a);
}
@Override
protected SecurityContext inner() {
SecurityContextImpl ctx = new SecurityContextImpl();
ctx.actions.addAll(actions);
return ctx;
}
// Represents the grant/revoke action performed.
private static class Action {
boolean grant; // Else revoke.
Permission permission;
}
}