java.security

Interface Guard

Known Implementing Classes:
AllPermission, AudioPermission, AuthPermission, AWTPermission, BasicPermission, DaemonPermission, DelegationPermission, FilePermission, HibernatePermission, LoggingPermission, ManagementPermission, MBeanPermission, MBeanServerPermission, MBeanTrustPermission, NetPermission, Permission, PrivateCredentialPermission, PropertyPermission, ReflectPermission, RuntimePermission, SecurityPermission, SerializablePermission, ServicePermission, SocketPermission, SQLPermission, SubjectDelegationPermission, UnresolvedPermission, WebServicePermission

public interface Guard

This interface represents a guard, which is an object that is used to protect access to another object.

This interface contains a single method, checkGuard, with a single object argument. checkGuard is invoked (by the GuardedObject getObject method) to determine whether or not to allow access to the object.

See Also:
GuardedObject

Method Summary

void
checkGuard(Object object)
Determines whether or not to allow access to the guarded object object.

Method Details

checkGuard

public void checkGuard(Object object)
            throws SecurityException
Determines whether or not to allow access to the guarded object object. Returns silently if access is allowed. Otherwise, throws a SecurityException.
Parameters:
object - the object being protected by the guard.
Throws:
SecurityException - if access is denied.
Usages and Demos :

View More Examples of checkGuard(Object object)
   1: public
   2: class PermissionChain implements Guard, Serializable
   3: {
   4:         ...
   5:        for(int i=0;i<oGuards.size();i++){
   6:          Guard oG = (Guard) oGuards.elementAt(i);
   7:          oLogger.debug("checking guard["+oG.getClass().getName()+"]");
   8:         ...
   9:          try{
  10:            oG.checkGuard(o);
  11:            boPass = true;

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