net.jini.core.constraint

Class Delegation

java.lang.Object

net.jini.core.constraint.Delegation

All Implemented Interfaces:

Serializable, InvocationConstraint

public final class Delegation
extends Object
implements InvocationConstraint, Serializable

Represents a constraint on delegation from the client to the server. If the client delegates to the server, the server receives credentials which allow the server to authenticate using the client's identity in subsequent remote calls that the server makes or receives. (The credentials should at least be sufficient for the authentication mechanism used between the original client and server; they might not be sufficient if a different mechanism is used when exercising the delegation.)

The use of an instance of this constraint does not directly imply a ClientAuthentication.YES constraint; that must be specified separately to ensure that the client actually authenticates itself.

Serialization for this class is guaranteed to produce instances that are comparable with ==.

Since:

2.0

Author:

Sun Microsystems, Inc.

See Also:

ClientAuthentication, DelegationAbsoluteTime, DelegationRelativeTime, ClientSubject, ServerContext, Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static Delegation	NO Do not delegate from the client to the server, such that the server does not receive credentials which would allow it to authenticate using the client's identity.
static Delegation	YES If the client authenticates to the server, then delegate from the client to the server, such that the server receives credentials which allow it to authenticate using the client's identity in subsequent remote calls that the server makes or receives.

Constructor Summary

Constructors

Constructor and Description
Delegation(AtomicSerial.GetArg arg)

Method Summary

Modifier and Type	Method and Description
Object	readResolve() Canonicalize so that == can be used.
String	toString() Returns a string representation of this object.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

YES

public static final Delegation YES

If the client authenticates to the server, then delegate from the client to the server, such that the server receives credentials which allow it to authenticate using the client's identity in subsequent remote calls that the server makes or receives. The mechanisms and credentials used to support delegation are not specified by this constraint. Note that, because this constraint is conditional on client authentication, it does not conflict with ClientAuthentication.NO.

NO

public static final Delegation NO

Do not delegate from the client to the server, such that the server does not receive credentials which would allow it to authenticate using the client's identity.

Constructor Detail

Delegation

public Delegation(AtomicSerial.GetArg arg)
           throws IOException

Throws:

IOException

Method Detail

toString

public String toString()

Returns a string representation of this object.

Overrides:

toString in class Object

readResolve

public Object readResolve()

Canonicalize so that == can be used.

Returns:

true for YES, false for NO.