net.jini.security.proxytrust

Interface TrustEquivalence

All Known Implementing Classes:

ProxyTrustInvocationHandler

public interface TrustEquivalence

Defines an interface for checking that an object (that is not yet known to be trusted) is equivalent in trust, content, and function to a known trusted object. This interface can be useful in implementing a TrustVerifier returned by ProxyTrust.getProxyVerifier.

An implementation of this interface must always compare components of the two objects by invoking comparison methods (such as equals or checkTrustEquivalence) on components of the known trusted object, and those comparison methods must in turn compare subcomponents in the same fashion, always invoking comparison methods on components of this.

For example, in the case of a smart proxy wrapped around an inner proxy, where the inner proxy results from exporting a remote object, the inner proxy could be required to be an instance of a class that implements this interface. The verifier could contain a canonical instance of the inner proxy, and use its checkTrustEquivalence method to check that a candidate smart proxy contains the correct inner proxy.

Since:

2.0

Author:

Sun Microsystems, Inc.

Method Summary

Modifier and Type	Method and Description
boolean	checkTrustEquivalence(Object obj) Returns true if the specified object (that is not yet known to be trusted) is equivalent in trust, content, and function to this known trusted object, and returns false otherwise.

Method Detail

checkTrustEquivalence

boolean checkTrustEquivalence(Object obj)

Returns true if the specified object (that is not yet known to be trusted) is equivalent in trust, content, and function to this known trusted object, and returns false otherwise. This method is permitted to delete content of the specified object if that content is cached state that might be stale (relative to the known trusted object's cached state), cannot otherwise be checked, and will be recreated on demand (from content that has been checked) during subsequent operations on the object.

Parameters:

obj - object to check that is not yet known to be trusted

Returns:

true if the specified object (that is not yet known to be trusted) is equivalent in trust, content, and function to this known trusted object, and returns false otherwise