This interface defines a single combine( ) method that combines two arrays of ProtectionDomain objects into a single equivalent (and perhaps optimized) array. You can associate a DomainCombiner with an existing AccessControlContext by calling the two-argument AccessControlContext( ) constructor. Then, when the checkPermission( ) method of the AccessControlContext is called or when the AccessControlContext is passed to a doPrivileged( ) method of AccessController, the specified DomainCombiner merges the protection domains of the current stack frame with the protection domains encapsulated in the AccessControlContext. This class is used only by system-level code; typical applications rarely need to use it.

public interface DomainCombiner {
// Public Instance Methods
     ProtectionDomain[ ] combine(ProtectionDomain[ ] currentDomains, 
        ProtectionDomain[ ] assignedDomains);  
}

Implementations

javax.security.auth.SubjectDomainCombiner

Passed To

AccessControlContext.AccessControlContext( )

Returned By

AccessControlContext.getDomainCombiner( )