Examples of ariba.util.core.ClassExtensionRegistry

ariba.util.core.ClassExtensionRegistry
The ClassExtensionRegistry class provides a convenient and consistent way to cache ClassExtension subclasses. All ClassExtensions must know the class for which they are implemented so that the FieldPath can compare its _previousCalssExtension's class and possible avoid a hash lookup. The ClassExtensionRegistry allows for registering ClassExtension instances by targetClass (where targetClass may be an interface). The lookup algorithm for a ClassExtension for a given class is recursive. Upon looking up a ClassExtension for a given target object, the ClassExtensionRegistry will recurse up the target object's superclass chain and interface inheritance graph until it finds a match. To avoid doing this recursion each time, a clone of the ClassExtension is registered for each subclass as the recursion unwinds. The next time the target object's ClassExtension is sought, it will be found immediately without recursion. Of course, this applies for all subclasses between the base class and the target object as those wil have been cloned/registered along the way. @aribaapi private

        ChoiceSource classExtension)
    {
        // Be thread-safe in case registration occurs in threads due to dynamic loading
        synchronized (ChoiceSource.class) {
            if (_registry == null) {
                _registry = new ClassExtensionRegistry();
            }


            _registry.registerClassExtension(targetObjectClass, classExtension);
        }
    }

View Full Code Here

        Register for the thread local class extension registry.
        @aribaapi private
    */
    public static void registerThreadLocalClassExtension (Class receiverClass, OrderedList orderedListClassExtension)
    {
        ClassExtensionRegistry tlRegistry = 
            (ClassExtensionRegistry)TLClassExtensionRegistry.get();
        if (tlRegistry == null) {
                // Make sure this registry is not added to the global
                // list of registries.
            tlRegistry = new ClassExtensionRegistry(false);
            TLClassExtensionRegistry.set(tlRegistry);
        }
        tlRegistry.registerClassExtension(receiverClass, orderedListClassExtension);
    }

View Full Code Here

        Clear the thread local class extension registry.
        @aribaapi private
    */
    public static void clearThreadLocalClassExtensionRegistry ()
    {
        ClassExtensionRegistry tlRegistry = 
            (ClassExtensionRegistry)TLClassExtensionRegistry.get();
        TLClassExtensionRegistry.set(null);
    }

View Full Code Here

    /**
        Query the thread local registry.
    */
    private static OrderedList getFromThreadLocalRegistry (Object receiver)
    {
        ClassExtensionRegistry registry = 
            (ClassExtensionRegistry)TLClassExtensionRegistry.get();
        if (registry == null) {
            return null;
        }
        return (OrderedList)registry.get(receiver);
    }

View Full Code Here

TOP

Related Classes of ariba.util.core.ClassExtensionRegistry

ariba.ui.validation.ChoiceSource

ariba.util.fieldvalue.OrderedList

java.util.List

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.