public Class getInterfaceClass()

in tapestry-framework/src/org/apache/tapestry/enhance/javassist/OGNLExpressionCompiler.java [74:109]

30 lines of code
16 McCabe index (conditional complexity)


    public Class getInterfaceClass(Class clazz)
    {
        if (IRender.class.isAssignableFrom(clazz) || clazz.isInterface()
            || Modifier.isPublic(clazz.getModifiers()))
            return clazz;

        if (clazz.getName().equals("java.util.AbstractList$Itr"))
            return Iterator.class;

        if (Modifier.isPublic(clazz.getModifiers())
            && clazz.isInterface() || clazz.isPrimitive())
        {
            return clazz;
        }

        Class[] intf = clazz.getInterfaces();

        for (int i = 0; i < intf.length; i++)
        {
            if (List.class.isAssignableFrom(intf[i]))
                return List.class;
            else if (Iterator.class.isAssignableFrom(intf[i]))
                return Iterator.class;
            else if (Map.class.isAssignableFrom(intf[i]))
                return Map.class;
            else if (Set.class.isAssignableFrom(intf[i]))
                return Set.class;
            else if (Collection.class.isAssignableFrom(intf[i]))
                return Collection.class;
        }

        if (clazz.getSuperclass() != null && clazz.getSuperclass().getInterfaces().length > 0)
            return getInterfaceClass(clazz.getSuperclass());

        return clazz;
    }