static Object getOpenValue(MetaValue mv) throws OpenDataException
{
Object openValue = null;
if(mv instanceof SimpleValue)
{
SimpleValue sv = SimpleValue.class.cast(mv);
openValue = sv.getValue();
}
else if(mv instanceof CompositeValue)
{
CompositeValue cv = CompositeValue.class.cast(mv);
HashMap<String, Object> itemsMap = new HashMap<String, Object>();