AccessorKey key = new AccessorKey( pkgName + className,
expr,
AccessorKey.AccessorType.FieldAccessor );
FieldLookupEntry entry = (FieldLookupEntry) this.lookup.get( key );
if ( entry == null ) {
MVELClassFieldReader reader = new MVELClassFieldReader( className, expr, typesafe );
entry = new FieldLookupEntry( reader );
this.lookup.put( key,
entry );
}