I'm trying to use the Perl API in Redland, and I've
got much of it working. But one feature quite
confuses me: $model->get_targets.
If I create a statement populated
with the three node objects and put it into my model,
I have no trouble printing the whole statement.
But then I use:
$list = $model->get_targets($subject, $predicate);
Perl debug shows I'm getting back an Iterator object.
When I use $list->next to get each node in turn,
I don't get my target node as expected.
Debug shows the object returned is a RDF::Node, but with
{NODE} = _p_void
and it gives a type error when I try to apply ->as_string
to print it.
The Iterator.pm "sub next" comment says:
(2) the node returned is shared with the iterator.
What exactly is an iterator, and what does it mean
that a node is shared with it? More importantly, how
can I get my target node back?
BTW, do you need some help documenting the Perl API?
bobs
Bob Stayton 400 Encinal Street
Publications Architect Santa Cruz, CA 95060
Technical Publications voice: (831) 427-7796
The Santa Cruz Operation, Inc. fax: (831) 429-1887
email: bobs at sco.com