1RDF::Redland::Iterator(U3s)er Contributed Perl DocumentatRiDoFn::Redland::Iterator(3)
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NAME

6       RDF::Redland::Iterator - Redland RDF Iterator Class
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SYNOPSIS

9         use RDF::Redland;
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11         ...
12         my $iterator=$model->targets_iterator($source_node, $arc_node);
13         while($iterator && !$iterator->end) {
14           my $node=$iterator->current;
15           ...
16           $iterator->next;
17         }
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DESCRIPTION

20       This class is used to return lists of RDF::Redland::Node objects from a
21       method that returns an RDF::Redland::Iterator - commonly one of the
22       get_sources_iterator, get_targets_iterator or get_arcs_iterator methods
23       of the RDF::Redland::Model class.
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25       This allows efficient retrieval of long lists of RDF::Redland::Node
26       objects but isn't really very Perl-friendly.  The get_sources,
27       get_targets or get_arcs methods of RDF::Redland::Model class return
28       Perl lists and the get_source, get_target and get_arc methods return
29       single arbitrary results.
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CONSTRUCTORS

32       No public constructors - are created and returned from various methods
33       of classes including RDF::Redland::Model
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METHODS

36       end Return non 0 if the iterator has finished
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38       current
39           Returns the current RDF::Redland::Node object from the iteration or
40           undef if the iteration is finished.
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42       next
43           Moves the iterator to the next item, returns undef if the iteration
44           is finished.
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46       context
47           Returns the context RDF::Redland::Node object from the iteration or
48           undef if the iteration is finished.
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SEE ALSO

51       RDF::Redland::Model and RDF::Redland::Node
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AUTHOR

54       Dave Beckett - http://www.dajobe.org/
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58perl v5.30.1                      2020-01-30         RDF::Redland::Iterator(3)
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