NAME

       RDF::Trine::Iterator::Graph - Iterator class for graph query results

VERSION

       This document describes RDF::Trine::Iterator::Graph version 1.007

SYNOPSIS

        use RDF::Trine::Iterator::Graph;

        my $iterator = RDF::Trine::Iterator::Graph->new( \&data );
        while (my $st = $iterator->next) {
          # $st is a RDF::Trine::Statement object
          print $st->as_string;
        }

METHODS

       Beyond the methods documented below, this class inherits methods from the RDF::Trine::Iterator class.

       "new ( \@results, %args )"
       "new ( \&results, %args )"
           Returns a new SPARQL Result interator object. Results must be either an reference to an array
           containing results or a CODE reference that acts as an iterator, returning successive items when
           called, and returning undef when the iterator is exhausted.

           $type should be one of: bindings, boolean, graph.

       "as_bindings ( $s, $p, $o )"
           Returns the iterator as a Bindings iterator, using the supplied triple nodes to determine the
           variable bindings.

       "materialize"
           Returns a materialized version of the current graph iterator.  The materialization process will leave
           this iterator empty. The materialized iterator that is returned should be used for any future need
           for the iterator's data.

       "unique"
           Returns a Graph iterator that ensures the returned statements are unique. While the underlying RDF
           graph is the same regardless of uniqueness, the iterator's serialization methods assume the results
           are unique, and so use this method before serialization.

           Uniqueness is opt-in for efficiency concerns -- this method requires O(n) memory, and so may have
           noticeable effects on large graphs.

       "is_graph"
           Returns true if the underlying result is an RDF graph.

       "as_string ( $max_size [, \$count] )"
           Returns a string table serialization of the stream data.

       "as_xml ( $max_size )"
           Returns an XML serialization of the stream data.

       "print_xml ( $fh, $max_size )"
           Prints an XML serialization of the stream data to the filehandle $fh.

       "as_json ( $max_size )"
           Returns a JSON serialization of the stream data.

       "as_hashref"
           Returns a hashref representing the model in an RDF/JSON-like manner.

           See "as_hashref" at RDF::Trine::Model for full documentation of the hashref format.

       "construct_args"
           Returns the arguments necessary to pass to the stream constructor _new to re-create this stream
           (assuming the same closure as the first

DEPENDENCIES

       JSON

       Scalar::Util

BUGS

       Please report any bugs or feature requests to through the GitHub web interface at
       <https://github.com/kasei/perlrdf/issues>.

AUTHOR

       Gregory Todd Williams  "<gwilliams@cpan.org>"

COPYRIGHT

       Copyright (c) 2006-2012 Gregory Todd Williams. This program is free software; you can redistribute it
       and/or modify it under the same terms as Perl itself.