NAME

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

VERSION

       This document describes RDF::Trine::Iterator::Graph version 1.019

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.