NAME

RDF::Query::Stream - Stream (iterator) class for query results.

METHODS

new ( $closure, $type, $names, %args )

Returns a new stream (interator) object. $closure must be a CODE reference that acts as an iterator, returning successive items when called, and returning undef when the iterator is exhausted.

get_boolean

Returns the boolean value of the first item in the stream.

get_all

Returns an array containing all the items in the stream.

to_string ( $format )

Returns a string representation of the stream data in the specified $format. If $format is missing, defaults to XML serialization. Other options are:

http://www.w3.org/2001/sw/DataAccess/json-sparql/

as_xml ( $max_size )

Returns an XML serialization of the stream data.

as_json ( $max_size )

Returns a JSON serialization of the stream data.

boolean_as_xml

Returns an XML serialization of the first stream item, interpreted as a boolean value.

boolean_as_json

Returns a JSON serialization of the first stream item, interpreted as a boolean value.

bindings_as_xml ( $max_size )

Returns an XML serialization of the stream data, interpreted as query variable binding results.

bindings_as_json ( $max_size )

Returns a JSON serialization of the stream data, interpreted as query variable binding results.

graph_as_xml

Returns an XML serialization of the stream data, interpreted as a results graph.

REVISION HISTORY

$Log$
Revision 1.4  2005/07/27 00:30:29  greg
- Added binding_value_by_name() method.

Revision 1.3  2005/06/02 19:31:22  greg
- Bridge object is now passed to the Stream constructor.
- bindings_count() now returns the right number even if there is no data.
- XML Result format now works with RDF::Core models.
- Added XML Results support for graph queries (DESCRIBE, CONSTRUCT).

Revision 1.2  2005/06/01 22:34:18  greg
- Added Boolean XML Results format.

Revision 1.1  2005/06/01 22:10:46  greg
- Moved Stream class to lib/RDF/Query/Stream.pm.
- Fixed tests that broke with previous fix to CONSTRUCT queries.
- Fixed tests that broke with previous change to ASK query results.

AUTHOR

Gregory Williams <gwilliams@cpan.org>