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RDF::Redland::QueryResults.3pm
Langue: en
Version: 2006-03-16 (ubuntu - 07/07/09)
Section: 3 (Bibliothèques de fonctions)
NAME
RDF::Redland::QueryResults - Redland RDF Syntax Query Results ClassSYNOPSIS
use RDF::Redland; ... my $query=new RDF::Redland::Query("query string", undef, undef, "sparql"); my $results=$model->query_execute($query); # or my $results=$query->execute($model); while(!$results->finished) { for (my $i=0; $i < $results->bindings_count(); $i++) { my $name=$results->binding_name($i); my $value=$results->binding_value($i); # ... do something with the results } $results->next_result; }
The $results in the example is an object of class RDF::Redland::QueryResults.
DESCRIPTION
This class represents queries of various syntaxes over an RDF::Redland::Model returning a sequence of results that bind variable names to RDF::Redland::Node values.CONSTRUCTOR
There are no public constructors.METHODS
- count
- Return the number of current results from the query.
- finished
- Return non-0 if the results have been exhausted.
- binding_name INDEX
- Get the name of variable binding INDEX in the array of variable names.
- binding_names
- Get the names all of the variable bindings as an array.
- binding_value INDEX
- Get the value of the variable binding INDEX in the current query result.
- binding_values
- Get the values of all of the variable bindings in the current query result.
- binding_value_by_name NAME
- Get the value of the variable binding NAME in the current query result.
- bindings
- Get the variable names and values of the current query result as a hash
- bindings_count
- Return the number of variable bindings.
- next_result
- Move to the next query result.
- as_stream
- Return a new RDF::Redland::Stream object representing the query results as an RDF Graph.
- to_string [FORMAT-URI [BASE-URI]]
- Serialize to a string syntax in format FORMAT-URI using the optional BASE-URI. The default format when none is given is determined by librdf_query_results_to_string.
- is_bindings
- Return non-0 if the query results format is variable bindings
- is_boolean
- Return non-0 if the query results format is a boolean
- is_graph
- Return non-0 if the query results format is an RDF graph
- get_boolean
- Get the boolean query result; non-0 is true.
SEE ALSO
RDF::Redland::QueryAUTHOR
Dave Beckett - http://purl.org/net/dajobe/Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre