1RDF::Redland::QueryResuUlstesr(3C)ontributed Perl DocumeRnDtFa:t:iRoendland::QueryResults(3)
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NAME

6       RDF::Redland::QueryResults - Redland RDF Syntax Query Results Class
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SYNOPSIS

9         use RDF::Redland;
10
11         ...
12         my $query=new RDF::Redland::Query("query string", undef, undef, "sparql");
13         my $results=$model->query_execute($query);
14         # or my $results=$query->execute($model);
15         while(!$results->finished) {
16           for (my $i=0; $i < $results->bindings_count(); $i++) {
17             my $name=$results->binding_name($i);
18             my $value=$results->binding_value($i);
19             # ... do something with the results
20           }
21           $results->next_result;
22         }
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24       The $results in the example is an object of class
25       RDF::Redland::QueryResults.
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DESCRIPTION

28       This class represents queries of various syntaxes over an
29       RDF::Redland::Model returning a sequence of results that bind variable
30       names to RDF::Redland::Node values.
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CONSTRUCTOR

33       There are no public constructors.
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METHODS

36       count
37           Return the number of current results from the query.
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39       finished
40           Return non-0 if the results have been exhausted.
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42       binding_name INDEX
43           Get the name of variable binding INDEX in the array of variable
44           names.
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46       binding_names
47           Get the names all of the variable bindings as an array.
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49       binding_value INDEX
50           Get the value of the variable binding INDEX in the current query
51           result.
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53       binding_values
54           Get the values of all of the variable bindings in the current query
55           result.
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57       binding_value_by_name NAME
58           Get the value of the variable binding NAME in the current query
59           result.
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61       bindings
62           Get the variable names and values of the current query result as a
63           hash
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65       bindings_count
66           Return the number of variable bindings.
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68       next_result
69           Move to the next query result.
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71       as_stream
72           Return a new RDF::Redland::Stream object representing the query
73           results as an RDF Graph.
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75       to_string [FORMAT-URI [BASE-URI]]
76           Serialize to a string syntax in format FORMAT-URI using the
77           optional BASE-URI.  The default format when none is given is
78           determined by librdf_query_results_to_string.
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80       is_bindings
81           Return non-0 if the query results format is variable bindings
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83       is_boolean
84           Return non-0 if the query results format is a boolean
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86       is_graph
87           Return non-0 if the query results format is an RDF graph
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89       get_boolean
90           Get the boolean query result; non-0 is true.
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SEE ALSO

93       RDF::Redland::Query
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AUTHOR

96       Dave Beckett - http://www.dajobe.org/
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100perl v5.30.1                      2020-01-30     RDF::Redland::QueryResults(3)
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