---
name: "RDF::Redland::QueryResults"
section: "3pm"
platform: "linux"
package: "librdf-perl"
version: "1.0.17.1+dfsg-6+b6"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/RDF::Redland::QueryResults"
---

# RDF::Redland::QueryResults(3pm)

Redland RDF Syntax Query Results Class

## NAME

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

## SYNOPSIS

```
  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::Query

## AUTHOR

Dave Beckett - http://www.dajobe.org/