
RDF::Query::Plan::Aggregate - Executable query plan for Aggregates.

This document describes RDF::Query::Plan::Aggregate version 2.200, released 6 August 2009.

new ( $pattern,
\@group_by,
[ $alias,
$op,
$attribute ],
...
)
execute ( $execution_context )
next
close
patternReturns the query plan that will be used to produce the aggregated data.
groupbyReturns the grouping arguments that will be used to produce the aggregated data.
plan_node_nameReturns the string name of this plan node, suitable for use in serialization.
plan_prototypeReturns a list of scalar identifiers for the type of the content (children) nodes of this plan node. See RDF::Query::Plan for a list of the allowable identifiers.
plan_node_dataReturns the data for this plan node that corresponds to the values described by the signature returned by plan_prototype.
distinctReturns true if the pattern is guaranteed to return distinct results.
orderedReturns true if the pattern is guaranteed to return ordered results.

Gregory Todd Williams <gwilliams@cpan.org>