RDF::Query::Plan - Executable query plan nodes.
This document describes RDF::Query::Plan version 2.918.
new
execute ( $execution_context )
next
get_all
Returns all remaining rows.
close
state ( [ $state ] )
Returns the current state of the plan (either READY,
OPEN,
or CLOSED).
If $state
is provided,
updates the plan to a new state.
logging_keys
explain
Returns a string serialization of the query plan appropriate for display on the command line.
sse
serialize
Return a serialization of the query plan.
delegate
Returns the delegate object if available.
referenced_variables
Returns a list of variable names that are referenced by this plan.
as_iterator ( $context )
Returns an RDF::Trine::Iterator object for the current (already executed) plan.
is_update
Returns true if the plan represents an update operation.
label ( $label => $value )
Sets the named $label
to $value
for this plan object.
If no $value
is given,
returns the current label value,
or undef if none exists.
graph_labels
generate_plans ( $algebra,
$execution_context,
%args )
Returns a list of equivalent query plan objects for the given algebra object.
plan_node_name
Returns the string name of this plan node, suitable for use in serialization.
plan_prototype
Returns a list of scalar identifiers for the type of the content (children) nodes of this plan node. These identifiers are recognized:
* 'A' - An RDF::Query::Algebra object * 'b' - A boolean integer value (0 or 1) * 'E' - An expression (either an RDF::Query::Expression object or an RDF node) * 'i' - An integer * 'J' - A valid Project node (an RDF::Query::Expression object or an Variable node) * 'N' - An RDF node * 'P' - A RDF::Query::Plan object * 'q' - A RDF::Query object * 'Q' - An RDF::Trine::Statement::Quad object * 's' - A string * 'T' - An RDF::Trine::Statement object * 'u' - A valid URI string * 'V' - A variable binding set (an object of type RDF::Query::VariableBindings) * 'w' - A bareword string * 'W' - An RDF node or wildcard ('*') * '*X' - A list of X nodes (where X is another identifier scalar) * '\X' - An array reference of X nodes (where X is another identifier scalar)
plan_node_data
Returns the data for this plan node that corresponds to the values described by the signature returned by plan_prototype
.
subplans_of_type ( $type [, $block] )
Returns a list of Plan objects matching $type
(tested with isa
). If $block
is given, then matching stops descending a subtree if the current node is of type $block
, continuing matching on other subtrees. This list includes the current plan object if it matches $type
, and is generated in infix order.
Gregory Todd Williams <gwilliams@cpan.org>