RDF::Query::Model - Model base class
This document describes RDF::Query::Model version 2.200, released 6 August 2009.
parsedReturns the query parse tree.
new_resource ( $uri )Returns a new resource object.
new_literal ( $string,
$language,
$datatype )Returns a new literal object.
new_blank ( $identifier )Returns a new blank node object.
new_statement ( $s,
$p,
$o )Returns a new statement object.
new_variable ( $name )Returns a new variable object.
as_native ( $node,
$base,
\%namespaces )Returns bridge-native RDF node objects for the given node.
as_string ( $node )Returns a string version of the node object.
is_node ( $node )
isa_node ( $node )Returns true if $node is a node object for the current model.
is_resource ( $node )
isa_resource ( $node )Returns true if $node is a resource object for the current model.
is_literal ( $node )
isa_literal ( $node )Returns true if $node is a literal object for the current model.
is_blank ( $node )
isa_blank ( $node )Returns true if $node is a blank node object for the current model.
literal_value ( $node )Returns the string value of the literal object.
literal_datatype ( $node )Returns the datatype of the literal object.
literal_value_language ( $node )Returns the language of the literal object.
uri_value ( $node )Returns the URI string of the resource object.
blank_identifier ( $node )Returns the identifier for the blank node object.
equals ( $node_a,
$node_b )Returns true if $node_a and $node_b are equal
subject ( $statement )Returns the subject of the statement.
predicate ( $statement )Returns the predicate of the statement.
object ( $statement )Returns the object of the statement.
get_statements ( $subject,
$predicate,
$object )Returns a stream object of all statements matching the specified subject, predicate and objects. Any of the arguments may be undef to match any value.
get_basic_graph_pattern ( $execution_context,
@triples )Returns a stream object of all variable bindings matching the specified RDF::Trine::Statement objects.
get_computed_statements ( $subject,
$predicate,
$object,
$query,
\%bound )Returns a stream object of all computed statements matching the specified subject, predicate and objects. Any of the arguments may be undef to match any value.
get_named_statements ( $subject,
$predicate,
$object,
$context )Returns a stream object of all statements matching the specified subject, predicate, object and context. Any of the arguments may be undef to match any value.
count_statements ($subject,
$predicate,
$object)Returns a stream object of all statements matching the specified subject, predicate and objects. Any of the arguments may be undef to match any value.
node_count ( $subj,
$pred,
$obj )Returns a number representing the frequency of statements in the model matching the given triple. This number is used in cost analysis for query optimization, and has a range of [0, 1] where zero represents no matching triples in the model and one represents matching all triples in the model.
fixup ( $pattern,
$query,
$base,
\%namespaces )Called prior to query execution,
if the underlying model can optimize the execution of $pattern,
this method returns a optimized RDF::Query::Algebra object to replace $pattern.
Otherwise,
returns undef and the fixup method of $pattern will be used instead.
debugPrints debugging information about the model (including all statements in the model) to STDERR.
Gregory Williams <gwilliams@cpan.org>
