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| RDF::Core::Model(3) | User Contributed Perl Documentation | RDF::Core::Model(3) |
NAME
RDF::Core::Model - RDF modelSYNOPSIS
my $storage = new RDF::Core::Storage::Memory;
my $model = new RDF::Core::Model (Storage => $storage);
my $subject = new RDF::Core::Resource('http://www.gingerall.cz/employees/Jim');
my $predicate = $subject->new('http://www.gingerall.cz/rdfns#name');
my $object = new RDF::Core::Literal('Jim Brown');
my $statement = new RDF::Core::Statement($subject, $predicate, $object);
$model->addStmt($statement);
print "Model contains ".$model->countStmts."statement(s).\n"
DESCRIPTION
Model provides interface to store RDF statements, ask about them and retrieve them back.Interface
- •
- new(%options)
$options is a hash reference, available options are
- •
- Storage
a reference to a RDF::Core::Storage implementation
- getOptions
- setOptions(\%options)
- addStmt($statement)
Add RDF::Core::Statement instance to Model, unless it already exists there.
- removeStmt($statement)
Remove statement from Model, if it's there.
- existsStmt($subject,$predicate,$object)
Check if statement exists, that matches given mask. Parameters can be undefined, every value matches undefined parameter.
- countStmts($subject,$predicate,$object)
Count matching statements.
- getStmts($subject,$predicate,$object)
Retrieve matching statements. Returns RDF::Core::Enumerator object.
- getObjects($subject, $predicate)
Return a reference to an array keeping all objects, that are values of specified $predicate for given $subject.
- getContainerObjects($container)
Return a reference to an array keeping all objects, that are members of the $container. Objects are sorted.
LICENSE
This package is subject to the MPL (or the GPL alternatively).AUTHOR
Ginger Alliance, rdf@gingerall.czSEE ALSO
RDF::Core::Statement, RDF::Core::Storage, RDF::Core::Serializer, RDF::Core::Parser, RDF::Core::Enumerator| 2002-06-12 | perl v5.32.1 |
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