rdf::redland::statement(3pm) [debian man page]

RDF::Redland::Statement(3pm)				User Contributed Perl Documentation			      RDF::Redland::Statement(3pm)

NAME

       RDF::Redland::Statement - Redland RDF Statement Class

SYNOPSIS

	 use RDF::Redland;
	 my $statement1=new RDF::Redland::Statement($statement);
	 my $statement2=new RDF::Redland::Statement($subject,$predicate,$object);
	 ...

	 if($statement->subject->equals($node)) {
	   ...
	 }

DESCRIPTION

       Manipulate RDF statements which comprise three RDF::Redland::Node objects.  Also used for partial statements which can have empty parts and
       are used for matching statements in statement queries of the model - see the RDF::Redland::Model.

CONSTRUCTORS

       new NODE NODE NODE|STATEMENT
	   Create a new statement from nodes or copy an existing statement.

	   If three NODEs are given, make a new statement from them.  Each Node can be a Redland::RDF:Node, a Redland::RDF::URI, a perl URI or a
	   string literal.  Otherwise STATEMENT must be an existing statement to copy.

       clone
	   Copy a RDF::Redland::Statement.

METHODS

       subject [SUBJECT]
	   Get/set the statement subject.  When a RDF::Redland::Node SUBJECT is given, sets the subject of the statement, otherwise returns a
	   reference to the statement RDF::Redland::Node subject.

       predicate [PREDICATE]
	   Get/set the statement predicate.  When RDF::Redland::Node PREDICATE is given, sets the predicate of the statement, otherwise returns a
	   reference to the statement RDF::Redland::Node predicate.

       object [OBJECT]
	   Get/set the statement object.  When RDF::Redland::Node OBJECT is given, sets the object of the statement, otherwise returns a reference
	   to the statement RDF::Redland::Node object.

       as_string
	   Return the statement formatted as a string (UTF-8 encoded).

       equals STATEMENT
	   Return non zero if this statement is equal to STATEMENT

OLD METHODS

       new_from_nodes SUBJECT PREDICATE OBJECT
	   Create a new RDF::Redland::Statement with the given RDF::Redland::Node objects as parts (or undef when empty for a partial statement).
	   Use instead:

	     $a=new RDF::Redland::Statement($subject, $predicate, $object);

       new_from_statement STATEMENT
	   Create a new RDF::Redland::Statement object from RDF::Redland::Statement STATEMENT (copy constructor).  Use instead:

	     $s=$old_statement->clone;

SEE ALSO

       RDF::Redland::Node

AUTHOR

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

perl v5.14.2							    2011-02-04					      RDF::Redland::Statement(3pm)

RDF::Redland(3pm)					User Contributed Perl Documentation					 RDF::Redland(3pm)

NAME

       RDF::Redland - Redland RDF Class

SYNOPSIS

	 use RDF::Redland;
	 my $storage=new RDF::Redland::Storage("hashes", "test", "new='yes',hash-type='memory'");
	 my $model=new RDF::Redland::Model($storage, "");

	 ...

DESCRIPTION

       This class initialises the Redland RDF classes.

       See the main classes for full detail: RDF::Redland::Node, RDF::Redland::BlankNode, RDF::Redland::URINode, RDF::Redland::LiteralNode,
       RDF::Redland::XMLLiteralNode, RDF::Redland::URI, RDF::Redland::Statement, RDF::Redland::Model, RDF::Redland::Storage, RDF::Redland::Parser,
       RDF::Redland::Query, RDF::Redland::QueryResults, RDF::Redland::Iterator, RDF::Redland::Stream and RDF::Redland::RSS.

STATIC METHODS

       set_log_handler SUB
	   Set SUB as the subroutine to be called on any Redland error, warning or log message.  The subroutine must have the followign signature:

	     sub handler ($$$$$$$$$) {
	       my($code, $level, $facility, $message, $line, $column, $byte, $file, $uri)=@_;
	       # int error code
	       # int log level
	       # int facility causing the error (parsing, serializing, ...)
	       # string error message
	       # int line number (<0 if not relevant)
	       # int column number (<0 if not relevant)
	       # int byte number (<0 if not relevant)
	       # string file name or undef
	       # string URI or undef

	       # ...do something with the information ...
	     };

	     RDF::Redland::set_log_handler(&handler);

       reset_log_handler
	   Reset redland to use the default logging handler, typically printing the message to stdout or stderr and exiting on a fatal error.

       set_error_handler SUB
	   The method set_log_handler is much more flexible than this and includes this functionality.

	   Set SUB as the subroutine to be called on a Redland error with the error message as the single argument.  For example:

	     RDF::Redland::set_error_handler(sub {
	       my $msg=shift;
	       # Do something with $msg
	     });

	   The default if this is not set, is to run die $msg

       set_warning_handler SUB
	   The method set_log_handler is much more flexible than this and includes this functionality.

	   Set SUB as the subroutine to be called on a Redland warning with the warning message as the single argument.  For example:

	     RDF::Redland::set_warning_handler(sub {
	       my $msg=shift;
	       # Do something with $msg
	     });

	   The default if this is not set, is to run warn $msg

SEE ALSO

       RDF::Redland::Node, RDF::Redland::BlankNode, RDF::Redland::URINode, RDF::Redland::LiteralNode, RDF::Redland::XMLLiteralNode,
       RDF::Redland::URI, RDF::Redland::Statement, RDF::Redland::Model, RDF::Redland::Storage, RDF::Redland::Parser, RDF::Redland::Query,
       RDF::Redland::QueryResults, RDF::Redland::Iterator, RDF::Redland::Stream and RDF::Redland::RSS.

AUTHOR

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

perl v5.14.2							    2012-03-11							 RDF::Redland(3pm)