Building Time Aware Applications in RDF


 
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Old 01-22-2009
Building Time Aware Applications in RDF

HPL-2009-6 Building Time Aware Applications in RDF - McBride, Brian
Keyword(s): semantic web, temporal RDF, temporal query, temporal modeling, temporal application.
Abstract: Several techniques for using RDF to model change over time in a domain are reviewed and a new approach with a lower triple count than previous approaches is described. It is argued that the application programmer requires tool support so that she does not have to deal with the details of the modelin ...
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RDF::Redland::Query(3pm)				User Contributed Perl Documentation				  RDF::Redland::Query(3pm)

NAME
RDF::Redland::Query - Redland RDF Syntax Query Class SYNOPSIS
use RDF::Redland; ... my $query=new RDF::Redland::Query($query_string); # default query language my $results=$query->execute($model); # or my $results=$model->query_execute($query); while(!$results->finished) { for (my $i=0; $i < $results->bindings_count(); $i++) { my $name=$results->binding_name($i); my $value=$results->binding_value($i); # ... do something with the results } $results->next_result; } DESCRIPTION
This class represents queries of various syntaxes over an RDF::Redland::Model returning a sequence of results that (currently) bind variable names to RDF::Redland::Node values. CONSTRUCTORS
new QUERY-STRING [BASE-URI [QUERY-LANG-URI [QUERY-LANG]]] Create a new RDF::Redland::Query object for a query string QUERY-STRING with optional base URI BASE-URI IN QUERY language QUERY-LANG or query language URI QUERY-LANG-URI (both can be undef). If QUERY-LANG-URI is omitted, the current directory is used as the base URI. If QUERY-LANG-NAME is undef, the default query language "rdql" is used. If BASE-URI is omitted, no base URI is used. METHODS
execute MODEL Run the query against model MODEL returning a RDF::Redland::QueryResults object or undef on failure. SEE ALSO
RDF::Redland::QueryResults AUTHOR
Dave Beckett - http://www.dajobe.org/ perl v5.14.2 2011-02-04 RDF::Redland::Query(3pm)