Elements

Elements

SPARQL elements are created using various static factory classes. Most core elements of a query are created by the static Spanqit class:

Variable price = Spanqit.var("price");
System.out.println(price.getQueryString());
// ==> ?price

Prefix foaf = Spanqit.prefix("foaf", iri("http://xmlns.com/foaf/0.1/"));
System.out.println(foaf.getQueryString());
// ==> PREFIX foaf: <http://xmlns.com/foaf/0.1/>

Other factory classes include the Queries class mentioned in the previous section, as well as the Expressions, GraphPatterns, and Rdf classes.

Hint: All query elements created by Spanqit implement the QueryElement interface, which provides the getQueryString() method. This can be used to get the String representing the SPARQL syntax of any element.

Create Graph Patterns >