/**
* Transform the KiWiNode node into the datatype T. In case the node cannot be transformed to the
* respective datatype, throws an IllegalArgumentException that needs to be caught by the class
* carrying out the transformation.
*
* @param rdfBackend
* @param node
* @return
*/
@Override
public Date transform(RDFBackend<Node> rdfBackend, Node node, Map<String, String> configuration)
throws IllegalArgumentException {
if (rdfBackend.isLiteral(node)) {
return rdfBackend.dateTimeValue(node);
} else {
throw new IllegalArgumentException("could not parse node, because it is not a literal");
}
}
/**
* Apply the selector to the context node passed as argument and return the collection of selected
* nodes in appropriate order.
*
* @param context the node where to start the selection
* @param path the path leading to but not including the context node in the current evaluation of
* LDPath; may be null, in which case path tracking is disabled
* @param resultPaths a map where each of the result nodes maps to a path leading to the result
* node in the LDPath evaluation; if null, path tracking is disabled and the path argument is
* ignored
* @return the collection of selected nodes
*/
@Override
public Collection<Node> select(
RDFBackend<Node> rdfBackend,
Node context,
List<Node> path,
Map<Node, List<Node>> resultPaths) {
return Collections.singleton(rdfBackend.createLiteral(constant));
}