/** * Retrieve a property value as a String for the supplied subject from the given model. If more * than one property value exists, any one value is picked and returned. * * @param m * the model from which to retrieve an object value. * @param subject * the subject resource for which to retrieve a property literal value. * @param property * the property for which to retrieve a value. * @param contexts * the contexts from which to retrieve the property value. Optional vararg argument. If not * specified the operations works on the entire Model. * @return a property value String from the given model, or {@link Optional#empty()} if no such value exists. */ public static Optional<String> getPropertyString(Model m, Resource subject, IRI property, Resource... contexts) { Objects.requireNonNull(m, "model may not be null"); Objects.requireNonNull(subject, "subject may not be null"); Objects.requireNonNull(property, "property may not be null"); return objectString(m.filter(subject, property, null, contexts)); }
/** * Retrieve a property value as a String for the supplied subject from the given model. If more * than one property value exists, any one value is picked and returned. * * @param m * the model from which to retrieve an object value. * @param subject * the subject resource for which to retrieve a property literal value. * @param property * the property for which to retrieve a value. * @param contexts * the contexts from which to retrieve the property value. Optional vararg argument. If not * specified the operations works on the entire Model. * @return a property value String from the given model, or {@link Optional#empty()} if no such value exists. */ public static Optional<String> getPropertyString(Model m, Resource subject, IRI property, Resource... contexts) { Objects.requireNonNull(m, "model may not be null"); Objects.requireNonNull(subject, "subject may not be null"); Objects.requireNonNull(property, "property may not be null"); return objectString(m.filter(subject, property, null, contexts)); }