// addTriples add all the retrieved triples from the graphs into the results
// table. The semantic graph clause is also passed to be able to identify what
// bindings to set.
func addTriples(ts <-chan *triple.Triple, cls *semantic.GraphClause, tbl *table.Table) error {
for t := range ts {
if cls.PID != "" {
// The triples need to be filtered.
if string(t.Predicate().ID()) != cls.PID {
continue
}
if cls.PTemporal {
if t.Predicate().Type() != predicate.Temporal {
continue
}
ta, err := t.Predicate().TimeAnchor()
if err != nil {
return fmt.Errorf("failed to retrieve time anchor from time predicate in triple %s with error %v", t, err)
}
// Need to check teh bounds of the triple.
if cls.PLowerBound != nil && cls.PLowerBound.After(*ta) {
continue
}
if cls.PUpperBound != nil && cls.PUpperBound.Before(*ta) {
continue
}
}
}
if cls.OID != "" {
if p, err := t.Object().Predicate(); err == nil {
// The triples need to be filtered.
if string(p.ID()) != cls.OID {
continue
}
if cls.OTemporal {
if p.Type() != predicate.Temporal {
continue
}
ta, err := p.TimeAnchor()
if err != nil {
return fmt.Errorf("failed to retrieve time anchor from time predicate in triple %s with error %v", t, err)
}
// Need to check teh bounds of the triple.
if cls.OLowerBound != nil && cls.OLowerBound.After(*ta) {
continue
}
if cls.OUpperBound != nil && cls.OUpperBound.Before(*ta) {
continue
}
}
}
}
r, err := tripleToRow(t, cls)
if err != nil {
return err
}
if r != nil {
tbl.AddRow(r)
}
}
return nil
}
// addTriples add all the retrieved triples from the graphs into the results
// table. The semantic graph clause is also passed to be able to identify what
// bindings to set.
func addTriples(ts storage.Triples, cls *semantic.GraphClause, tbl *table.Table) error {
for t := range ts {
r, err := tripleToRow(t, cls)
if err != nil {
return err
}
tbl.AddRow(r)
}
return nil
}
