// newQueryPlan returns a new query plan ready to be excecuted.
func newQueryPlan(store storage.Store, stm *semantic.Statement) (*queryPlan, error) {
bs := []string{}
for _, b := range stm.Bindings() {
bs = append(bs, b)
}
t, err := table.New([]string{})
if err != nil {
return nil, err
}
var gs []storage.Graph
for _, g := range stm.Graphs() {
ng, err := store.Graph(g)
if err != nil {
return nil, err
}
gs = append(gs, ng)
}
return &queryPlan{
stm: stm,
store: store,
bndgs: bs,
grfs: gs,
grfsNames: stm.Graphs(),
cls: stm.SortedGraphPatternClauses(),
tbl: t,
}, nil
}
