func (it *Iterator) Check(v graph.TSVal) bool {
graph.CheckLogIn(it, v)
if it.tree.Has(Int64(v.(int64))) {
it.Last = v
return graph.CheckLogOut(it, v, true)
}
return graph.CheckLogOut(it, v, false)
}
// Check a value against the entire graph.iterator, in order.
func (it *Or) Check(val graph.TSVal) bool {
graph.CheckLogIn(it, val)
anyGood := it.checkSubIts(val)
if !anyGood {
return graph.CheckLogOut(it, val, false)
}
it.Last = val
return graph.CheckLogOut(it, val, true)
}
// Check() for an Int64 is merely seeing if the passed value is
// withing the range, assuming the value is an int64.
func (it *Int64) Check(tsv graph.Value) bool {
graph.CheckLogIn(it, tsv)
v := tsv.(int64)
if it.min <= v && v <= it.max {
it.Last = v
return graph.CheckLogOut(it, v, true)
}
return graph.CheckLogOut(it, v, false)
}
// If it checks in the right direction for the subiterator, it is a valid link
// for the LinksTo.
func (it *LinksTo) Check(val graph.Value) bool {
graph.CheckLogIn(it, val)
node := it.ts.TripleDirection(val, it.dir)
if it.primaryIt.Check(node) {
it.Last = val
return graph.CheckLogOut(it, val, true)
}
return graph.CheckLogOut(it, val, false)
}
// Check a value against our internal iterator. In order to do this, we must first open a new
// iterator of "triples that have `val` in our direction", given to us by the triple store,
// and then Next() values out of that iterator and Check() them against our subiterator.
func (it *HasA) Check(val graph.TSVal) bool {
graph.CheckLogIn(it, val)
if glog.V(4) {
glog.V(4).Infoln("Id is", it.ts.GetNameFor(val))
}
// TODO(barakmich): Optimize this
if it.resultIt != nil {
it.resultIt.Close()
}
it.resultIt = it.ts.GetTripleIterator(it.dir, val)
return graph.CheckLogOut(it, val, it.GetCheckResult())
}
// Check if the passed value is equal to one of the values stored in the iterator.
func (it *Fixed) Check(v graph.TSVal) bool {
// Could be optimized by keeping it sorted or using a better datastructure.
// However, for fixed iterators, which are by definition kind of tiny, this
// isn't a big issue.
graph.CheckLogIn(it, v)
for _, x := range it.values {
if it.cmp(x, v) {
it.Last = x
return graph.CheckLogOut(it, v, true)
}
}
return graph.CheckLogOut(it, v, false)
}
// Check a value against the entire iterator, in order.
func (it *And) Check(val graph.TSVal) bool {
graph.CheckLogIn(it, val)
if it.checkList != nil {
return it.checkCheckList(val)
}
mainGood := it.primaryIt.Check(val)
if !mainGood {
return graph.CheckLogOut(it, val, false)
}
othersGood := it.checkSubIts(val)
if !othersGood {
return graph.CheckLogOut(it, val, false)
}
it.Last = val
return graph.CheckLogOut(it, val, true)
}
func (it *Iterator) Check(v graph.TSVal) bool {
graph.CheckLogIn(it, v)
if it.isAll {
it.Last = v
return graph.CheckLogOut(it, v, true)
}
var offset int
switch it.dir {
case graph.Subject:
offset = 0
case graph.Predicate:
offset = (it.ts.hasher.Size() * 2)
case graph.Object:
offset = (it.ts.hasher.Size() * 2) * 2
case graph.Provenance:
offset = (it.ts.hasher.Size() * 2) * 3
}
val := v.(string)[offset : it.ts.hasher.Size()*2+offset]
if val == it.hash {
it.Last = v
return graph.CheckLogOut(it, v, true)
}
return graph.CheckLogOut(it, v, false)
}