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attempt to build more interesting SQL queries

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Subcommits:

fix old iterator, and flesh out new builder iterator

fix contains for builder iterator

Working replacement iterator
This commit is contained in:
Barak Michener 2015-07-15 18:29:55 -04:00
parent da391c3db7
commit 185e236f15
5 changed files with 712 additions and 4 deletions
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7
graph/sql/iterator.go
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@ -199,10 +199,12 @@ func (it *Iterator) Next() bool {
func (it *Iterator) Contains(v graph.Value) bool {
graph.ContainsLogIn(it, v)
if it.isAll {
it.result = v
return graph.ContainsLogOut(it, v, true)
}
q := v.(quad.Quad)
if q.Get(it.dir) == it.val.(string) {
it.result = v
return graph.ContainsLogOut(it, v, true)
}
return graph.ContainsLogOut(it, v, false)
@ -217,6 +219,9 @@ func (it *Iterator) Size() (int64, bool) {
}
func (it *Iterator) Result() graph.Value {
if it.result == nil {
glog.Fatalln("result was nil", it)
}
return it.result
}
@ -239,7 +244,7 @@ func (it *Iterator) Type() graph.Type {
return sqlType
}
func (it *Iterator) Sorted() bool { return true }
func (it *Iterator) Sorted() bool { return false }
func (it *Iterator) Optimize() (graph.Iterator, bool) { return it, false }
func (it *Iterator) Describe() graph.Description {