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store less duplicate data in the indices

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This commit is contained in:
Barak Michener 2014-08-14 00:37:20 -04:00
parent 69e4f087f8
commit c94cd2a53a
1 changed files with 16 additions and 6 deletions
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22
graph/bolt/quadstore.go
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@ -121,8 +121,8 @@ func (qs *QuadStore) Horizon() int64 {
return qs.horizon
}
func (qa *QuadStore) createDeltaKeyFor(d *graph.Delta) []byte {
return []byte(fmt.Sprintf("%018x", d.ID))
func (qs *QuadStore) createDeltaKeyFor(id int64) []byte {
return []byte(fmt.Sprintf("%018x", id))
}
func bucketFor(d [4]quad.Direction) []byte {
@ -147,7 +147,6 @@ func (qs *QuadStore) createValueKeyFor(s string) []byte {
}
type IndexEntry struct {
quad.Quad
History []int64
}
@ -181,7 +180,7 @@ func (qs *QuadStore) ApplyDeltas(deltas []*graph.Delta) error {
return err
}
b = tx.Bucket(logBucket)
err = b.Put(qs.createDeltaKeyFor(d), bytes)
err = b.Put(qs.createDeltaKeyFor(d.ID), bytes)
if err != nil {
return err
}
@ -235,8 +234,6 @@ func (qs *QuadStore) buildQuadWrite(tx *bolt.Tx, q quad.Quad, id int64, isAdd bo
if err != nil {
return err
}
} else {
entry.Quad = q
}
if isAdd && len(entry.History)%2 == 1 {
@ -342,12 +339,25 @@ func (qs *QuadStore) Close() {
}
func (qs *QuadStore) Quad(k graph.Value) quad.Quad {
var in IndexEntry
var q quad.Quad
tok := k.(*Token)
err := qs.db.View(func(tx *bolt.Tx) error {
b := tx.Bucket(tok.bucket)
data := b.Get(tok.key)
if data == nil {
return nil
}
err := json.Unmarshal(data, &in)
if err != nil {
return err
}
if len(in.History) == 0 {
return nil
}
b = tx.Bucket(logBucket)
data = b.Get(qs.createDeltaKeyFor(in.History[len(in.History)-1]))
if data == nil {
// No harm, no foul.
return nil
}