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Refactoring of Delta.IDs & horizon functionality with a PrimaryKey type, needed for implementing UUID based primary keys for backends such as the appengine datastore \n Tests: at top level and if available per backend, if not then just visual

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This commit is contained in:
panamafrancis 2014-12-01 23:00:06 +01:00
parent 26ceed35cc
commit abda6cbbb0
11 changed files with 135 additions and 44 deletions
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23
graph/memstore/quadstore.go
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@ -16,12 +16,14 @@ package memstore
import (
"fmt"
"time"
"github.com/barakmich/glog"
"github.com/google/cayley/graph"
"github.com/google/cayley/graph/iterator"
"github.com/google/cayley/graph/memstore/b"
"github.com/google/cayley/keys"
"github.com/google/cayley/quad"
)
@ -65,7 +67,10 @@ func (qdi QuadDirectionIndex) Get(d quad.Direction, id int64) (*b.Tree, bool) {
}
type LogEntry struct {
graph.Delta
ID int64
Quad quad.Quad
Action graph.Procedure
Timestamp time.Time
DeletedBy int64
}
@ -149,7 +154,11 @@ func (qs *QuadStore) AddDelta(d graph.Delta) error {
return graph.ErrQuadExists
}
qid := qs.nextQuadID
qs.log = append(qs.log, LogEntry{Delta: d})
qs.log = append(qs.log, LogEntry{
ID: d.ID.Int(),
Quad: d.Quad,
Action: d.Action,
Timestamp: d.Timestamp})
qs.size++
qs.nextQuadID++
@ -185,7 +194,11 @@ func (qs *QuadStore) RemoveDelta(d graph.Delta) error {
}
quadID := qs.nextQuadID
qs.log = append(qs.log, LogEntry{Delta: d})
qs.log = append(qs.log, LogEntry{
ID: d.ID.Int(),
Quad: d.Quad,
Action: d.Action,
Timestamp: d.Timestamp})
qs.log[prevQuadID].DeletedBy = quadID
qs.size--
qs.nextQuadID++
@ -205,8 +218,8 @@ func (qs *QuadStore) QuadIterator(d quad.Direction, value graph.Value) graph.Ite
return &iterator.Null{}
}
func (qs *QuadStore) Horizon() int64 {
return qs.log[len(qs.log)-1].ID
func (qs *QuadStore) Horizon() graph.PrimaryKey {
return keys.NewSequentialKey(qs.log[len(qs.log)-1].ID)
}
func (qs *QuadStore) Size() int64 {