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convert to prefix byte

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This commit is contained in:
Barak Michener 2014-07-03 13:32:58 -04:00
parent 7b87e08e89
commit 50bd7d04ef
2 changed files with 9 additions and 9 deletions
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4
graph/leveldb/triplestore.go
View file

@ -114,7 +114,7 @@ func (ts *TripleStore) Size() int64 {
func (ts *TripleStore) createKeyFor(d [3]graph.Direction, triple *graph.Triple) []byte {
key := make([]byte, 0, 2+(ts.hasher.Size()*3))
// TODO(kortschak) Remove dependence on String() method.
key = append(key, []byte(d[0].Prefix()+d[1].Prefix())...)
key = append(key, []byte{d[0].Prefix(), d[1].Prefix()}...)
key = append(key, ts.convertStringToByteHash(triple.Get(d[0]))...)
key = append(key, ts.convertStringToByteHash(triple.Get(d[1]))...)
key = append(key, ts.convertStringToByteHash(triple.Get(d[2]))...)
@ -124,7 +124,7 @@ func (ts *TripleStore) createKeyFor(d [3]graph.Direction, triple *graph.Triple)
func (ts *TripleStore) createProvKeyFor(d [3]graph.Direction, triple *graph.Triple) []byte {
key := make([]byte, 0, 2+(ts.hasher.Size()*4))
// TODO(kortschak) Remove dependence on String() method.
key = append(key, []byte(graph.Provenance.Prefix()+d[0].Prefix())...)
key = append(key, []byte{graph.Provenance.Prefix(), d[0].Prefix()}...)
key = append(key, ts.convertStringToByteHash(triple.Get(graph.Provenance))...)
key = append(key, ts.convertStringToByteHash(triple.Get(d[0]))...)
key = append(key, ts.convertStringToByteHash(triple.Get(d[1]))...)

14
graph/triple.go
View file

@ -60,20 +60,20 @@ const (
Provenance
)
func (d Direction) Prefix() string {
func (d Direction) Prefix() byte {
switch d {
case Any:
return "a"
return 'a'
case Subject:
return "s"
return 's'
case Predicate:
return "p"
return 'p'
case Provenance:
return "c"
return 'c'
case Object:
return "o"
return 'o'
default:
return fmt.Sprint("illegal direction:", byte(d))
return '\x00'
}
}