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Replace string type with graph.Direction

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This conversion is not complete as there are still uses of string
directions via the Direction.String method in leveldb.
This commit is contained in:
kortschak 2014-06-30 12:33:55 +09:30
parent cd11053c98
commit 0a03cec497
21 changed files with 340 additions and 298 deletions
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50
graph/leveldb/iterator.go
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@ -29,7 +29,7 @@ type Iterator struct {
graph.BaseIterator
nextPrefix []byte
checkId []byte
dir string
dir graph.Direction
open bool
it iterator.Iterator
ts *TripleStore
@ -37,11 +37,11 @@ type Iterator struct {
originalPrefix string
}
func NewIterator(prefix, dir string, value graph.TSVal, ts *TripleStore) *Iterator {
func NewIterator(prefix string, d graph.Direction, value graph.TSVal, ts *TripleStore) *Iterator {
var it Iterator
graph.BaseIteratorInit(&it.BaseIterator)
it.checkId = value.([]byte)
it.dir = dir
it.dir = d
it.originalPrefix = prefix
it.nextPrefix = make([]byte, 0, 2+ts.hasher.Size())
it.nextPrefix = append(it.nextPrefix, []byte(prefix)...)
@ -113,56 +113,56 @@ func (it *Iterator) Next() (graph.TSVal, bool) {
return nil, false
}
func GetPositionFromPrefix(prefix []byte, dir string, ts *TripleStore) int {
func GetPositionFromPrefix(prefix []byte, d graph.Direction, ts *TripleStore) int {
if bytes.Equal(prefix, []byte("sp")) {
switch dir {
case "s":
switch d {
case graph.Subject:
return 2
case "p":
case graph.Predicate:
return ts.hasher.Size() + 2
case "o":
case graph.Object:
return 2*ts.hasher.Size() + 2
case "c":
case graph.Provenance:
return -1
}
}
if bytes.Equal(prefix, []byte("po")) {
switch dir {
case "s":
switch d {
case graph.Subject:
return 2*ts.hasher.Size() + 2
case "p":
case graph.Predicate:
return 2
case "o":
case graph.Object:
return ts.hasher.Size() + 2
case "c":
case graph.Provenance:
return -1
}
}
if bytes.Equal(prefix, []byte("os")) {
switch dir {
case "s":
switch d {
case graph.Subject:
return ts.hasher.Size() + 2
case "p":
case graph.Predicate:
return 2*ts.hasher.Size() + 2
case "o":
case graph.Object:
return 2
case "c":
case graph.Provenance:
return -1
}
}
if bytes.Equal(prefix, []byte("cp")) {
switch dir {
case "s":
switch d {
case graph.Subject:
return 2*ts.hasher.Size() + 2
case "p":
case graph.Predicate:
return ts.hasher.Size() + 2
case "o":
case graph.Object:
return 3*ts.hasher.Size() + 2
case "c":
case graph.Provenance:
return 2
}
}
panic("Notreached")
panic("unreachable")
}
func (it *Iterator) Check(v graph.TSVal) bool {