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dbIt to iter

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This commit is contained in:
Barak Michener 2014-07-03 15:59:50 -04:00
parent 82f3fc7bfa
commit 468d943039
2 changed files with 28 additions and 28 deletions
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28
graph/leveldb/all_iterator.go
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@ -30,7 +30,7 @@ type AllIterator struct {
prefix []byte
dir string
open bool
dbIt iterator.Iterator
iter iterator.Iterator
ts *TripleStore
ro *opt.ReadOptions
}
@ -40,28 +40,28 @@ func NewAllIterator(prefix, dir string, ts *TripleStore) *AllIterator {
graph.BaseIteratorInit(&it.BaseIterator)
it.ro = &opt.ReadOptions{}
it.ro.DontFillCache = true
it.dbIt = ts.db.NewIterator(nil, it.ro)
it.iter = ts.db.NewIterator(nil, it.ro)
it.prefix = []byte(prefix)
it.dir = dir
it.open = true
it.ts = ts
it.dbIt.Seek(it.prefix)
if !it.dbIt.Valid() {
it.iter.Seek(it.prefix)
if !it.iter.Valid() {
it.open = false
it.dbIt.Release()
it.iter.Release()
}
return &it
}
func (it *AllIterator) Reset() {
if !it.open {
it.dbIt = it.ts.db.NewIterator(nil, it.ro)
it.iter = it.ts.db.NewIterator(nil, it.ro)
it.open = true
}
it.dbIt.Seek(it.prefix)
if !it.dbIt.Valid() {
it.iter.Seek(it.prefix)
if !it.iter.Valid() {
it.open = false
it.dbIt.Release()
it.iter.Release()
}
}
@ -77,10 +77,10 @@ func (it *AllIterator) Next() (graph.TSVal, bool) {
return nil, false
}
var out []byte
out = make([]byte, len(it.dbIt.Key()))
copy(out, it.dbIt.Key())
it.dbIt.Next()
if !it.dbIt.Valid() {
out = make([]byte, len(it.iter.Key()))
copy(out, it.iter.Key())
it.iter.Next()
if !it.iter.Valid() {
it.Close()
}
if !bytes.HasPrefix(out, it.prefix) {
@ -98,7 +98,7 @@ func (it *AllIterator) Check(v graph.TSVal) bool {
func (it *AllIterator) Close() {
if it.open {
it.dbIt.Release()
it.iter.Release()
it.open = false
}
}