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Implement key deletion.

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This commit is contained in:
Andrey Smirnov
2014-01-17 00:28:10 +04:00
parent 311c8ca6ad
commit bbec7ef948
2 changed files with 21 additions and 0 deletions
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5
database/leveldb.go
View File

@@ -18,6 +18,7 @@ var (
type Storage interface {
Get(key []byte) ([]byte, error)
Put(key []byte, value []byte) error
Delete(key []byte) error
FetchByPrefix(prefix []byte) [][]byte
Close() error
}
@@ -60,6 +61,10 @@ func (l *levelDB) Put(key []byte, value []byte) error {
return l.db.Put(key, value, nil)
}
func (l *levelDB) Delete(key []byte) error {
return l.db.Delete(key, nil)
}
func (l *levelDB) FetchByPrefix(prefix []byte) [][]byte {
result := make([][]byte, 0, 20)

16
database/leveldb_test.go
View File

@@ -45,6 +45,22 @@ func (s *LevelDBSuite) TestGetPut(c *C) {
c.Assert(result, DeepEquals, value)
}
func (s *LevelDBSuite) TestDelete(c *C) {
var (
key = []byte("key")
value = []byte("value")
)
err := s.db.Put(key, value)
c.Assert(err, IsNil)
err = s.db.Delete(key)
c.Assert(err, IsNil)
_, err = s.db.Get(key)
c.Assert(err, ErrorMatches, "key not found")
}
func (s *LevelDBSuite) TestFetchByPrefix(c *C) {
c.Check(s.db.FetchByPrefix([]byte{0x80}), DeepEquals, [][]byte{})