map default namespace try

db_test.go

@@ -94,24 +94,6 @@ func TestImplementations(t *testing.T) {
 		cases = append(cases, leveldb)
 	}
 
-	riakLN, err := net.Listen("tcp", "localhost:8087")
-	if err == nil {
-		defer riakLN.Close()
-		go func() {
-			for {
-				conn, err := riakLN.Accept()
-				if err == nil {
-					conn.Close()
-				}
-			}
-		}()
-	}
-	if riak, err := NewRiak("localhost:8087"); err != nil {
-		t.Logf("cannot make riak: %v", err)
-	} else {
-		cases = append(cases, riak)
-	}
-
 	mongoLN, err := net.Listen("tcp", "localhost:27017")
 	if err == nil {
 		defer mongoLN.Close()

leveldb.go

@@ -68,8 +68,13 @@ func (ldb *LevelDB) Get(key string, ns ...string) ([]byte, error) {
 
 func (ldb *LevelDB) Set(key string, value []byte, ns ...string) error {
 	namespace := resolveNamespace(ns)
+	key = path.Join(namespace, key)
 	batch := &leveldb.Batch{}
-	batch.Put([]byte(path.Join(namespace, key)), value)
+	if value != nil {
+		batch.Put([]byte(key), value)
+	} else {
+		batch.Delete([]byte(key))
+	}
 	return ldb.db.Write(batch, nil)
 }
 

map.go

@@ -33,10 +33,11 @@ func (m *Map) List(ns []string, limits ...string) ([]string, error) {
 	limits = resolveLimits(limits)
 
 	keys := []string{}
-	if _, ok := (*m)[namespace]; !ok {
+	n, _ := (*m)[DefaultNamespace]
-		return nil, nil
+	if v, ok := (*m)[namespace]; ok {
+		n = v
 	}
-	for k := range (*m)[namespace] {
+	for k := range n {
 		if k >= limits[0] && k <= limits[1] {
 			keys = append(keys, k)
 		}