func (n *node) init(tx *bolt.Tx, cfg *structConfig) error {
bucket, err := n.CreateBucketIfNotExists(tx, cfg.Name)
if err != nil {
return err
}
// save node configuration in the bucket
_, err = newMeta(bucket, n)
if err != nil {
return err
}
for fieldName, fieldCfg := range cfg.Fields {
if fieldCfg.Index == "" {
continue
}
switch fieldCfg.Index {
case tagUniqueIdx:
_, err = index.NewUniqueIndex(bucket, []byte(indexPrefix+fieldName))
case tagIdx:
_, err = index.NewListIndex(bucket, []byte(indexPrefix+fieldName))
default:
err = ErrIdxNotFound
}
if err != nil {
return err
}
}
return nil
}
func getIndex(bucket *bolt.Bucket, idxKind string, fieldName string) (index.Index, error) {
var idx index.Index
var err error
switch idxKind {
case tagUniqueIdx:
idx, err = index.NewUniqueIndex(bucket, []byte(indexPrefix+fieldName))
case tagIdx:
idx, err = index.NewListIndex(bucket, []byte(indexPrefix+fieldName))
default:
err = ErrIdxNotFound
}
return idx, err
}
func TestUniqueIndex(t *testing.T) {
dir, _ := ioutil.TempDir(os.TempDir(), "storm")
defer os.RemoveAll(dir)
db, _ := storm.Open(filepath.Join(dir, "storm.db"))
defer db.Close()
err := db.Bolt.Update(func(tx *bolt.Tx) error {
b, err := tx.CreateBucket([]byte("test"))
assert.NoError(t, err)
idx, err := index.NewUniqueIndex(b, []byte("uindex1"))
assert.NoError(t, err)
err = idx.Add([]byte("hello"), []byte("id1"))
assert.NoError(t, err)
err = idx.Add([]byte("hello"), []byte("id1"))
assert.NoError(t, err)
err = idx.Add([]byte("hello"), []byte("id2"))
assert.Error(t, err)
assert.Equal(t, index.ErrAlreadyExists, err)
err = idx.Add(nil, []byte("id2"))
assert.Error(t, err)
assert.Equal(t, index.ErrNilParam, err)
err = idx.Add([]byte("hi"), nil)
assert.Error(t, err)
assert.Equal(t, index.ErrNilParam, err)
id := idx.Get([]byte("hello"))
assert.Equal(t, []byte("id1"), id)
id = idx.Get([]byte("goodbye"))
assert.Nil(t, id)
err = idx.Remove([]byte("hello"))
assert.NoError(t, err)
err = idx.Remove(nil)
assert.NoError(t, err)
id = idx.Get([]byte("hello"))
assert.Nil(t, id)
err = idx.Add([]byte("hello"), []byte("id1"))
assert.NoError(t, err)
err = idx.Add([]byte("hi"), []byte("id2"))
assert.NoError(t, err)
err = idx.Add([]byte("yo"), []byte("id3"))
assert.NoError(t, err)
list, err := idx.AllRecords(nil)
assert.NoError(t, err)
assert.Len(t, list, 3)
opts := index.NewOptions()
opts.Limit = 2
list, err = idx.AllRecords(opts)
assert.NoError(t, err)
assert.Len(t, list, 2)
opts = index.NewOptions()
opts.Skip = 2
list, err = idx.AllRecords(opts)
assert.NoError(t, err)
assert.Len(t, list, 1)
assert.Equal(t, []byte("id3"), list[0])
opts = index.NewOptions()
opts.Skip = 2
opts.Limit = 1
opts.Reverse = true
list, err = idx.AllRecords(opts)
assert.NoError(t, err)
assert.Len(t, list, 1)
assert.Equal(t, []byte("id1"), list[0])
err = idx.RemoveID([]byte("id2"))
assert.NoError(t, err)
id = idx.Get([]byte("hello"))
assert.Equal(t, []byte("id1"), id)
id = idx.Get([]byte("hi"))
assert.Nil(t, id)
id = idx.Get([]byte("yo"))
assert.Equal(t, []byte("id3"), id)
ids, err := idx.All([]byte("yo"), nil)
assert.NoError(t, err)
assert.Len(t, ids, 1)
assert.Equal(t, []byte("id3"), ids[0])
err = idx.RemoveID([]byte("id2"))
assert.NoError(t, err)
err = idx.RemoveID([]byte("id4"))
assert.NoError(t, err)
return nil
})
assert.NoError(t, err)
}
func TestUniqueIndexRange(t *testing.T) {
dir, _ := ioutil.TempDir(os.TempDir(), "storm")
defer os.RemoveAll(dir)
db, _ := storm.Open(filepath.Join(dir, "storm.db"))
defer db.Close()
db.Bolt.Update(func(tx *bolt.Tx) error {
b, err := tx.CreateBucket([]byte("test"))
assert.NoError(t, err)
idx, err := index.NewUniqueIndex(b, []byte("uindex1"))
assert.NoError(t, err)
for i := 0; i < 10; i++ {
val, _ := gob.Codec.Marshal(i)
err = idx.Add(val, val)
assert.NoError(t, err)
}
min, _ := gob.Codec.Marshal(3)
max, _ := gob.Codec.Marshal(5)
list, err := idx.Range(min, max, nil)
assert.Len(t, list, 3)
assert.NoError(t, err)
assertEncodedIntListEqual(t, []int{3, 4, 5}, list)
min, _ = gob.Codec.Marshal(11)
max, _ = gob.Codec.Marshal(20)
list, err = idx.Range(min, max, nil)
assert.Len(t, list, 0)
assert.NoError(t, err)
min, _ = gob.Codec.Marshal(7)
max, _ = gob.Codec.Marshal(2)
list, err = idx.Range(min, max, nil)
assert.Len(t, list, 0)
assert.NoError(t, err)
min, _ = gob.Codec.Marshal(-5)
max, _ = gob.Codec.Marshal(2)
list, err = idx.Range(min, max, nil)
assert.Len(t, list, 0)
assert.NoError(t, err)
min, _ = gob.Codec.Marshal(3)
max, _ = gob.Codec.Marshal(7)
opts := index.NewOptions()
opts.Skip = 2
list, err = idx.Range(min, max, opts)
assert.Len(t, list, 3)
assert.NoError(t, err)
assertEncodedIntListEqual(t, []int{5, 6, 7}, list)
opts = index.NewOptions()
opts.Limit = 2
list, err = idx.Range(min, max, opts)
assert.Len(t, list, 2)
assert.NoError(t, err)
assertEncodedIntListEqual(t, []int{3, 4}, list)
opts = index.NewOptions()
opts.Reverse = true
opts.Skip = 2
opts.Limit = 2
list, err = idx.Range(min, max, opts)
assert.Len(t, list, 2)
assert.NoError(t, err)
assertEncodedIntListEqual(t, []int{5, 4}, list)
return nil
})
}