-
Notifications
You must be signed in to change notification settings - Fork 265
/
handle.go
84 lines (76 loc) · 2.32 KB
/
handle.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
// Copyright 2021 Matrix Origin
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package tables
import (
"github.com/matrixorigin/matrixone/pkg/vm/engine/tae/catalog"
"github.com/matrixorigin/matrixone/pkg/vm/engine/tae/common"
"github.com/matrixorigin/matrixone/pkg/vm/engine/tae/iface/data"
)
type tableHandle struct {
table *dataTable
object *aobject
appender data.ObjectAppender
}
func newHandle(table *dataTable, object *aobject) *tableHandle {
h := &tableHandle{
table: table,
object: object,
}
if object != nil {
h.appender, _ = object.MakeAppender()
}
return h
}
func (h *tableHandle) SetAppender(id *common.ID) (appender data.ObjectAppender) {
tableMeta := h.table.meta
objMeta, _ := tableMeta.GetObjectByID(id.ObjectID())
h.object = objMeta.GetObjectData().(*aobject)
h.appender, _ = h.object.MakeAppender()
h.object.Ref()
return h.appender
}
func (h *tableHandle) ThrowAppenderAndErr() (appender data.ObjectAppender, err error) {
err = data.ErrAppendableObjectNotFound
h.object = nil
h.appender = nil
return
}
func (h *tableHandle) GetAppender() (appender data.ObjectAppender, err error) {
var objEntry *catalog.ObjectEntry
if h.appender == nil {
objEntry = h.table.meta.LastAppendableObject()
if objEntry == nil {
err = data.ErrAppendableObjectNotFound
return
}
h.object = objEntry.GetObjectData().(*aobject)
h.appender, err = h.object.MakeAppender()
if err != nil {
panic(err)
}
}
dropped := h.object.meta.HasDropCommitted()
if !h.appender.IsAppendable() || !h.object.IsAppendable() || dropped {
return h.ThrowAppenderAndErr()
}
h.object.Ref()
// Similar to optimistic locking
dropped = h.object.meta.HasDropCommitted()
if !h.appender.IsAppendable() || !h.object.IsAppendable() || dropped {
h.object.Unref()
return h.ThrowAppenderAndErr()
}
appender = h.appender
return
}