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体验新版 GitCode,发现更多精彩内容 >>
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6651f162
编写于
6月 17, 2022
作者:
O
openharmony_ci
提交者:
Gitee
6月 17, 2022
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!5526 【轻量级 PR】:3.1Release分支:updatejs-apis-data-distributedobject.md:自动化测试问题修改+添加模块简介:需同步翻译
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zh-cn/application-dev/reference/apis/js-apis-data-distributedobject.md
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# 分布式数据对象
本模块提供管理基本数据对象的相关能力,包括创建、查询、删除、修改、订阅等;同时支持相同应用多设备间的分布式数据对象协同能力。
> **说明:**
>
> 本模块首批接口从API version 8开始支持。后续版本的新增接口,采用上角标单独标记接口的起始版本。
...
...
@@ -38,7 +41,7 @@ createDistributedObject(source: object): DistributedObject
```
## distributedObject.genSessionId
()
## distributedObject.genSessionId
genSessionId(): string
...
...
@@ -110,19 +113,19 @@ on(type: 'change', callback: Callback<{ sessionId: string, fields: Array<stri
| callback | Callback
<
{
sessionId:
string
,
fields:
Array
&
lt
;
string
&
gt
;
}
>
| 是 | 变更回调对象实例。
<br>
sessionId:标识变更对象的sessionId;
<br>
fields:标识对象变更的属性名。 |
**示例:**
```
js
import
distributedObject
from
'
@ohos.data.distributedDataObject
'
;
var
g_object
=
distributedObject
.
createDistributedObject
({
name
:
"
Amy
"
,
age
:
18
,
isVis
:
false
,
parent
:{
mother
:
"
jack mom
"
,
father
:
"
jack Dad
"
}});
g_object
.
on
(
"
change
"
,
function
(
sessionId
,
changeData
)
{
console
.
info
(
"
change
"
+
sessionId
);
if
(
changeData
!=
null
&&
changeData
!=
undefined
)
{
changeData
.
forEach
(
element
=>
{
console
.
info
(
"
changed !
"
+
element
+
"
"
+
g_object
[
element
]
);
});
}
}
);
```
```
js
import
distributedObject
from
'
@ohos.data.distributedDataObject
'
;
var
g_object
=
distributedObject
.
createDistributedObject
({
name
:
"
Amy
"
,
age
:
18
,
isVis
:
false
,
parent
:{
mother
:
"
jack mom
"
,
father
:
"
jack Dad
"
}});
globalThis
.
changeCallback
=
(
sessionId
,
changeData
)
=>
{
console
.
info
(
"
change
"
+
sessionId
);
if
(
changeData
!=
null
&&
changeData
!=
undefined
)
{
changeData
.
forEach
(
element
=>
{
console
.
info
(
"
changed !
"
+
element
+
"
"
+
g_object
[
element
]);
}
);
}
}
g_object
.
on
(
"
change
"
,
globalThis
.
changeCallback
);
```
### off('change')
...
...
@@ -140,20 +143,14 @@ off(type: 'change', callback?: Callback<{ sessionId: string, fields: Array<st
**示例:**
```
js
import
distributedObject
from
'
@ohos.data.distributedDataObject
'
;
var
g_object
=
distributedObject
.
createDistributedObject
({
name
:
"
Amy
"
,
age
:
18
,
isVis
:
false
,
parent
:{
mother
:
"
jack mom
"
,
father
:
"
jack Dad
"
}});
g_object
.
on
(
"
change
"
,
function
(
sessionId
,
changeData
)
{
console
.
info
(
"
change
"
+
sessionId
);
});
//删除数据变更回调changeCallback
g_object
.
off
(
"
change
"
,
function
(
sessionId
,
changeData
)
{
console
.
info
(
"
change
"
+
sessionId
);
});
//删除所有的数据变更回调
g_object
.
off
(
"
change
"
);
```
```
js
import
distributedObject
from
'
@ohos.data.distributedDataObject
'
;
var
g_object
=
distributedObject
.
createDistributedObject
({
name
:
"
Amy
"
,
age
:
18
,
isVis
:
false
,
parent
:{
mother
:
"
jack mom
"
,
father
:
"
jack Dad
"
}});
//删除数据变更回调changeCallback
g_object
.
off
(
"
change
"
,
globalThis
.
changeCallback
);
//删除所有的数据变更回调
g_object
.
off
(
"
change
"
);
```
### on('status')
...
...
@@ -170,14 +167,14 @@ on(type: 'status', callback: Callback<{ sessionId: string, networkId: string, st
| callback | Callback
<
{
sessionId:
string
,
networkId:
string
,
status:
'
online
'
\|
'
offline
'
}
>
| 是 | 监听上下线回调实例。
<br>
sessionId:标识变更对象的sessionId;
<br>
networkId:标识对象设备的networkId;
<br>
status:标识对象为'online'(上线)或'offline'(下线)的状态。 |
**示例:**
```
js
import
distributedObject
from
'
@ohos.data.distributedDataObject
'
;
var
g_object
=
distributedObject
.
createDistributedObject
({
name
:
"
Amy
"
,
age
:
18
,
isVis
:
false
,
parent
:{
mother
:
"
jack mom
"
,
father
:
"
jack Dad
"
}})
;
g_object
.
on
(
"
status
"
,
function
(
sessionId
,
networkId
,
status
)
{
this
.
response
+=
"
status changed
"
+
sessionId
+
"
"
+
status
+
"
"
+
networkId
;
}
);
```
```
js
import
distributedObject
from
'
@ohos.data.distributedDataObject
'
;
globalThis
.
statusCallback
=
(
sessionId
,
networkId
,
status
)
=>
{
globalThis
.
response
+=
"
status changed
"
+
sessionId
+
"
"
+
status
+
"
"
+
networkId
;
}
var
g_object
=
distributedObject
.
createDistributedObject
({
name
:
"
Amy
"
,
age
:
18
,
isVis
:
false
,
parent
:{
mother
:
"
jack mom
"
,
father
:
"
jack Dad
"
}})
;
g_object
.
on
(
"
status
"
,
globalThis
.
statusCallback
);
```
### off('status')
...
...
@@ -196,15 +193,14 @@ off(type: 'status', callback?: Callback<{ sessionId: string, deviceId: string, s
**示例:**
```
js
import
distributedObject
from
'
@ohos.data.distributedDataObject
'
;
g_object
.
on
(
"
status
"
,
function
(
sessionId
,
networkId
,
status
)
{
this
.
response
+=
"
status changed
"
+
sessionId
+
"
"
+
status
+
"
"
+
networkId
;
});
//删除上下线回调changeCallback
g_object
.
off
(
"
status
"
,
function
(
sessionId
,
networkId
,
status
)
{
this
.
response
+=
"
status changed
"
+
sessionId
+
"
"
+
status
+
"
"
+
networkId
;
});
//删除所有的上下线回调
g_object
.
off
(
"
status
"
);
```
```
js
import
distributedObject
from
'
@ohos.data.distributedDataObject
'
;
var
g_object
=
distributedObject
.
createDistributedObject
({
name
:
"
Amy
"
,
age
:
18
,
isVis
:
false
,
parent
:{
mother
:
"
jack mom
"
,
father
:
"
jack Dad
"
}});
globalThis
.
statusCallback
=
(
sessionId
,
networkId
,
status
)
=>
{
globalThis
.
response
+=
"
status changed
"
+
sessionId
+
"
"
+
status
+
"
"
+
networkId
;
}
//删除上下线回调changeCallback
g_object
.
off
(
"
status
"
,
globalThis
.
statusCallback
);
//删除所有的上下线回调
g_object
.
off
(
"
status
"
);
```
\ No newline at end of file
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