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提交 285251a3 编写于 作者: W wangkai
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接口文档更改 

Signed-off-by: Nwangkai <wangkai424@huawei.com>
上级 4255689e
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Showing with 51 addition and 25 deletion
zh-cn/application-dev/reference/apis/js-apis-distributed-data.md
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......@@ -2230,7 +2230,7 @@ try {
### delete<sup>9+</sup>
delete(predicates: Predicates, callback: AsyncCallback&lt;void&gt;): void
delete(predicates: dataSharePredicates.DataSharePredicates, callback: AsyncCallback&lt;void&gt;): void
从数据库中删除符合predicates条件的键值对，并通过callback方式返回，此方法为异步方法。
......@@ -2246,10 +2246,11 @@ delete(predicates: Predicates, callback: AsyncCallback&lt;void&gt;): void
**示例：**
```js
import dataSharePredicates from './@ohos.data.dataSharePredicates';
let kvStore;
try {
let predicates = new dataShare.DataSharePredicates();
await kvStore.delete(predicates, function (err, data) {
let predicates = new dataSharePredicates.DataSharePredicates();
kvStore.delete(predicates, function (err, data) {
if (err == undefined) {
console.log('delete success');
} else {
......@@ -2263,7 +2264,7 @@ try {
### delete<sup>9+</sup>
delete(predicates: Predicates): Promise&lt;void&gt;
delete(predicates: dataSharePredicates.DataSharePredicates): Promise&lt;void&gt;
从数据库中删除符合predicates条件的键值对，并通过Promise方式返回，此方法为异步方法。
......@@ -2285,15 +2286,28 @@ delete(predicates: Predicates): Promise&lt;void&gt;
**示例：**
```js
import dataSharePredicates from './@ohos.data.dataSharePredicates';
let kvStore;
try {
let predicates = new dataShare.DataSharePredicates();
let predicates = new dataSharePredicates.DataSharePredicates();
let arr = ["name"];
predicates.inKeys(arr);
kvStore.put("name", "bob").then((data) => {
console.log('put success' + JSON.stringify(data));
kvStore.delete(predicates).then((data) => {
console.log('delete success');
}).catch((err) => {
console.log('delete fail' + JSON.stringify(err));
});
}) .catch((err) => {
console.log(' put fail' + err);
});
}catch (e) {
console.log("An unexpected error occurred. Error:" + e);
}
```
### on('dataChange')
on(event: 'dataChange', type: SubscribeType, observer: Callback&lt;ChangeNotification&gt;): void
......@@ -2523,11 +2537,16 @@ putBatch(value: Array&lt;ValuesBucket&gt;, callback: AsyncCallback&lt;void&gt;):
```js
let kvStore;
try {
var arr = new Uint8Array([21,31]);
let entries = new Array({"name": "roe11", "age": 21, "salary": 20.5, "blobType": u8,},
{"name": "roe12", "age": 21, "salary": 20.5, "blobType": u8,},
{"name": "roe13", "age": 21, "salary": 20.5, "blobType": u8,})
kvStore.putBatch(entries, async function (err,data) {
let v8Arr = [];
let arr = new Uint8Array([4,5,6,7]);
let vb1 = {key : "name_1", value : 32}
let vb2 = {key : "name_2", value : arr};
let vb3 = {key : "name_3", value : "lisi"};
v8Arr.push(vb1);
v8Arr.push(vb2);
v8Arr.push(vb3);
kvStore.putBatch(v8Arr, async function (err,data) {
console.log('putBatch success');
}).catch((err) => {
console.log('putBatch fail ' + JSON.stringify(err));
......@@ -2562,12 +2581,17 @@ putBatch(value: Array&lt;ValuesBucket&gt;): Promise&lt;void&gt;
```js
let kvStore;
try {
var arr = new Uint8Array([21,31]);
let entries = new Array({"name": "roe11", "age": 21, "salary": 20.5, "blobType": u8,},
{"name": "roe12", "age": 21, "salary": 20.5, "blobType": u8,},
{"name": "roe13", "age": 21, "salary": 20.5, "blobType": u8,})
kvStore.putBatch(entries).then(async (err) => {
console.log('putBatch success');
let v8Arr = [];
let arr = new Uint8Array([4,5,6,7]);
let vb1 = {key : "name_1", value : 32}
let vb2 = {key : "name_2", value : arr};
let vb3 = {key : "name_3", value : "lisi"};
v8Arr.push(vb1);
v8Arr.push(vb2);
v8Arr.push(vb3);
kvStore.putBatch(v8Arr).then(async (err) => {
console.log('putBatch success');
}).catch((err) => {
console.log('putBatch fail ' + JSON.stringify(err));
});
......@@ -3612,7 +3636,7 @@ try {
### getResultSet<sup>9+</sup> ###
getResultSet(predicates: Predicates, callback: AsyncCallback&lt;KvStoreResultSet&gt;): void
getResultSet(predicates: dataSharePredicates.DataSharePredicates, callback: AsyncCallback&lt;KvStoreResultSet&gt;): void
获取与指定Predicate对象匹配的KvStoreResultSet对象，并通过callback方式返回，此方法为异步方法。
......@@ -3628,15 +3652,16 @@ getResultSet(predicates: Predicates, callback: AsyncCallback&lt;KvStoreResultSet
**示例：**
```js
import dataSharePredicates from './@ohos.data.dataSharePredicates';
let kvStore;
try {
let resultSet;
let predicates = new dataShare.DataSharePredicates();
let predicates = new dataSharePredicates.DataSharePredicates();
predicates.prefixKey("batch_test_string_key");
await kvStore.getResultSet(predicates, async function (err, result) {
kvStore.getResultSet(predicates, async function (err, result) {
console.log(' GetResultSet success');
resultSet = result;
await kvStore.closeResultSet(resultSet, function (err, data) {
kvStore.closeResultSet(resultSet, function (err, data) {
console.log(' closeResultSet success');
})
});
......@@ -3646,7 +3671,7 @@ try {
```
### getResultSet<sup>9+</sup> ###
getResultSet(predicates: Predicates): Promise&lt;KvStoreResultSet&gt;
getResultSet(predicates: dataSharePredicates.DataSharePredicates): Promise&lt;KvStoreResultSet&gt;
获取与指定Predicate对象匹配的KvStoreResultSet对象，并通过Promise方式返回，此方法为异步方法。
......@@ -3667,15 +3692,16 @@ getResultSet(predicates: Predicates): Promise&lt;KvStoreResultSet&gt;
**示例：**
```js
import dataSharePredicates from './@ohos.data.dataSharePredicates';
let kvStore;
try {
let resultSet;
let predicates = new dataShare.DataSharePredicates();
let predicates = new dataSharePredicates.DataSharePredicates();
predicates.prefixKey("batch_test_string_key");
await kvStore.getResultSet(predicates) .then((result) => {
kvStore.getResultSet(predicates) .then((result) => {
console.log(' GetResultSet success');
resultSet = result;
await kvStore.closeResultSet(resultSet, fun ction (err, data) {
kvStore.closeResultSet(resultSet, fun ction (err, data) {
console.log(' closeResultSet success');
})
});
......
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