From 285251a3d514144d3d44c4eb072bc3bebaa50550 Mon Sep 17 00:00:00 2001 From: wangkai Date: Thu, 30 Jun 2022 19:12:00 +0800 Subject: [PATCH] =?UTF-8?q?=E6=8E=A5=E5=8F=A3=E6=96=87=E6=A1=A3=E6=9B=B4?= =?UTF-8?q?=E6=94=B9?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: wangkai --- .../apis/js-apis-distributed-data.md | 76 +++++++++++++------ 1 file changed, 51 insertions(+), 25 deletions(-) diff --git a/zh-cn/application-dev/reference/apis/js-apis-distributed-data.md b/zh-cn/application-dev/reference/apis/js-apis-distributed-data.md index 2a2070db9a..7094e42b7d 100644 --- a/zh-cn/application-dev/reference/apis/js-apis-distributed-data.md +++ b/zh-cn/application-dev/reference/apis/js-apis-distributed-data.md @@ -2230,7 +2230,7 @@ try { ### delete9+ -delete(predicates: Predicates, callback: AsyncCallback<void>): void +delete(predicates: dataSharePredicates.DataSharePredicates, callback: AsyncCallback<void>): 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<void>): 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 { ### delete9+ -delete(predicates: Predicates): Promise<void> +delete(predicates: dataSharePredicates.DataSharePredicates): Promise<void> 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<void> **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<ChangeNotification>): void @@ -2523,11 +2537,16 @@ putBatch(value: Array<ValuesBucket>, callback: AsyncCallback<void>): ```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<ValuesBucket>): Promise<void> ```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 { ### getResultSet9+ ### -getResultSet(predicates: Predicates, callback: AsyncCallback<KvStoreResultSet>): void +getResultSet(predicates: dataSharePredicates.DataSharePredicates, callback: AsyncCallback<KvStoreResultSet>): 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<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 { ``` ### getResultSet9+ ### -getResultSet(predicates: Predicates): Promise<KvStoreResultSet> +getResultSet(predicates: dataSharePredicates.DataSharePredicates): Promise<KvStoreResultSet> 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<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) .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'); }) }); -- GitLab