harmony 鸿蒙DataAbilityResult

2022-12-13
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DataAbilityResult

定义DataAbility数据操作结果，通过executeBatch操作数据库时，操作结果使用DataAbilityResult对象返回。

说明：

本接口从API version 7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。本接口仅可在FA模型下使用

导入模块

import ability from '@ohos.ability.ability';

属性

系统能力：以下各项对应的系统能力均为SystemCapability.Ability.AbilityRuntime.FAModel

名称	类型	必填	说明
uri?	string	否	指示待处理的DataAbility。例：’dataability:///com.example.xxx.xxxx’。
count?	number	否	指示受操作影响的数据数量。

示例：

import ability from '@ohos.ability.ability';
import featureAbility from '@ohos.ability.featureAbility';
import rdb from '@ohos.data.rdb';

// 批量执行数据库操作
function executeBatchOperation() {
    let dataAbilityUri = ('dataability:///com.example.myapplication.TestDataAbility');
    let DAHelper: ability.DataAbilityHelper;
    DAHelper = featureAbility.acquireDataAbilityHelper(dataAbilityUri);

    let valueBucket: rdb.ValuesBucket = {
        'name': 'DataAbilityHelperTest',
        'age': 24,
        'salary': 2024.20,
    };
    let predicateBackReferences = new Map<number, number>()
    predicateBackReferences.set(1, 1)

    let operations: Array<ability.DataAbilityOperation> = [
        {
            uri: dataAbilityUri,
            type: featureAbility.DataAbilityOperationType.TYPE_INSERT,
            valuesBucket: valueBucket,
            expectedCount: 1,
            predicatesBackReferences: predicateBackReferences,
            interrupted: true,
        },
        {
            uri: dataAbilityUri,
            type: featureAbility.DataAbilityOperationType.TYPE_INSERT,
            valuesBucket: valueBucket,
            expectedCount: 1,
            predicatesBackReferences: predicateBackReferences,
            interrupted: true,
        }
    ];
    try {
        DAHelper.executeBatch(dataAbilityUri, operations).then((data) => {
            for (let i = 0; i < data.length; i++) {
                let dataAbilityResult: ability.DataAbilityResult = data[i];
                console.log('dataAbilityResult.uri: ${dataAbilityResult.uri}');
                console.log('dataAbilityResult.count: ${dataAbilityResult.count}');
            }
        }).catch((err: BusinessError) => {
            console.error(`executeBatch error: ${JSON.stringify(err)}`);
        });
    } catch (err) {
        console.error(`executeBatch error: ${JSON.stringify(err)}`);
    }
}