harmony 鸿蒙Distributed Data Management Subsystem Changelog

2023-10-30
浏览 (300)

Distributed Data Management Subsystem Changelog

cl.datashare.1 Change of the data Type in PublishedItem from Ashmem to ArrayBuffer

Change Impact

Changed the type of data in PublishedItem from Ashmem to ArrayBuffer.

PublishedItem¹⁰⁺

Defines the data to publish.

System capability: SystemCapability.DistributedDataManager.DataShare.Consumer

Name	Type	Mandatory	Description
key	string	Yes	Key of the data to publish.
data	string \|ArrayBuffer	Yes	Data to publish. If a large volume of data is to be published, use data of the ArrayBuffer type.
subscriberId	string	Yes	Subscriber ID.

Adaptation Guide The sample code is as follows:

Example

let arrayBuffer = new ArrayBuffer(1);
let version = 1;
let data : Array<dataShare.PublishedItem> = [{key:"key2", subscriberId:"11", data:arrayBuffer}];
function publishCallback(err, result: Array<dataShare.OperationResult>) {
    console.info("publishCallback " + JSON.stringify(result));
}
try {
    console.info("data length is:", data.length);
    dataShareHelper.publish(data, "com.acts.ohos.data.datasharetest", version, publishCallback);
} catch (e) {
    console.error("publish error " + JSON.stringify(e));
}