What is the process for obtaining the eTag (MetaData) from a DocumentInfoRecord retrieval in SAP Cloud SDK using Javascript?

I am utilizing the SAP Cloud SDK for javascript to manage DocumentInfoRecords. Upon updating a DIR, I encountered error 428. Therefore, I require the etag of the request similar to what is available in the SAP Cloud API.

How can I retrieve the etag from the GET request or access header response information for each sdk request?

GET:

DocumentInfoRecord.requestBuilder()
.getByKey(dir.documentInfoRecordDocType, dir.documentInfoRecordDocVersion, dir.documentInfoRecordDocNumber, dir.documentInfoRecordDocPart)
.execute({});

UPDATE with etag

DocumentInfoRecord.requestBuilder().update(dir).withCustomHeaders({ key: "If-Match", value: "etag" }).execute({});
javascripttypescripts4sdksap-cloud-sdk

Answer №1

Starting from version 1.1.0, the SAP Cloud SDK for JavaScript (formerly known as SAP S/4HANA Cloud SDK) seamlessly manages ETag in the background. Further details on optimistic concurrency control can be found in the release blog.

If you upgrade to the most recent release (1.2.1 currently), you can easily access the document info record, make necessary field modifications, and update it by sending the modified object back to the service.

var dir = await DocumentInfoRecord.requestBuilder()
    .getByKey(dir.documentInfoRecordDocType, dir.documentInfoRecordDocVersion, dir.documentInfoRecordDocNumber, dir.documentInfoRecordDocPart)
    .execute({destinationName: "MyServer"});
dir.responsiblePersonName = "John Doe";
DocumentInfoRecord.requestBuilder()
    .update(dir)
    .execute({destinationName: "MyServer"})
    .then(...);

Answer №2

UPDATE: Take a look at Henning Heitkötter's response for more information.

At this time, we do not have eTag handling capabilities. This is something that we are actively working on and it is on our list of upcoming features. Rest assured, we will provide an update to this response once the feature is implemented.

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