Adding and fetching custom metadata for onedrive

Hello Mangesh Shinde,

I understand you are trying to add a custom field while uploading items to OneDrive and then fetch that custom field and its value using the Microsoft Graph Java SDK.

Currently, OneDrive files (DriveItems) do not support adding custom metadata through OpenTypeExtension. Extensions are only available for resources like users, messages, events, groups, and devices.

For files, the supported way to add and manage custom metadata is by updating the file's associated listItem.

If you are working with OneDrive for Business, when you upload a file into a document library, a listItem is automatically created, and you can update it with your custom fields.

Using Microsoft Graph Java SDK, you can update the custom fields after uploading the file like this:

GraphServiceClient graphClient = new GraphServiceClient(requestAdapter);

FieldValueSet fieldValueSet = new FieldValueSet();
HashMap<String, Object> additionalData = new HashMap<String, Object>();
additionalData.put("CustomFieldName", "CustomFieldValue");
fieldValueSet.setAdditionalData(additionalData);

FieldValueSet result = graphClient
    .sites()
    .bySiteId("{site-id}")
    .lists()
    .byListId("{list-id}")
    .items()
    .byListItemId("{item-id}")
    .fields()
    .patch(fieldValueSet);

To fetch the custom metadata later, you can retrieve the listItem fields:

FieldValueSet  fields  = graphClient
    .sites()
    .bySiteId("{site-id}")
    .lists()
    .byListId("{list-id}")
    .items()
    .byListItemId("{item-id}")
    .fields()
    .get();

Please make sure that the custom field you are trying to update already exists in the document library columns.

For your reference, you can review the official Microsoft documentation here:
Update listItem fields - Microsoft Graph Java SDK

You can also check a related case where a similar situation occurred when trying to use Open Extensions on OneDrive files:

Update metadata of PowerPoint file using Microsoft Graph API - Stack Overflow

Hope this helps!

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