downloadBriefcase MethodStatic

Download a new briefcase from iModelHub for the supplied iModelId.

The process of downloading a briefcase file involves first obtaining a valid BriefcaseId from IModelHub. For each IModel, IModelHub maintains a list of BriefcaseIds assigned to users, to ensure that no two users have the same BriefcaseId. Typically a given user will have only one briefcase on their machine for a given iModelId. Rarely, it may be necessary to use more than one briefcase to make isolated independent sets of changes, but that is exceedingly complicated and rare. If no BriefcaseId is supplied, a new one is acquired from iModelHub.

Then, a Checkpoint file (as of a ChangeSetId, typically "Latest") is downloaded from IModelHub. After the download completes, the briefcaseId in the local file is changed to acquired briefcaseId, changing the checkpoint file into a briefcase file.

Each of these steps requires a valid AuthorizedClientRequestContext to provide the user's credentials for the requests.

downloadBriefcase(requestContext: AuthorizedClientRequestContext, request: RequestNewBriefcaseArg): Promise<LocalBriefcaseProps>

note The location of the local file to hold the briefcase is arbitrary and may be any valid local path on your machine. If you don't supply a filename, the local briefcase cache is used by creating a file with the briefcaseId as its name in the briefcases folder below the folder named for the IModelId.

note It is invalid to edit briefcases on a shared network drive and that is a sure way to corrupt your briefcase (see https://www.sqlite.org/howtocorrupt.html)

note The special briefcaseId BriefcaseIdValue.Unassigned (0) can be used for a local briefcase that can accept changesets but may not be generate changesets.

see CheckpointManager.downloadCheckpoint

Returns - Promise<LocalBriefcaseProps>

The properties of the local briefcase in a Promise that is resolved after the briefcase is fully downloaded and the briefcase file is ready for use via BriefcaseDb.open.

Defined in

• core/backend/src/BriefcaseManager.ts Line 204

Last Updated: 29 November, 2022