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commands.md

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Defaults

This controls default choices for the gen command line

  • database
    • This controls the default database for gen to work on, it is what is passed to the --db argument.
  • collection
    • This controls the default collection for gen to work on, it is what is passed to the --name argument.

Apply

Apply operations to the current branch.

Operations for a given branch can be found via gen --db db_name.db operations -b branch_name. To apply an operation from a given branch, use gen --db db_name.db apply operation_id. The changes will be applied to the current state of the database and recorded as a new operation.

Branches

Creating a new branch can be accomplished via gen --db db_name.db branch --create branch_name. Deleting a branch can be accomplished via gen --db db_name.db branch --delete branch_name. To list all available branches, gen --db db_name.db branch --list. The current branch will be marked with a > before it. To checkout a branch, gen --db db_name.db branch --checkout branch_name. This will migrate the database to the last change applied in a given branch. To merge a branch, gen --db db_name.db branch --merge branch_name, will merge a given branch into the current branch. If there is no common point between the two branches, this will return an error.

Reset

This will revert a branch to a given operation id and detach operations made beneath this operation id. This should be done when work after a given point is no longer desired and you wish to start at a fresh point in the branch.

To reset the database to a given operation, run the command gen --db db_name.db reset operation_id.

Operations

Operations are changes that have been made to the database. Commands such as import and update create a new operation. To see all operations, gen --db db_name.db operations will list operations. The operation the database currently is on will be prefixed with a >.

Patches

Like git, patches are the mechanism for bundling together pieces of work for distribution. Patches can be created via the patch-create command and applied via patch-apply.

Checkout

Checkouts allow a user to migrate the database to different states. To move the database to a given operation, the command in gen --db db_name.db checkout -b branch_name operation_id. If no branch name is specified, the current branch will be used. The operation_id corresponds to the operation in operations.