Struct RefTransactionItem 

pub struct RefTransactionItem {
    pub name: String,
    pub new_oid: Option<ObjectId>,
    pub expected_old: Option<ObjectId>,
}

A single ref change in an update_refs batch transaction.

Fields

name: String

Full ref name (e.g. refs/heads/main).

new_oid: Option<ObjectId>

New value to write, or None to delete the ref.

expected_old: Option<ObjectId>

Compare-and-swap expectation. When Some, the ref’s current value must equal this for the item to apply (an expected_old of an oid that is not the current value — including when the ref is absent — fails the batch). When None, the current value is not checked.

Note: this CAS form expects the ref to currently hold expected_old. To require that a ref be created (must not already exist), leave this None — callers that need create-only semantics check existence themselves; matching jj’s transaction model where None means “any”.

Trait Implementations

impl Clone for RefTransactionItem

fn clone(&self) -> RefTransactionItem

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RefTransactionItem

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.