Method unrecord_last

atomic-repository/src/repository/history.rs:396–421

Unrecord the last change from the current view. This is a convenience method for unrecording the most recent change. # Arguments `options` - Options controlling the unrecord behavior # Returns An `UnrecordOutcome` with details about what was unrecorded. # Example ```rust,ignore // Undo the last change let outcome = repo.unrecord_last(UnrecordOptions::default())?; ```

(
        &self,
        options: UnrecordOptions,
    )

    /// let outcome = repo.unrecord_last(UnrecordOptions::default())?;
    /// ```
    pub fn unrecord_last(
        &self,
        options: UnrecordOptions,
    ) -> Result<UnrecordOutcome, RepositoryError> {
        // Get the last change hash
        let txn = self
            .pristine
            .read_txn()
            .map_err(|e| RepositoryError::Database(e.to_string()))?;

        let view_name = options.view.as_deref().unwrap_or(&self.current_view);
        let view = txn
            .get_view(view_name)
            .map_err(|e| RepositoryError::Database(e.to_string()))?
            .ok_or_else(|| RepositoryError::ViewNotFound {
                name: view_name.to_string(),
            })?;

        let last_hash = crate::unrecord::get_last_change(&txn, &view)
            .map_err(|e| RepositoryError::Unrecord(e.to_string()))?
            .ok_or_else(|| RepositoryError::Unrecord("View is empty".to_string()))?;

        drop(txn);

        self.unrecord(&last_hash, options)
    }

    /// Reinsert a previously unrecorded change at a specific position.
    ///