Method can_unrecord

atomic-repository/src/repository/history.rs:421–439

Check if a change can be unrecorded. This checks whether the change is in the view and whether it has any dependents that would also need to be unrecorded. # Arguments `hash` - Hash of the change to check # Returns Information about the change's dependencies and whether it can be safely unrecorded.

(
        &self,
        hash: &Hash,
    )

    /// Information about the change's dependencies and whether it can be
    /// safely unrecorded.
    pub fn can_unrecord(
        &self,
        hash: &Hash,
    ) -> Result<crate::unrecord::UnrecordDependencyInfo, RepositoryError> {
        let txn = self
            .pristine
            .read_txn()
            .map_err(|e| RepositoryError::Database(e.to_string()))?;

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

        crate::unrecord::check_can_unrecord(&txn, &view, hash, &UnrecordOptions::default())
            .map_err(|e| RepositoryError::Unrecord(e.to_string()))
    }
}