Method create_view_with_identity

atomic-repository/src/repository/views.rs:620–662

Create a view with an explicit scope and optional named parent. The view's change log starts empty; this only establishes identity.

(
        &mut self,
        name: &str,
        scope: ViewScope,
        parent_name: Option<&str>,
    )

    ///
    /// The view's change log starts empty; this only establishes identity.
    fn create_view_with_identity(
        &mut self,
        name: &str,
        scope: ViewScope,
        parent_name: Option<&str>,
    ) -> Result<(), RepositoryError> {
        ensure_workspace_dir(&self.dot_dir, name)?;

        let mut txn = self
            .pristine
            .write_txn()
            .map_err(|e| RepositoryError::Database(e.to_string()))?;

        if txn
            .get_view(name)
            .map_err(|e| RepositoryError::Database(e.to_string()))?
            .is_some()
        {
            return Err(RepositoryError::ViewAlreadyExists {
                name: name.to_string(),
            });
        }

        let parent_id = match parent_name {
            Some(p) => Some(
                txn.get_view(p)
                    .map_err(|e| RepositoryError::Database(e.to_string()))?
                    .ok_or_else(|| RepositoryError::ViewNotFound {
                        name: p.to_string(),
                    })?
                    .id,
            ),
            None => None,
        };

        txn.create_view(name, scope, parent_id)
            .map_err(|e| RepositoryError::Database(e.to_string()))?;

        txn.commit()
            .map_err(|e| RepositoryError::Database(e.to_string()))?;

        Ok(())
    }

    /// Export a view's complete identity as a [`ViewManifest`].
    ///