Struct ManifestBuildConfig 

pub struct ManifestBuildConfig {
    pub auto_set_feature_flags: bool,
    pub timestamp_nanos: u128,
    pub use_stable_row_ids: bool,
    pub use_legacy_format: Option<bool>,
    pub storage_format: Option<DataStorageFormat>,
    pub disable_transaction_file: bool,
    pub migration_next_row_id: Option<u64>,
}

Options controlling how a new Manifest is assembled from a transaction.

The timestamp arrives already resolved to nanoseconds since the Unix epoch. Callers own the clock so that a caller wanting a mockable one keeps it: the lance crate mocks SystemTime under cfg(test), which only takes effect in that crate.

Fields

auto_set_feature_flags: bool

Recompute the manifest’s feature flags from the fragments and settings below. False leaves whatever flags the previous manifest carried.

timestamp_nanos: u128

Value for the new manifest’s timestamp, in nanoseconds since the Unix epoch.

use_stable_row_ids: bool

Request the stable row id feature. The flag is also inherited from the previous manifest, so false does not turn it off for a dataset that has it.

use_legacy_format: Option<bool>

Overwrite only: force the legacy (true) or v2 (false) file format. None keeps the format the dataset already had.

storage_format: Option<DataStorageFormat>

Overwrite only: force this storage format, taking precedence over use_legacy_format. None keeps the format the dataset already had.

disable_transaction_file: bool

Skip writing a detached transaction file for this commit.

migration_next_row_id: Option<u64>

When Some, this commit is the second step of migrate_to_stable_row_ids. It bypasses the “cannot enable stable row ids on existing dataset” guard and sets manifest.next_row_id to the provided value before activating the flag.

Trait Implementations

impl Clone for ManifestBuildConfig

fn clone(&self) -> ManifestBuildConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ManifestBuildConfig

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

Formats the value using the given formatter.