Struct ManifestLocation 

pub struct ManifestLocation {
    pub version: u64,
    pub path: Path,
    pub size: Option<u64>,
    pub naming_scheme: ManifestNamingScheme,
    pub e_tag: Option<String>,
}

Fields

version: u64

The version the manifest corresponds to.

path: Path

Path of the manifest file, relative to the table root.

size: Option<u64>

Size, in bytes, of the manifest file. If it is not known, this field should be None.

naming_scheme: ManifestNamingScheme

Naming scheme of the manifest file.

e_tag: Option<String>

Optional opaque object generation token observed at path.

An ETag is not necessarily a content checksum and may change when an object is rewritten with identical bytes. In particular, S3 Express returns an object-specific opaque value. Callers must not treat it as a content checksum, logical manifest identity, or dataset-incarnation identity. The generic ExternalManifestStore workflow therefore neither persists nor validates it: COPY and external index publication are not atomic, so an otherwise correct equivalent materialization can make a stored token stale before it is published.

When present, the token still distinguishes the physical object generation observed by this caller and can prevent reuse of an older cached Dataset at the same URI and version. Conversely, None must not be interpreted as proof that two observations belong to the same dataset incarnation.

Trait Implementations

impl Clone for ManifestLocation

fn clone(&self) -> ManifestLocation

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ManifestLocation

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

Formats the value using the given formatter.

impl TryFrom<ObjectMeta> for ManifestLocation

type Error = Error

The type returned in the event of a conversion error.

fn try_from(meta: ObjectMeta) -> Result<Self>

Performs the conversion.