Struct RetentionCandidate 

pub struct RetentionCandidate<'a> {
    pub metadata: &'a FrameMetadata,
    pub sequence: Option<u64>,
    pub written_at_unix_ms: Option<u64>,
    pub last_accessed_unix_ms: Option<u64>,
    pub retention_label: Option<&'a str>,
}

A backend-provided candidate for retention evaluation.

The candidate borrows the stable FrameMetadata envelope and carries optional facts supplied by the backend. Missing facts simply make rules that depend on them non-matching.

Fields

metadata: &'a FrameMetadata

Stable frame metadata decoded from the backend entry.

sequence: Option<u64>

Backend-specific monotonic sequence number, where larger is newer.

written_at_unix_ms: Option<u64>

Backend-supplied write timestamp in Unix milliseconds.

last_accessed_unix_ms: Option<u64>

Backend-supplied last-access timestamp in Unix milliseconds.

retention_label: Option<&'a str>

Optional retention label stamped by the backend or host app.

Implementations

impl<'a> RetentionCandidate<'a>

pub fn new(metadata: &'a FrameMetadata) -> Self

Construct a candidate from required frame metadata.

pub fn with_sequence(self, sequence: u64) -> Self

Attach a backend-specific monotonic sequence number.

pub fn with_written_at_unix_ms(self, written_at_unix_ms: u64) -> Self

Attach a backend-supplied write timestamp in Unix milliseconds.

pub fn with_last_accessed_unix_ms(self, last_accessed_unix_ms: u64) -> Self

Attach a backend-supplied last-access timestamp in Unix milliseconds.

pub fn with_retention_label(self, retention_label: &'a str) -> Self

Attach a host-defined retention label.

Trait Implementations

impl<'a> Clone for RetentionCandidate<'a>

fn clone(&self) -> RetentionCandidate<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for RetentionCandidate<'a>

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

Formats the value using the given formatter.

impl<'a> Copy for RetentionCandidate<'a>