Struct Note 

pub struct Note {
    pub header: Header,
    pub kind: String,
    pub status: NoteStatus,
    pub content: String,
    pub properties: BTreeMap<String, PropertyValue>,
    pub tags: Vec<String>,
    pub salience: Option<f64>,
    pub decay_factor: Option<f64>,
    pub expires_at: Option<Timestamp>,
    pub deleted_at: Option<Timestamp>,
}

A note record — temporal-referential content plus free-form properties.

When present, salience must be finite and in [0.0, 1.0], and decay_factor must be finite and non-negative. When the serde feature is enabled, deserialization rejects out-of-range values.

Fields

header: Header

Identity and namespace metadata shared by all substrate records.

kind: String

Pack-declared kind string (e.g. "observation", "task", "memory").

status: NoteStatus

Cross-cutting lifecycle status.

content: String

Main textual body of the note.

properties: BTreeMap<String, PropertyValue>

Arbitrary structured metadata as key-value pairs.

tags: Vec<String>

Categorical labels for filtering and retrieval.

salience: Option<f64>

Retrieval priority weight in [0.0, 1.0]; higher values surface the note sooner.

decay_factor: Option<f64>

Exponential decay rate applied to salience over time; 0.0 means no decay.

expires_at: Option<Timestamp>

Optional expiry timestamp after which the note is treated as inactive.

deleted_at: Option<Timestamp>

Set when the note is soft-deleted; absent means active.

Implementations

impl Note

pub fn is_valid(&self) -> bool

Return true if all numeric fields carry finite, domain-valid values.

• salience, if present, must be finite and in [0.0, 1.0].
• decay_factor, if present, must be finite and non-negative.

Trait Implementations

impl Clone for Note

fn clone(&self) -> Note

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Note

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

Formats the value using the given formatter.