Struct GrainRecord 

pub struct GrainRecord {
    pub hash: String,
    pub grain_type: String,
    pub namespace: String,
    pub created_at_ms: i64,
    pub valid_to_ms: Option<i64>,
    pub superseded_by: Option<String>,
    pub fields: Map<String, Value>,
}

A grain as read from the substrate: the content address, the OMS type name, index-layer facts (superseded_by), and the decoded field map. The engine treats fields as JSON and pulls typed values through the accessors below.

Fields

hash: String

grain_type: String

namespace: String

created_at_ms: i64

valid_to_ms: Option<i64>

superseded_by: Option<String>

Index-layer supersession pointer; Some means this grain is not a head.

fields: Map<String, Value>

Implementations

impl GrainRecord

pub fn is_live(&self) -> bool

A grain is live when no supersession has retired it.

pub fn str_field(&self, key: &str) -> Option<&str>

pub fn bool_field(&self, key: &str) -> Option<bool>

pub fn fact_subject(&self) -> Option<&str>

pub fn fact_relation(&self) -> Option<&str>

pub fn fact_object(&self) -> Option<&str>

pub fn tool_name(&self) -> Option<&str>

pub fn is_error(&self) -> bool

pub fn tool_content(&self) -> Option<&str>

The tool result text used for error-signature extraction. Tool grains carry it as tool_content (compact cnt, distinct from Event’s uncompacted content); other shapes fall back.

pub fn skill_name(&self) -> Option<&str>

pub fn skill_proficiency(&self) -> Option<f64>

Skill proficiency (dedicated proficiency key; aliases confidence).

pub fn skill_practice_count(&self) -> i64

pub fn goal_state(&self) -> Option<&str>

pub fn goal_progress(&self) -> f64

Trait Implementations

impl Clone for GrainRecord

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GrainRecord

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for GrainRecord

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for GrainRecord

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for GrainRecord

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for GrainRecord