Struct EntityDeclaration 

pub struct EntityDeclaration {
    pub schema: String,
    pub table: String,
    pub time_index: String,
    pub entity_type: String,
    pub id_columns: Vec<String>,
    pub id_qualifier: Option<String>,
    pub superseded_by_columns: Vec<String>,
    pub descriptive_columns: Vec<String>,
    pub scope_columns: Vec<String>,
}

A single table’s entity-identity declaration, projected from information_schema.table_semantics (greptime.semantic.entity.<type>.*).

Fields

schema: String

The declaring table’s schema, for the qualified source_tables lineage.

table: String

The declaring table’s name, recorded in source_tables.

time_index: String

The table’s time index column, used for the temporal window filter.

entity_type: String

id_columns: Vec<String>

Identifying columns (>= 1), ordered broad to narrow.

id_qualifier: Option<String>

Optional column qualifying the first identity component, so a source carrying the parts separately (a trace table’s service.namespace) yields the same id as one carrying them pre-composed (job).

superseded_by_columns: Vec<String>

Identity columns of a more specific entity type that takes over on the rows carrying all of them (a pod’s container is the k8s.container, not a generic container). Empty for explicit declarations: a user who declares a type means it unconditionally.

descriptive_columns: Vec<String>

Descriptive columns snapshotted into the descriptive JSON (may be empty).

scope_columns: Vec<String>

Scope columns (namespace/environment). One column → scope verbatim; several → sorted k=v,k=v, mirroring the composite id rendering.

Trait Implementations

impl Clone for EntityDeclaration

fn clone(&self) -> EntityDeclaration

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EntityDeclaration

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

Formats the value using the given formatter.