Struct ColumnFilter 

pub struct ColumnFilter {
    pub field: String,
    pub op: ColumnOp,
    pub value: Value,
}

A structured predicate over a memory’s metadata column, for the fused vector+ColumnStore recall MemoryService::recall_where. Unlike the exact-match filter on MemoryService::recall, this supports ranges and comparisons (e.g. timestamp >= …), so temporal and numeric facets become queryable, not just equal-matchable.

Fields

field: String

Metadata field name (alphanumeric/underscore).

op: ColumnOp

Comparison operator.

value: Value

Value to compare against.

The comparison is TYPE-STRICT with no coercion, so the JSON type sent here is part of the query: 20260601 (number) never matches a fact stored as "20260601" (string) — same value, no match, and no error. A wrong type here is therefore the one mistake this API cannot report; it just returns nothing.

Which is why the advertised type is spelled out rather than left as the empty schema serde_json::Value would produce. {} says “send anything”, on the single field where sending the wrong thing fails silently.

Trait Implementations

impl Clone for ColumnFilter

fn clone(&self) -> ColumnFilter

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnFilter

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ColumnFilter

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl JsonSchema for ColumnFilter

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.