Struct IndexField 

pub struct IndexField {
    pub name: String,
    pub pointer: String,
    pub field_type: Option<FieldType>,
}

One indexed scalar: the index key name and the RFC-6901 JSON pointer into the payload it is extracted from.

Why declared-once extraction exists. Stamping agdx.idx.customer_id=alice on every Iggy message duplicates the field name on the wire and couples the producer to projection details. With a schema declared once on the projector, producers just push the payload (single or batched) and the worker derives the index from the body. The agdx.idx.* header path remains as the escape hatch for raw payloads and for schema-first bodies whose writer schema is not registered. Explicit headers always win over schema-extracted values for the same field name.

Fields

name: String

pointer: String

field_type: Option<FieldType>

Optional storage-type hint. The embedded engine ignores it and keeps native JSON types. A wide-column backend uses it to create a real typed column instead of a text fallback. Absent on the wire when unset, so pre-hint registries decode unchanged.

Implementations

impl IndexField

pub fn new(name: impl Into<String>, pointer: impl Into<String>) -> Self

An indexed field name extracted from the payload at JSON pointer.

pub fn typed( name: impl Into<String>, pointer: impl Into<String>, field_type: FieldType, ) -> Self

An indexed field with an explicit storage-type hint for columnar backends.

Trait Implementations

impl Clone for IndexField

fn clone(&self) -> IndexField

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for IndexField

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for IndexField

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for IndexField

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for IndexField

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 IndexField