Struct FieldPromotion 

pub struct FieldPromotion {
    pub field: String,
    pub state_key: String,
    pub merge: MergePolicy,
    pub accept: Option<Arc<dyn Fn(&State, &Value) -> bool + Send + Sync>>,
}

Rule for promoting one raw extraction field into authoritative state.

Fields

field: String

Field name inside the extractor’s JSON object.

state_key: String

State key to write when the field is accepted.

merge: MergePolicy

Merge behavior for the target state key.

accept: Option<Arc<dyn Fn(&State, &Value) -> bool + Send + Sync>>

Optional acceptance predicate.

Implementations

impl FieldPromotion

pub fn keep_known(field: impl Into<String>) -> FieldPromotion

Promote field into the same state key using MergePolicy::KeepKnown.

pub fn overwrite(field: impl Into<String>) -> FieldPromotion

Promote field into the same state key using MergePolicy::Overwrite.

pub fn true_only(field: impl Into<String>) -> FieldPromotion

Promote a boolean field only when its extracted value is true.

pub fn non_empty(field: impl Into<String>) -> FieldPromotion

Promote a string field only when its extracted value is non-empty.

pub fn to(self, state_key: impl Into<String>) -> FieldPromotion

Promote into a custom target state key.

pub fn accept_when( self, predicate: impl Fn(&State, &Value) -> bool + Send + Sync + 'static, ) -> FieldPromotion

Only accept this promotion when predicate returns true.

This is the escape hatch for application-specific logic: FieldPromotion::overwrite("intent").accept_when(|state, value| ...).

pub fn and_accept_when( self, predicate: impl Fn(&State, &Value) -> bool + Send + Sync + 'static, ) -> FieldPromotion

Add an additional acceptance predicate, preserving any existing predicate.

pub fn after_presented(self, concept: impl Into<String>) -> FieldPromotion

Only promote after the named concept has been presented by a phase.

Trait Implementations

impl Clone for FieldPromotion

fn clone(&self) -> FieldPromotion

Returns a duplicate of the value.

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

Performs copy-assignment from source.