Struct MergePolicy 

pub struct MergePolicy {
    pub limit: usize,
    pub normalization: ScoreNormalization,
    pub multi_leg_boost: f64,
}

Merge policy for combining results from multiple route legs.

The merge pipeline:

1. Collect — gather raw results from each leg
2. Fuse duplicates — merge duplicates by source identity, preserving provenance from all contributing legs (union of source legs, best score)
3. Normalize — bring scores to a common scale
4. Boost — apply multi-leg support boost to fused results
5. Rank — order by final score descending
6. Truncate — apply the final limit

Fields

limit: usize

Final result limit after merge.

normalization: ScoreNormalization

How to handle score normalization across legs.

multi_leg_boost: f64

Boost factor applied to results that appeared in multiple legs. Each additional leg multiplies the score by (1.0 + multi_leg_boost). Set to 0.0 to disable boosting.

Trait Implementations

impl Clone for MergePolicy

fn clone(&self) -> MergePolicy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MergePolicy

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

Formats the value using the given formatter.

impl Default for MergePolicy

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for MergePolicy

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for MergePolicy

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

where __S: Serializer,

Serialize this value into the given Serde serializer.