Struct RowIdentityPatch 

pub struct RowIdentityPatch {
    pub columns: Option<Vec<String>>,
    pub by_position: Option<Vec<usize>>,
    pub cardinality: Option<Cardinality>,
    pub on_null_key: Option<IdentityFailurePolicy>,
    pub on_duplicate_key: Option<IdentityFailurePolicy>,
}

Presence-preserving row-identity overrides for a selected path.

Runtime identities and dataset defaults use RowIdentity. Entry-level configuration uses this patch type so an explicitly configured default enum value is distinguishable from an omitted field. columns and by_position are alternate key selectors; when both are present, columns takes precedence.

Fields

columns: Option<Vec<String>>

by_position: Option<Vec<usize>>

cardinality: Option<Cardinality>

on_null_key: Option<IdentityFailurePolicy>

on_duplicate_key: Option<IdentityFailurePolicy>

Implementations

impl RowIdentityPatch

pub fn apply_to(&self, identity: &mut RowIdentity)

Apply this entry-level override to a concrete inherited identity.

pub fn has_key_selector(&self) -> bool

Trait Implementations

impl Clone for RowIdentityPatch

fn clone(&self) -> RowIdentityPatch

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RowIdentityPatch

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

Formats the value using the given formatter.

impl Default for RowIdentityPatch

fn default() -> RowIdentityPatch

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for RowIdentityPatch

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for RowIdentityPatch

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for RowIdentityPatch

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for RowIdentityPatch

impl StructuralPartialEq for RowIdentityPatch