Struct FieldMapping 

pub struct FieldMapping {
    pub source_field: String,
    pub target_field: String,
    pub mapping_type: FieldMappingType,
    pub expression: Option<String>,
    pub default_value: Option<String>,
    pub required: bool,
    pub description: Option<String>,
}

Individual field mapping

Fields

source_field: String

Source field name

target_field: String

Target field name

mapping_type: FieldMappingType

Mapping type

expression: Option<String>

Expression for computed fields

default_value: Option<String>

Default value if source is null/missing

required: bool

Whether this field is required

description: Option<String>

Field description

Implementations

impl FieldMapping

pub fn direct(source: &str, target: &str) -> Self

Create a direct field mapping (1:1)

pub fn computed(target: &str, expression: &str) -> Self

Create a computed field mapping

pub fn with_default(source: &str, target: &str, default: &str) -> Self

Create a field mapping with default value

pub fn required(self) -> Self

Set the field as required

pub fn with_description(self, description: &str) -> Self

Set the description

Trait Implementations

impl Clone for FieldMapping

fn clone(&self) -> FieldMapping

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FieldMapping

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for FieldMapping

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for FieldMapping

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

where __S: Serializer,

Serialize this value into the given Serde serializer.