Struct Field 

pub struct Field {
    pub field: FieldName,
    pub options: BTreeMap<String, GenericValue>,
    pub source: FieldSource,
}

One field of a document: a name, optional OpenSearch mapping options passed through to the index, and a source saying where its value comes from. A leaf field’s type is declared on its source (a Column’s ty, an Aggregate’s value_type) so the document shape is known without a database.

Fields

field: FieldName

options: BTreeMap<String, GenericValue>

Extra OpenSearch mapping properties merged beside the derived type (e.g. analyzer, scaling_factor). Empty for most fields.

source: FieldSource

Implementations

impl Field

pub fn children(&self) -> &[Field]

The fields nested directly under this one: a Group’s members or a Join’s projection. Columns, aggregates, and constants have none.

pub fn relation(&self) -> Option<&Relation>

pub fn column(&self) -> Option<&ColumnName>

The column this field reads, if it is a plain column field.

Trait Implementations

impl Clone for Field

fn clone(&self) -> Field

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Field

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Field

fn deserialize<__D>( __deserializer: __D, ) -> Result<Field, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for Field

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Serialize for Field

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

where __S: Serializer,

Serialize this value into the given Serde serializer.