Struct Column 

pub struct Column {
    pub column: ColumnName,
    pub ty: FlussoType,
    pub nullable: bool,
    pub transforms: Vec<Transform>,
    pub default: Option<GenericValue>,
    pub enum_order: Vec<String>,
    pub subfields: bool,
    pub indexed: bool,
}

A column-backed field: the column to read, its declared type and nullability, the transforms to apply, and a default to coalesce nulls to.

Fields

column: ColumnName

ty: FlussoType

The declared type — the OpenSearch mapping derives from it, and a live database (when reachable) is checked against it.

nullable: bool

Whether the column admits null. The resolver still forces non-null for a primary key or a column with a default.

transforms: Vec<Transform>

default: Option<GenericValue>

enum_order: Vec<String>

For an Enum column, its variants in rank order; empty for a bare enum or any non-enum column. When non-empty the field sorts by this order instead of alphabetically — the OpenSearch sink prebakes the rank into a .sort subfield. Belongs on the column, not the FlussoType, because it is a property of this specific field.

subfields: bool

Whether a sink may add its automatic subfields to this string field (the OpenSearch .keyword/.keyword_lowercase/.text). false maps the bare field whatever the sink’s own switch says. Only a text, keyword or uuid column may turn it off.

indexed: bool

Whether a sink indexes this field’s content. false keeps the value in the stored document but maps it as one disabled object, so nothing under it is searchable. Only a json column may turn it off.

Trait Implementations

impl Clone for Column

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Column

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Column

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for Column

Hashes the fields in declaration order (exactly what the derive did), plus MAP_KEY_MAPPING_REVISION for a map column only. subfields and indexed are hashed only when turned off, so a schema that never opts out keeps the content hash (and so the physical index) it had before they existed.

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

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 Column

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

where __S: Serializer,

Serialize this value into the given Serde serializer.