Struct ColumnInfo 

pub struct ColumnInfo {
    pub name: String,
    pub data_type: DataType,
    pub nullable: bool,
    pub description: Option<String>,
    pub metadata: HashMap<String, Value>,
}

Column information

Fields

name: String

Column name

data_type: DataType

Column data type

nullable: bool

Whether column is nullable

description: Option<String>

Column description

metadata: HashMap<String, Value>

Column metadata

Implementations

impl ColumnInfo

pub fn new<S: Into<String>>(name: S, data_type: DataType) -> Self

Create new column info

pub fn nullable(self, nullable: bool) -> Self

Set nullable

pub fn description<S: Into<String>>(self, description: S) -> Self

Set description

pub fn with_metadata<S: Into<String>>(self, key: S, value: Value) -> Self

Add metadata

Trait Implementations

impl Clone for ColumnInfo

fn clone(&self) -> ColumnInfo

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnInfo

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ColumnInfo

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ColumnInfo

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

where __S: Serializer,

Serialize this value into the given Serde serializer.