Enum DefaultValue 

#[non_exhaustive]
pub enum DefaultValue {
    Bool(bool),
    Integer(i64),
    Float(f64),
    String(String),
}

A column default value that can be a boolean, integer, float, or SQL expression string.

In JSON model files the "default" field accepts any of these forms:

• true / false — boolean literal.
• 0, 42 — integer literal.
• 0.0, 1.5 — floating-point literal.
• "'pending'" — SQL string literal (note the inner single quotes).
• "NOW()" — SQL function call (no surrounding quotes).

Use DefaultValue::to_sql to convert to the SQL representation for DDL generation.

StringOrBool is a backwards-compatibility alias for this type.

This enum is #[non_exhaustive]: new variants may be added in future releases. Downstream match expressions should include a wildcard arm.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Bool(bool)

A boolean default (true or false).

Integer(i64)

An integer default value.

Float(f64)

A floating-point default value.

String(String)

A SQL expression or string literal default (e.g. "'pending'" or "NOW()").

Implementations

impl DefaultValue

pub fn as_bool(&self) -> Option<bool>

Returns the boolean value when this is Bool.

pub fn to_sql(&self) -> String

Convert to SQL string representation Empty strings are converted to ‘’ (SQL empty string literal)

pub fn is_string(&self) -> bool

Check if this is a string type (needs quoting for certain column types)

pub fn is_empty_string(&self) -> bool

Check if this is an empty string

Trait Implementations

impl Clone for DefaultValue

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 DefaultValue

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for DefaultValue

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for DefaultValue

impl From<&str> for DefaultValue

fn from(s: &str) -> Self

Converts to this type from the input type.

impl From<String> for DefaultValue

fn from(s: String) -> Self

Converts to this type from the input type.

impl From<bool> for DefaultValue

fn from(b: bool) -> Self

Converts to this type from the input type.

impl From<f64> for DefaultValue

fn from(f: f64) -> Self

Converts to this type from the input type.

impl From<i32> for DefaultValue

fn from(n: i32) -> Self

Converts to this type from the input type.

impl From<i64> for DefaultValue

fn from(n: i64) -> Self

Converts to this type from the input type.

impl JsonSchema for DefaultValue

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

impl PartialEq for DefaultValue

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for DefaultValue

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for DefaultValue