Struct SequenceDef 

pub struct SequenceDef {
    pub name: Box<str>,
    pub column: ColId,
    pub start: Option<i128>,
    pub min_value: Option<i128>,
    pub max_value: Option<i128>,
    pub increment: i128,
}

A sequence definition for a database table column.

Fields

name: Box<str>

The name of the sequence. Must be unique within the containing ModuleDef.

column: ColId

The position of the column associated with this sequence. This refers to a column in the same RawTableDef that contains this RawSequenceDef. The column must have integral type. This must be the unique RawSequenceDef for this column.

start: Option<i128>

The value to start assigning to this column. Will be incremented by 1 for each new row. If not present, an arbitrary start point may be selected.

min_value: Option<i128>

The minimum allowed value in this column. If not present, no minimum.

max_value: Option<i128>

The maximum allowed value in this column. If not present, no maximum.

increment: i128

The increment to use when updating the sequence.

Trait Implementations

impl Clone for SequenceDef

fn clone(&self) -> SequenceDef

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SequenceDef

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

Formats the value using the given formatter.

impl From<SequenceDef> for RawSequenceDefV9

fn from(val: SequenceDef) -> Self

Converts to this type from the input type.

impl ModuleDefLookup for SequenceDef

type Key<'a> = &'a str

A reference to a definition of this type within a module def. This reference should be portable across migrations.

fn key(&self) -> Self::Key<'_>

Get a reference to this definition.

fn lookup<'a>(module_def: &'a ModuleDef, key: Self::Key<'_>) -> Option<&'a Self>

Look up this entity in the module def.

impl PartialEq for SequenceDef

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for SequenceDef

impl StructuralPartialEq for SequenceDef