Struct SequenceConfig 

pub struct SequenceConfig {
    pub cache_size: i32,
    pub range_min: i64,
    pub range_max: i64,
    pub initial_value: i64,
    pub allow_create: bool,
    pub decrement: bool,
    pub exclusive_create: bool,
    pub wrap: bool,
}

Specifies the attributes of a sequence.

Fields

cache_size: i32

Number of elements cached in the sequence handle (default 20).

default is 0 but the task specifies 20 as the noxu default for pre-fetching. A value of 0 disables caching (every get hits the DB).

range_min: i64

Minimum value for the sequence (default i64::MIN).

range_max: i64

Maximum value for the sequence (default i64::MAX).

initial_value: i64

Initial value when the sequence is first created (default 0).

allow_create: bool

Create the sequence if it does not exist (default false).

decrement: bool

The sequence counts downward when true (default false — counts upward).

exclusive_create: bool

Fail if the sequence already exists (default false).

wrap: bool

Wrap around when the range limit is reached (default false).

Implementations

impl SequenceConfig

pub fn new() -> Self

Creates a SequenceConfig with all defaults.

pub fn with_cache_size(self, cache_size: i32) -> Self

Sets the number of cached elements.

pub fn with_range(self, min: i64, max: i64) -> Self

Sets the sequence range.

pub fn with_range_min(self, min: i64) -> Self

Sets the minimum value of the range.

pub fn with_range_max(self, max: i64) -> Self

Sets the maximum value of the range.

pub fn with_initial_value(self, initial_value: i64) -> Self

Sets the initial value (only effective on creation).

pub fn with_allow_create(self, allow_create: bool) -> Self

Configures whether the sequence is created if missing.

pub fn with_decrement(self, decrement: bool) -> Self

Configures whether the sequence decrements instead of incrementing.

pub fn with_exclusive_create(self, exclusive_create: bool) -> Self

Configures whether to fail when the sequence already exists.

pub fn with_wrap(self, wrap: bool) -> Self

Configures whether to wrap around at the range boundary.

Trait Implementations

impl Clone for SequenceConfig

fn clone(&self) -> SequenceConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SequenceConfig

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

Formats the value using the given formatter.

impl Default for SequenceConfig

fn default() -> Self

Returns the “default value” for a type.