Struct SerialRule 

pub struct SerialRule {
    pub key: String,
    pub format: String,
    pub cycle: CyclePeriod,
    pub initial_value: u64,
    pub step: IncrementStrategy,
    pub is_enabled: bool,
}

业务单号规则定义

一条规则 = 格式模板 + 循环周期 + 计数策略 + 启用状态。 可通过静态配置（config.toml）或运行时 API（register_rule）注册。 禁用后的规则调用 generate() 将返回 SerialError::RuleDisabled。

Fields

key: String

规则唯一标识，如 “order”、“contract”、“purchase”

format: String

单号格式，如 “ORD{YYYY}{MM}{DD}{SEQ:8}”

cycle: CyclePeriod

循环周期

initial_value: u64

计数器初始值（每次周期重置后从此值开始）

step: IncrementStrategy

增量策略

is_enabled: bool

是否启用（默认 true）。禁用后 generate() 返回错误。

Implementations

impl SerialRule

pub fn new(key: impl Into<String>, format: impl Into<String>) -> Self

创建新规则（默认启用）

pub fn with_cycle(self, cycle: CyclePeriod) -> Self

设置循环周期

pub fn with_initial_value(self, val: u64) -> Self

设置初始值

pub fn with_step(self, step: IncrementStrategy) -> Self

设置增量策略

Trait Implementations

impl Clone for SerialRule

fn clone(&self) -> SerialRule

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SerialRule

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SerialRule

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for SerialRule

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

where __S: Serializer,

Serialize this value into the given Serde serializer.