Struct TransactOptions 

pub struct TransactOptions {
    pub isolation_level: Option<IsolationLevel>,
    pub read_only: bool,
    pub timeout: Option<Duration>,
    pub max_nesting_depth: u32,
    pub propagation: PropagationBehavior,
}

Fields

isolation_level: Option<IsolationLevel>

read_only: bool

timeout: Option<Duration>

max_nesting_depth: u32

H-8 修复：嵌套事务（保存点）最大深度限制

默认 DEFAULT_MAX_NESTING_DEPTH（8），防止递归事务导致数据库连接耗尽或 保存点栈溢出。设为 0 表示禁用嵌套事务（首次 savepoint() 即报错）。

propagation: PropagationBehavior

事务传播行为（默认 Required）

Implementations

impl TransactOptions

pub fn with_isolation(self, level: IsolationLevel) -> Self

pub fn read_only(self) -> Self

pub fn with_timeout(self, timeout: Duration) -> Self

pub fn with_max_nesting_depth(self, max_depth: u32) -> Self

H-8 修复：设置最大嵌套深度

pub fn with_propagation(self, propagation: PropagationBehavior) -> Self

设置事务传播行为

Trait Implementations

impl Default for TransactOptions

fn default() -> Self

Returns the “default value” for a type.