Struct WalLine 

pub struct WalLine {
    pub seq: u64,
    pub prev: u64,
    pub rec: WalRecord,
}

落盘的一行:内容(rec)+ 完整性链(seq/prev)。

内容与链分开存:链字段本身不参与链值计算(否则自引用),链值只覆盖 rec 的 规范 JSON——所以改内容必断链,而 seq/prev 被改则直接对不上物理行号/前文。

Fields

seq: u64

物理行号(1-based)。读回时逐行核对,删行/重排/复制当场现形。

prev: u64

上一行的链值(首行为创世值 0)。

rec: WalRecord

记录本体。

Trait Implementations

impl Clone for WalLine

fn clone(&self) -> WalLine

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WalLine

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for WalLine

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for WalLine

impl PartialEq for WalLine

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for WalLine

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 WalLine