Struct BitmapMeta 

pub struct BitmapMeta {
    pub base: KeyMeta,
}

位图结构元数据（对标 Apache Kvrocks BitmapMetadata）

Fields

base: KeyMeta

Implementations

impl BitmapMeta

pub const ENCODED_SIZE: usize = crate::meta::KeyMeta::ENCODED_SIZE

pub const KVROCKS_ENCODED_SIZE: usize = crate::meta::KeyMeta::KVROCKS_COMPLEX_ENCODED_SIZE

pub const fn new(expire_at: u64, version: u64, size: u64) -> Self

pub fn new_with_version(expire_at: u64, size: u64) -> Self

pub const fn size(&self) -> u64

pub const fn version(&self) -> u64

pub const fn expire_at(&self) -> u64

pub const fn ttl(&self, now_ms: u64) -> i64

pub const fn is_empty(&self) -> bool

pub const fn is_expired(&self, now_ms: u64) -> bool

pub fn encode(&self) -> [u8; 26]

pub fn encode_kvrocks(&self) -> Vec<u8>

pub fn decode(bytes: &[u8]) -> Option<Self>

Trait Implementations

impl Clone for BitmapMeta

fn clone(&self) -> BitmapMeta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for BitmapMeta

impl Debug for BitmapMeta

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

Formats the value using the given formatter.

impl<'__de> Decode<'__de> for BitmapMeta

where '__de:,

impl Encode for BitmapMeta

impl Eq for BitmapMeta

impl MetaOps for BitmapMeta

const TAG: &[u8]

Metadata key tag slice (e.g. b"sm", b"hm"). meta key 标签（如 b"sm", b"hm"），用于 check_key_not_other_type

type EncodedBytes = [u8; 26]

fn decode(bytes: &[u8]) -> Option<Self>

fn is_expired(&self, now_ms: u64) -> bool

fn encode_bytes(&self) -> Self::EncodedBytes

Encoded bytes slice for storage write operations without heap allocation. 编码后的字节，用于写入存储（零堆分配）

fn base(&self) -> &KeyMeta

Returns immutable reference to base KeyMeta. 获取 base 引用（访问 expire_at / ttl 等通用字段）

fn base_mut(&mut self) -> &mut KeyMeta

Returns mutable reference to base KeyMeta. 获取 base 可变引用（修改 expire_at）

impl PartialEq for BitmapMeta

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for BitmapMeta