Struct ID 

pub struct ID(/* private fields */);

A content-addressable identifier for an Entry or other database object.

Wraps a CID v1. Hash algorithm is self-describing via the multihash specification; BLAKE3 is the default for newly-created IDs, but any multihash algorithm present in an existing CID will be preserved through parsing and serialization.

String format uses multibase base32lower encoding, producing CID strings like bafyr4i... (dag-cbor + blake3).

Implementations

impl ID

pub fn from_dagcbor_bytes(data: impl AsRef<[u8]>) -> Self

Creates an ID by hashing DAG-CBOR encoded bytes with BLAKE3.

This is the primary way to create an ID from serialized entry content.

pub fn from_dagcbor_bytes_with(data: impl AsRef<[u8]>, code: Code) -> Self

Creates an ID by hashing DAG-CBOR encoded bytes with the specified algorithm.

pub fn from_bytes(data: impl AsRef<[u8]>) -> Self

Creates an ID by hashing the given bytes with BLAKE3.

Uses the raw codec (0x55) since the bytes are not DAG-CBOR encoded content. Used for opaque blobs and non-entry identifiers.

pub fn from_bytes_with(data: impl AsRef<[u8]>, code: Code) -> Self

Creates an ID by hashing the given bytes with the specified algorithm.

Uses the raw codec (0x55) since the bytes are not DAG-CBOR encoded content.

pub fn parse(s: &str) -> Result<Self>

Parses an ID from its string representation.

Accepts multibase-encoded CID strings (e.g., base32lower bafyr4i...). An empty string produces the default (empty) ID.

pub fn is_empty(&self) -> bool

Returns true if the ID is empty (no CID).

pub fn as_cid(&self) -> Option<&Cid>

Get the underlying CID, if present.

pub fn hash_code(&self) -> Option<u64>

Get the multihash code used for this ID.

Trait Implementations

impl Clone for ID

fn clone(&self) -> ID

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ID

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

Formats the value using the given formatter.

impl Default for ID

fn default() -> ID

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ID

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for ID

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

Formats the value using the given formatter.

impl From<&ID> for ID

fn from(id: &ID) -> Self

Converts to this type from the input type.

impl From<&ID> for String

fn from(id: &ID) -> Self

Converts to this type from the input type.

impl From<Cid<64>> for ID

fn from(cid: Cid) -> Self

Converts to this type from the input type.

impl From<ID> for String

fn from(id: ID) -> Self

Converts to this type from the input type.

impl Hash for ID

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for ID

Deterministic ordering: empty IDs sort before non-empty, then by CID fields.

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for ID

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for ID

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for ID

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for ID

impl StructuralPartialEq for ID