Struct SchemaFingerprint 

pub struct SchemaFingerprint { /* private fields */ }

A versioned schema digest. The version travels with the digest rather than being read from the current constant: a fingerprint loaded from storage was computed under whatever format was current when it was written, and drift detection is only sound if a v1 digest keeps reporting v1.

Implementations

impl SchemaFingerprint

pub fn of_table(kind: DatabaseObjectKind, table: &Table) -> Self

Covers only kind, column name, type, and nullability because SchemaTree carries nothing else today. Adding keys or comments later must bump FINGERPRINT_VERSION.

pub fn from_parts(version: u32, digest: &str) -> Result<Self, ContractError>

Rebuilds a fingerprint from its two stored columns. Persistence layers hold the digest and its version separately, so this is how a stored fingerprint comes back without laundering it through the current format version.

pub const fn version(&self) -> u32

The format version this digest was computed under — not necessarily the current FINGERPRINT_VERSION.

pub const fn is_current_format(&self) -> bool

True when this digest was produced by the format the running binary uses. A mismatch means the digest cannot be compared, only recomputed.

pub fn as_str(&self) -> &str

Trait Implementations

impl Clone for SchemaFingerprint

fn clone(&self) -> SchemaFingerprint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SchemaFingerprint

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SchemaFingerprint

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for SchemaFingerprint

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

Formats the value using the given formatter.

impl Eq for SchemaFingerprint

impl Hash for SchemaFingerprint

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 PartialEq for SchemaFingerprint

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for SchemaFingerprint

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 SchemaFingerprint