Struct Schema 

pub struct Schema {
    pub schema_id: u64,
    pub columns: Vec<ColumnDef>,
    pub indexes: Vec<IndexDef>,
    pub colocation: Vec<Vec<u16>>,
    pub constraints: TableConstraints,
    pub clustered: bool,
}

Fields

schema_id: u64

columns: Vec<ColumnDef>

indexes: Vec<IndexDef>

colocation: Vec<Vec<u16>>

Phase 18.2: column co-location groups. Each inner Vec lists column IDs that are always accessed together. The run writer writes their pages adjacently so a scan touching those columns benefits from sequential I/O and cache locality. Empty = no co-location (default).

constraints: TableConstraints

Engine-side declarative constraints (unique / FK / check). Empty by default — legacy and Kit-managed tables carry no engine constraints and behave exactly as before. When non-empty, the transaction layer enforces them authoritatively at commit (see crate::database).

clustered: bool

When true, the table is clustered on its primary key: sorted runs are keyed by PK bytes rather than by RowId. Defaults to false.

Implementations

impl Schema

pub fn column(&self, name: &str) -> Option<&ColumnDef>

pub fn primary_key(&self) -> Option<&ColumnDef>

pub fn validate_not_null(&self, columns: &[(u16, Value)]) -> Result<()>

Return an error if any column that is not marked NULLABLE is either missing from columns or present as Value::Null. A column carrying ColumnFlags::AUTO_INCREMENT is exempt when omitted/Null because the engine fills it in before this check runs.

pub fn validate_auto_increment(&self) -> Result<()>

Enforce the AUTO_INCREMENT column contract: at most one such column, and it must be a non-nullable Int64 primary key. Called at table creation time so an invalid schema never reaches the insert path.

pub fn auto_increment_column(&self) -> Option<&ColumnDef>

The single AUTO_INCREMENT column, if any.

Trait Implementations

impl Clone for Schema

fn clone(&self) -> Schema

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Schema

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

Formats the value using the given formatter.

impl Default for Schema

fn default() -> Schema

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Schema

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Schema

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.