Struct Schema 

pub struct Schema { /* private fields */ }

The schema of one keychain.

Implementations

impl Schema

pub fn bootstrap() -> Self

Built-in definitions for the four schema relations, enough to read the schema tables and learn everything else.

pub fn from_tables(tables: &[Table]) -> Result<Self>

Read the schema out of a keychain’s own schema tables.

pub fn relation(&self, record_type: RecordType) -> Option<&Relation>

pub fn relations(&self) -> impl Iterator<Item = &Relation>

pub fn attribute_formats(&self, record_type: RecordType) -> Vec<AttributeFormat>

Attribute formats in record order. Empty when the relation is unknown, which makes such a record parse as having no attributes.

pub fn attribute<'r>( &self, record_type: RecordType, record: &'r Record, name: &str, ) -> Option<&'r Value>

Look up a value on a record by attribute name.

pub fn named_attributes<'r>( &self, record_type: RecordType, record: &'r Record, ) -> Vec<(&str, &'r Value)>

Every named attribute of a record that has a value.

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.