Struct SchemaCache 

pub struct SchemaCache {
    pub tables: Arc<TablesMap>,
    pub relationships: Arc<RelationshipsMap>,
    pub routines: Arc<RoutinesMap>,
    pub timezones: Arc<HashSet<String>>,
    pub representations: Arc<RepresentationsMap>,
    pub media_handlers: Arc<MediaHandlerMap>,
}

Immutable schema cache

This structure holds all introspected database metadata. It is designed to be immutable and wrapped in ArcSwap for lock-free reads.

Fields

tables: Arc<TablesMap>

All tables and views by qualified name

relationships: Arc<RelationshipsMap>

Relationships indexed by source table

routines: Arc<RoutinesMap>

Functions/procedures indexed by qualified name

timezones: Arc<HashSet<String>>

Available PostgreSQL timezones

representations: Arc<RepresentationsMap>

Data representation mappings

media_handlers: Arc<MediaHandlerMap>

Media handler mappings

Implementations

impl SchemaCache

pub fn empty() -> Self

Create an empty schema cache

pub async fn load<I: DbIntrospector + ?Sized>( introspector: &I, config: &AppConfig, ) -> Result<Self, Error>

Load schema cache from database using the provided introspector

pub fn get_table(&self, qi: &QualifiedIdentifier) -> Option<&Table>

Get a table by qualified identifier

pub fn get_table_by_name(&self, schema: &str, name: &str) -> Option<&Table>

Get a table by schema and name

pub fn find_relationships( &self, source: &QualifiedIdentifier, ) -> &[AnyRelationship]

Find relationships from a source table

pub fn find_relationships_to( &self, source: &QualifiedIdentifier, target_name: &str, ) -> Vec<&AnyRelationship>

Find relationships from source to a specific target

pub fn get_routines(&self, qi: &QualifiedIdentifier) -> Option<&[Routine]>

Get a routine by qualified identifier

pub fn get_routines_by_name( &self, schema: &str, name: &str, ) -> Option<&[Routine]>

Get a routine by schema and name

pub fn is_valid_timezone(&self, tz: &str) -> bool

Check if a timezone is valid

pub fn table_count(&self) -> usize

Get the number of tables

pub fn relationship_count(&self) -> usize

Get the number of relationships

pub fn routine_count(&self) -> usize

Get the number of routines

pub fn summary(&self) -> String

Get a summary string for logging

pub fn tables_iter( &self, ) -> impl Iterator<Item = (&QualifiedIdentifier, &Table)>

Iterate over all tables

pub fn tables_in_schema(&self, schema: &str) -> impl Iterator<Item = &Table>

Iterate over all tables in a specific schema

Trait Implementations

impl Clone for SchemaCache

fn clone(&self) -> SchemaCache

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SchemaCache

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

Formats the value using the given formatter.

impl Default for SchemaCache

fn default() -> Self

Returns the “default value” for a type.