Struct Catalog 

pub struct Catalog { /* private fields */ }

Logical catalog: a set of TableSchemas keyed by name.

Implementations

impl Catalog

pub fn new(tables: impl IntoIterator<Item = TableSchema>) -> Self

Builds a catalog from an iterator of table schemas.

pub fn table(&self, name: &str) -> Option<&TableSchema>

Looks up a table by name; None if absent.

pub fn require_table(&self, name: &str) -> Result<&TableSchema, SqlError>

Looks up a table by name, returning SqlError::UnknownTable if absent.

Errors

SqlError::UnknownTable when the table is not in the catalog.

pub fn tables(&self) -> impl Iterator<Item = &TableSchema>

Iterates over table schemas in stable (alphabetical) order.

pub fn demo() -> Self

Built-in demo catalog used by examples and integration tests.

Trait Implementations

impl Clone for Catalog

fn clone(&self) -> Catalog

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Catalog

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

Formats the value using the given formatter.

impl Default for Catalog

fn default() -> Catalog

Returns the “default value” for a type.

impl Eq for Catalog

impl PartialEq for Catalog

fn eq(&self, other: &Catalog) -> 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 StructuralPartialEq for Catalog