Struct MemoryStore 

pub struct MemoryStore { /* private fields */ }

A resource store backed by an ordered list of items.

Items keep the order they were created in, which is the order the collection lists them in when no sort is asked for.

Implementations

impl MemoryStore

pub fn new() -> Self

An empty store whose identifier field is id.

pub fn with_id_field<S: Into<String>>(id_field: S) -> Self

An empty store whose identifier field has another name.

pub fn seeded<I: IntoIterator<Item = LinoValue>>(items: I) -> Self

A store seeded with items.

Examples

use lino_rest_api::store::MemoryStore;
use lino_rest_api::value::{get, int, object, string};

let store = MemoryStore::seeded([object([("title", string("Ship it"))])]);
assert_eq!(get(&store.read("1").unwrap(), "id"), Some(&int(1)));

pub fn insert(&self, body: &LinoValue) -> LinoValue

Create an item without awaiting, for seeding and for tests.

pub fn read(&self, identifier: &str) -> Option<LinoValue>

Read an item without awaiting, for tests.

pub fn items(&self) -> Vec<LinoValue>

Every item, in creation order.

pub fn len(&self) -> usize

How many items the store holds.

pub fn is_empty(&self) -> bool

Whether the store holds no item.

pub fn clear(&self)

Remove every item and restart the identifier sequence.

Trait Implementations

impl Debug for MemoryStore

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

Formats the value using the given formatter.

impl Default for MemoryStore

fn default() -> MemoryStore

Returns the “default value” for a type.

impl Store for MemoryStore

fn id_field(&self) -> &str

The field of an item that holds its identifier.

fn list<'life0, 'life1, 'async_trait>( &'life0 self, query: &'life1 CollectionQuery, ) -> Pin<Box<dyn Future<Output = Result<LinoValue, LinoHttpError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Run a collection query, returning a collection envelope.

fn get<'life0, 'life1, 'async_trait>( &'life0 self, identifier: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<Option<LinoValue>, LinoHttpError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Read one item, or None when it does not exist.

fn create<'life0, 'life1, 'async_trait>( &'life0 self, body: &'life1 LinoValue, ) -> Pin<Box<dyn Future<Output = Result<LinoValue, LinoHttpError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Create an item, assigning an identifier when the body carries none.

fn update<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, identifier: &'life1 str, body: &'life2 LinoValue, ) -> Pin<Box<dyn Future<Output = Result<Option<LinoValue>, LinoHttpError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Replace an item, or None when it does not exist.

fn patch<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, identifier: &'life1 str, body: &'life2 LinoValue, ) -> Pin<Box<dyn Future<Output = Result<Option<LinoValue>, LinoHttpError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Merge changes into an item, or None when it does not exist.

fn remove<'life0, 'life1, 'async_trait>( &'life0 self, identifier: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<bool, LinoHttpError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Delete an item, reporting whether one was deleted.