Struct Orm 

pub struct Orm { /* private fields */ }

Abstraction of database actions, used to manage a Todo structure.

Implementations

impl Orm

pub const fn new(db: Box<dyn DbPersister>) -> Self

Constructor of the Orm struct, which controls instances of structs that implement the DbPersister trait.

pub fn from<T: AsRef<str>>(conn: T) -> Result<Self>

Creates a Orm instance from a connection string.

Errors

• The database persister can’t be obtained.

pub fn is_sqlite(conn: &str) -> bool

Checks if the passed connection string has an Sqlite format.

Panics

• The extension can’t be converted to &str.

pub fn get_persister<T: AsRef<str>>(conn: T) -> Result<Box<dyn DbPersister>>

Returns a struct that implements the DbPersister trait based on a connection string.

Errors

• If the persister can’t be obtained.
• If the connection string is empty.

Trait Implementations

impl Debug for Orm

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

Formats the value using the given formatter.

impl Persister for Orm

fn boxed(self) -> Box<dyn Persister>

Returns the persister instance inside a Box pointer.

fn to_string(&self) -> String

The value that created the Persister instance.

fn create(&self) -> Result<()>

Creates the persister instance.

fn exists(&self) -> Result<bool>

Checks wether a persister exists or not.

fn view(&self) -> Result<()>

Displays the tasks stored at the persister.

fn tasks(&self) -> Result<Vec<Task>>

Returns the tasks collected from the persister’s contents.

fn edit(&self, todo: &Todo, ids: &[u32], action: &Action) -> Result<()>

Edits a persister by managing an Action variant.

fn save(&self, todo: &Todo) -> Result<()>

Saves a Todo instance as the persister’s content.

fn replace(&self, todo: &Todo) -> Result<()>

Replaces the current data with a new Todo instance.

fn clean(&self) -> Result<()>

Deletes all tasks from the persister.

fn remove(&self) -> Result<()>

Removes a persister completely (file or table).