Struct Relation

pub struct Relation<M: Model> { /* private fields */ }

A relation is a collection of records of a particular model and some metadata. associated with the relation.

Relation also implements typical CRUD operations, which are used by the database.

Implementations

impl<M: Model> Relation<M>

pub fn new_with_records(records: Vec<M>) -> Self

Creates a new relation with the given records.

It needs to be public, since it may be used by custom partitioned adapters (.e.g crate::adapters::CsvAdapter uses it).

pub fn is_dirty(&self) -> bool

Is there any unsaved changes?

It needs to be public, since it’s invoked by the code generated with crate::state macro.

pub fn reset_dirty(&mut self)

Resets the dirty flag to false.

It needs to be public, since it’s invoked by the code generated with crate::state macro.

pub fn records(&self) -> &[M]

Returns reference to the records. This is intended to be used only by partitioned adapters.

Trait Implementations

impl<M: Debug + Model> Debug for Relation<M>

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

Formats the value using the given formatter.

impl<M> Default for Relation<M>

where M: Model,

fn default() -> Self

Returns the “default value” for a type.

impl<'de, M: Model> Deserialize<'de> for Relation<M>

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<M: Model> Serialize for Relation<M>

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.