Struct Collection 

pub struct Collection<T: StandardObject> { /* private fields */ }

Collections.

Implementations

impl<T: StandardObject> Collection<T>

pub fn new() -> Self

pub fn find(&self, search: &StdPropsFilter) -> HashSet<T>

Finds all objects with properties matching the search criteria.

pub fn find_one(&self, search: &StdPropsFilter) -> Option<T>

Finds a single instance of an object with properties matching the search filter.

pub fn insert_one(&mut self, obj: T) -> Result

Inserts a single object into the database.

Errors

• If an object with the same resource id already exists.

pub fn update(&mut self, uid: Uuid, obj: T) -> Result<T>

Updates an object given its universal id. The object’s universal id is not altered from the object passed in for the update, however other aspects of the resource id may be.

Returns

The old value.

Errors

• If an object with the given universal id is not found.

pub fn update_one(&mut self, search: &RidFilter, obj: T) -> Result<T>

Updates the properties a single object.

Returns

Returns the orginal value.

Errors

• If no objects match the search.
• If more than one object matches the search.

pub fn update_or_insert_one( &mut self, search: &RidFilter, obj: T, ) -> Result<Option<T>>

Updates an object if one is found, otherwise inserts it as new. If inserting a new object, the resource id is taken as is. If updating a previous object, the resource id aremains as the original’s.

Returns

None if the object was newly inserted, or Some with the old value if it was updated.

Errors

• If more than one object matches the search.

pub fn len(&self) -> usize

Returns the number of objects in the collection.

Trait Implementations

impl<T: Debug + StandardObject> Debug for Collection<T>

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

Formats the value using the given formatter.