Struct Db &nbsp; Copy item path

impl Db

pub(super) fn new(database: &Database) -> Self

pub(super) fn upsert_entry( &self, lang: &str, entry: &DictionaryEntry, ) -> Result<(), Error>

Inserts or replaces a single monolingual metadata entry.

The updated date is stored as a Unix epoch integer (midnight UTC).

§Errors

Returns an error if the database write fails.

pub(super) fn get_entry( &self, lang: &str, ) -> Result<Option<DictionaryEntry>, Error>

Retrieves the cached metadata entry for a single language.

Returns None if no entry for lang has been cached yet.

§Errors

Returns an error if the database query fails.

pub(super) fn get_all_entries( &self, ) -> Result<Vec<(String, DictionaryEntry)>, Error>

Retrieves all cached monolingual metadata entries.

Returns an empty Vec if no entries have been cached yet.

§Errors

Returns an error if the database query fails or any stored updated timestamp cannot be converted to a NaiveDate.

pub(super) fn get_most_recent_cached_at( &self, ) -> Result<Option<UnixTimestamp>, Error>

Returns the most recent cached_at value across all metadata entries.

Used to determine whether the metadata cache is stale relative to the API’s Last-Modified header.

§Errors

Returns an error if the database query fails.

pub(super) fn record_install( &self, lang: &str, installed_version: UnixTimestamp, ) -> Result<(), Error>

Records that a dictionary was installed with the given version.

If a record already exists for lang, it is updated in place.

§Errors

Returns an error if the database write fails.

pub(super) fn remove_installed(&self, lang: &str) -> Result<(), Error>

Removes the installed record for a language.

Called when a dictionary is deleted from the device.

§Errors

Returns an error if the database write fails.

pub(super) fn is_update_available(&self, lang: &str) -> Result<bool, Error>

Returns true if a newer version of the dictionary is available.

Compares updated from reader_dict_monolingual_metadata against installed_version from reader_dict_monolingual_installed via a single SQL JOIN. Returns false if the language is not installed or has no metadata.

§Errors

Returns an error if the database query fails.

Trait Implementations§

impl Clone for Db

fn clone(&self) -> Db

Returns a duplicate of the value. Read more

1.0.0 · Source§

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

Performs copy-assignment from source. Read more

impl Debug for Db

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

impl !UnwindSafe for Db

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> CloneToUninit for T
where T: Clone,

unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. Read more

impl<T> Downcast for T
where T: Any,

fn into_any(self: Box<T>) -> Box<dyn Any>

Converts Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>, which can then be downcast into Box<dyn ConcreteType> where ConcreteType implements Trait.

fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Converts Rc<Trait> (where Trait: Downcast) to Rc<Any>, which can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.

fn as_any(&self) -> &(dyn Any + 'static)

Converts &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.

fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Converts &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.

impl<T> DowncastSend for T
where T: Any + Send,

fn into_any_send(self: Box<T>) -> Box<dyn Any + Send>

Converts Box<Trait> (where Trait: DowncastSend) to Box<dyn Any + Send>, which can then be downcast into Box<ConcreteType> where ConcreteType implements Trait.

impl<T> DowncastSync for T
where T: Any + Send + Sync,

fn into_any_sync(self: Box<T>) -> Box<dyn Any + Sync + Send>

Converts Box<Trait> (where Trait: DowncastSync) to Box<dyn Any + Send + Sync>, which can then be downcast into Box<ConcreteType> where ConcreteType implements Trait.

fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send>

Converts Arc<Trait> (where Trait: DowncastSync) to Arc<Any>, which can then be downcast into Arc<ConcreteType> where ConcreteType implements Trait.

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

impl<T, U> Into for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> IntoEither for T

fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more