Struct versatile_data::Data

pub struct Data { /* private fields */ }

Implementations

impl Data

pub fn result_condition<'life0, 'life_self, 'async_recursion>( &'life_self self, condition: &'life0 Condition<'_> ) -> Pin<Box<dyn Future<Output = RowSet> + 'async_recursion>>

where 'life0: 'async_recursion, 'life_self: 'async_recursion,

Returns search results by specifying Condition.

pub fn result_field(&self, field_name: &str, condition: &Field) -> RowSet

impl Data

pub fn begin_search(&self) -> Search<'_>

Create a new Search object.

pub fn search_field<'a>( &'a self, field_name: &'a str, condition: &'a Field ) -> Search<'_>

Create a Search object with the field search set.

pub fn search_activity<'a>(&'a self, condition: Activity) -> Search<'_>

Create a Search object with the activity search set.

pub fn search_term<'a>(&'a self, condition: Term) -> Search<'_>

Create a Search object with the term search set.

pub fn search_row<'a>(&'a self, condition: &'a Number) -> Search<'_>

Create a Search object with the row search set.

pub fn search_default(&self) -> Search<'_>

Creates a Search object with a default search set. Searches for data whose term is greater than or equal to the current date and time and is active.

impl Data

pub fn field_names(&self) -> Vec<&String>

Returns a list of field names.

pub fn field_bytes(&self, row: NonZeroU32, name: &str) -> &[u8]

Returns the value of the field with the specified name in the specified row as a slice.

pub fn field_num(&self, row: NonZeroU32, name: &str) -> f64

Returns the value of the field with the specified name in the specified row as a number.

impl Data

pub async fn update(&mut self, operation: Operation) -> Option<NonZeroU32>

Perform operations to register, update, and delete data.

impl Data

pub fn sort(&self, rows: &RowSet, orders: &[Order]) -> Vec<NonZeroU32>

Sort search results.

impl Data

pub fn new<P: AsRef<Path>>(dir: P, option: DataOption) -> Self

Opens the file and creates the Data.

pub fn serial(&self, row: NonZeroU32) -> u32

Returns a serial number.The serial number is incremented each time data is added.

pub fn uuid(&self, row: NonZeroU32) -> Option<u128>

Returns a UUID.UUID is a unique ID that is automatically generated when data is registered..

pub fn uuid_string(&self, row: NonZeroU32) -> Option<String>

Returns the UUID as a string.

pub fn activity(&self, row: NonZeroU32) -> Option<Activity>

Returns the activity value. activity is used to indicate whether data is valid or invalid.

pub fn term_begin(&self, row: NonZeroU32) -> Option<u64>

Returns the start date and time of the data’s validity period.

pub fn term_end(&self, row: NonZeroU32) -> Option<u64>

Returns the end date and time of the data’s validity period.

pub fn last_updated(&self, row: NonZeroU32) -> Option<u64>

Returns the date and time when the data was last updated.

pub fn all(&self) -> RowSet

Returns all rows.