State

reifydb_flow_operator_sdk::stateful

Struct State 

Source 
pub struct State<'a> { /* private fields */ }
Expand description

State manager providing state operations with EncodedKey and EncodedValues

Implementations§

Source§

impl<'a> State<'a>

Source

pub fn get(&self, key: &EncodedKey) -> Result<Option<EncodedValues>>

Get a value from state by key

Source

pub fn set(&mut self, key: &EncodedKey, value: &EncodedValues) -> Result<()>

Set a value in state by key

Source

pub fn remove(&mut self, key: &EncodedKey) -> Result<()>

Remove a value from state by key

Source

pub fn contains(&self, key: &EncodedKey) -> Result<bool>

Check if a key exists in state

Source

pub fn clear(&mut self) -> Result<()>

Clear all state for this operator

Source

pub fn scan_prefix( &self, prefix: &EncodedKey, ) -> Result<Vec<(EncodedKey, EncodedValues)>>

Scan state entries with a given key prefix

Source

pub fn keys_with_prefix(&self, prefix: &EncodedKey) -> Result<Vec<EncodedKey>>

Get all keys with a given prefix

Auto Trait Implementations§

§

impl<'a> Freeze for State<'a>

§

impl<'a> RefUnwindSafe for State<'a>

§

impl<'a> !Send for State<'a>

§

impl<'a> !Sync for State<'a>

§

impl<'a> Unpin for State<'a>

§

impl<'a> !UnwindSafe for State<'a>

Blanket Implementations§

Source§

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

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

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

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

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

Source§

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

Mutably borrows from an owned value. Read more
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

impl<T> Instrument for T

Source§

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

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
Source§

fn in_current_span(self) -> Instrumented<Self>

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

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

Source§

fn into(self) -> U

Calls U::from(self).

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

Source§

impl<T> Pointable for T

Source§

const ALIGN: usize

The alignment of pointer.
Source§

type Init = T

The type for initializers.
Source§

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
Source§

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
Source§

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
Source§

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
Source§

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

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
Source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

Source§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
Source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
Source§

impl<T> WithSubscriber for T

Source§

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
Source§

fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more