Struct Static File Cursor &nbsp; Copy item path

impl<'a> StaticFileCursor<'a>

pub fn new( jar: &'a NippyJar<SegmentHeader>, reader: Arc<DataReader>, ) -> Result<StaticFileCursor<'a>, ProviderError>

Returns a new StaticFileCursor.

pub fn number(&self) -> Option<u64>

Returns the current BlockNumber or TxNumber of the cursor depending on the kind of static file segment.

pub fn get( &mut self, key_or_num: KeyOrNumber<'_>, mask: usize, ) -> Result<Option<Vec<&[u8]>>, ProviderError>

Gets a row of values.

pub fn get_one<M>( &mut self, key_or_num: KeyOrNumber<'_>, ) -> Result<Option<<M as ColumnSelectorOne>::FIRST>, ProviderError>
where M: ColumnSelectorOne,

Gets one column value from a row.

pub fn get_two<M>( &mut self, key_or_num: KeyOrNumber<'_>, ) -> Result<Option<(<M as ColumnSelectorTwo>::FIRST, <M as ColumnSelectorTwo>::SECOND)>, ProviderError>
where M: ColumnSelectorTwo,

Gets two column values from a row.

pub fn get_three<M>( &mut self, key_or_num: KeyOrNumber<'_>, ) -> Result<Option<(<M as ColumnSelectorThree>::FIRST, <M as ColumnSelectorThree>::SECOND, <M as ColumnSelectorThree>::THIRD)>, ProviderError>
where M: ColumnSelectorThree,

Gets three column values from a row.

Methods from Deref<Target = NippyJarCursor<'a, SegmentHeader>>§

pub fn jar(&self) -> &NippyJar<H>

Returns a reference to the related NippyJar

pub fn row_index(&self) -> u64

Returns current row index of the cursor

pub fn reset(&mut self)

Resets cursor to the beginning.

pub fn row_by_number( &mut self, row: usize, ) -> Result<Option<Vec<&[u8]>>, NippyJarError>

Returns a row by its number.

pub fn next_row(&mut self) -> Result<Option<Vec<&[u8]>>, NippyJarError>

Returns the current value and advances the row.

pub fn row_by_number_with_cols( &mut self, row: usize, mask: usize, ) -> Result<Option<Vec<&[u8]>>, NippyJarError>

Returns a row by its number by using a mask to only read certain columns from the row.

pub fn next_row_with_cols( &mut self, mask: usize, ) -> Result<Option<Vec<&[u8]>>, NippyJarError>

Returns the current value and advances the row.

Uses a mask to only read certain columns from the row.

Trait Implementations§

impl<'a> Debug for StaticFileCursor<'a>

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

Formats the value using the given formatter. Read more

impl<'a> Deref for StaticFileCursor<'a>

type Target = NippyJarCursor<'a, SegmentHeader>

The resulting type after dereferencing.

fn deref(&self) -> &<StaticFileCursor<'a> as Deref>::Target

Dereferences the value.

impl<'a> DerefMut for StaticFileCursor<'a>

fn deref_mut(&mut self) -> &mut <StaticFileCursor<'a> as Deref>::Target

Mutably dereferences the value.

Auto Trait Implementations§

impl<'a> UnwindSafe for StaticFileCursor<'a>

Blanket Implementations§

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Causes self to use its LowerExp implementation when Debug-formatted.

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Causes self to use its LowerHex implementation when Debug-formatted.

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fn from(t: T) -> T

Returns the argument unchanged.

impl<TxEnv, T> FromRecoveredTx<&T> for TxEnv
where TxEnv: FromRecoveredTx<T>,

fn from_recovered_tx(tx: &&T, sender: Address) -> TxEnv

Builds a TxEnv from a transaction and a sender address.

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where TxEnv: FromTxWithEncoded<T>,

fn from_encoded_tx(tx: &&T, sender: Address, encoded: Bytes) -> TxEnv

Builds a TxEnv from a transaction, its sender, and encoded transaction bytes.

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Remove trailing slashes from paths. Read more

fn append_trailing_slash(self) -> NormalizePath<Self>
where Self: Sized,

Append trailing slash to paths. Read more

impl<T> Tap for T

fn tap(self, func: impl FnOnce(&Self)) -> Self

Immutable access to a value. Read more

fn tap_mut(self, func: impl FnOnce(&mut Self)) -> Self

Mutable access to a value. Read more

fn tap_borrow(self, func: impl FnOnce(&B)) -> Self
where Self: Borrow, B: ?Sized,

Immutable access to the Borrow of a value. Read more

fn tap_borrow_mut(self, func: impl FnOnce(&mut B)) -> Self
where Self: BorrowMut, B: ?Sized,

Mutable access to the BorrowMut of a value. Read more

fn tap_ref<R>(self, func: impl FnOnce(&R)) -> Self
where Self: AsRef<R>, R: ?Sized,

Immutable access to the AsRef<R> view of a value. Read more

fn tap_ref_mut<R>(self, func: impl FnOnce(&mut R)) -> Self
where Self: AsMut<R>, R: ?Sized,

Mutable access to the AsMut<R> view of a value. Read more

fn tap_deref<T>(self, func: impl FnOnce(&T)) -> Self
where Self: Deref<Target = T>, T: ?Sized,

Immutable access to the Deref::Target of a value. Read more

fn tap_deref_mut<T>(self, func: impl FnOnce(&mut T)) -> Self
where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Mutable access to the Deref::Target of a value. Read more

fn tap_dbg(self, func: impl FnOnce(&Self)) -> Self

Calls .tap() only in debug builds, and is erased in release builds.

fn tap_mut_dbg(self, func: impl FnOnce(&mut Self)) -> Self

Calls .tap_mut() only in debug builds, and is erased in release builds.

fn tap_borrow_dbg(self, func: impl FnOnce(&B)) -> Self
where Self: Borrow, B: ?Sized,

Calls .tap_borrow() only in debug builds, and is erased in release builds.

fn tap_borrow_mut_dbg(self, func: impl FnOnce(&mut B)) -> Self
where Self: BorrowMut, B: ?Sized,

Calls .tap_borrow_mut() only in debug builds, and is erased in release builds.

fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self
where Self: AsRef<R>, R: ?Sized,

Calls .tap_ref() only in debug builds, and is erased in release builds.

fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self
where Self: AsMut<R>, R: ?Sized,

Calls .tap_ref_mut() only in debug builds, and is erased in release builds.

fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self
where Self: Deref<Target = T>, T: ?Sized,

Calls .tap_deref() only in debug builds, and is erased in release builds.

fn tap_deref_mut_dbg<T>(self, func: impl FnOnce(&mut T)) -> Self
where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Calls .tap_deref_mut() only in debug builds, and is erased in release builds.

impl<T> TryConv for T

fn try_conv<T>(self) -> Result<T, Self::Error>
where Self: TryInto<T>,

Attempts to convert self into T using TryInto<T>. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

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

Performs the conversion.

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

type Error = >::Error

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

fn vzip(self) -> V

impl<T> WithSubscriber for T

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

fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ

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

impl<T> WithSubscriber for T

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

fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ

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

impl<T> ErasedDestructor for T
where T: 'static,

impl<T> MaybeDebug for T
where T: Debug,

impl<T> MaybeSend for T
where T: Send,