Struct odbc_api::RowSetCursor

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pub struct RowSetCursor<C: Cursor, B> { /* private fields */ }

Expand description

A row set cursor iterates in blocks over row sets, filling them in buffers, instead of iterating the result set row by row. This is usually much faster.

Implementations

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impl<C, B> RowSetCursor<C, B> where
C: Cursor,

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pub fn fetch(&mut self) -> Result<Option<&B>, Error>

Fills the bound buffer with the next row set.

Return

None if the result set is empty and all row sets have been extracted. Some with a reference to the internal buffer otherwise.

Trait Implementations

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impl<C, B> Drop for RowSetCursor<C, B> where
C: Cursor,

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fn drop(&mut self)

Executes the destructor for this type. Read more

Auto Trait Implementations

impl<C, B> RefUnwindSafe for RowSetCursor<C, B> where
B: RefUnwindSafe,
C: RefUnwindSafe,

impl<C, B> Send for RowSetCursor<C, B> where
B: Send,
C: Send,

impl<C, B> Sync for RowSetCursor<C, B> where
B: Sync,
C: Sync,

impl<C, B> Unpin for RowSetCursor<C, B> where
B: Unpin,
C: Unpin,

impl<C, B> UnwindSafe for RowSetCursor<C, B> where
B: UnwindSafe,
C: UnwindSafe,

Blanket Implementations

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

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

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · 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.

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

Struct odbc_api::RowSetCursor

Implementations

impl<C, B> RowSetCursor<C, B> where
C: Cursor,

pub fn fetch(&mut self) -> Result<Option<&B>, Error>

Return

Trait Implementations

impl<C, B> Drop for RowSetCursor<C, B> where
C: Cursor,

fn drop(&mut self)

Auto Trait Implementations

impl<C, B> RefUnwindSafe for RowSetCursor<C, B> where
B: RefUnwindSafe,
C: RefUnwindSafe,

impl<C, B> Send for RowSetCursor<C, B> where
B: Send,
C: Send,

impl<C, B> Sync for RowSetCursor<C, B> where
B: Sync,
C: Sync,

impl<C, B> Unpin for RowSetCursor<C, B> where
B: Unpin,
C: Unpin,

impl<C, B> UnwindSafe for RowSetCursor<C, B> where
B: UnwindSafe,
C: UnwindSafe,

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

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

type Error = Infallible

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

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

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

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

Struct odbc_api::RowSetCursor

Implementations

impl<C, B> RowSetCursor<C, B> where C: Cursor,

pub fn fetch(&mut self) -> Result<Option<&B>, Error>

Return

Trait Implementations

impl<C, B> Drop for RowSetCursor<C, B> where C: Cursor,

fn drop(&mut self)

Auto Trait Implementations

impl<C, B> RefUnwindSafe for RowSetCursor<C, B> where B: RefUnwindSafe, C: RefUnwindSafe,

impl<C, B> Send for RowSetCursor<C, B> where B: Send, C: Send,

impl<C, B> Sync for RowSetCursor<C, B> where B: Sync, C: Sync,

impl<C, B> Unpin for RowSetCursor<C, B> where B: Unpin, C: Unpin,

impl<C, B> UnwindSafe for RowSetCursor<C, B> where B: UnwindSafe, C: UnwindSafe,

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

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

type Error = Infallible

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

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

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

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

impl<C, B> RowSetCursor<C, B> where
C: Cursor,

impl<C, B> Drop for RowSetCursor<C, B> where
C: Cursor,

impl<C, B> RefUnwindSafe for RowSetCursor<C, B> where
B: RefUnwindSafe,
C: RefUnwindSafe,

impl<C, B> Send for RowSetCursor<C, B> where
B: Send,
C: Send,

impl<C, B> Sync for RowSetCursor<C, B> where
B: Sync,
C: Sync,

impl<C, B> Unpin for RowSetCursor<C, B> where
B: Unpin,
C: Unpin,

impl<C, B> UnwindSafe for RowSetCursor<C, B> where
B: UnwindSafe,
C: UnwindSafe,

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

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

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

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

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

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