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JsonEachCursor

Struct JsonEachCursor 

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pub struct JsonEachCursor { /* private fields */ }
Expand description

Cursor for json_each virtual table scans.

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impl Default for JsonEachCursor

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fn default() -> JsonEachCursor

Returns the “default value” for a type. Read more
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impl VirtualTableCursor for JsonEachCursor

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fn filter( &mut self, _cx: &Cx, _idx_num: i32, _idx_str: Option<&str>, args: &[SqliteValue], ) -> Result<()>

Begin a scan with the filter parameters chosen by best_index.
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fn next(&mut self, _cx: &Cx) -> Result<()>

Advance to the next row.
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fn eof(&self) -> bool

Whether the cursor has moved past the last row.
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fn column(&self, ctx: &mut ColumnContext, col: i32) -> Result<()>

Write the value of column col into ctx.
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fn rowid(&self) -> Result<i64>

Return the rowid of the current row.

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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,

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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,

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

Mutably borrows from an owned value. Read more
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impl<C> ErasedVtabCursor for C
where C: VirtualTableCursor + 'static,

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fn erased_filter( &mut self, cx: &Cx, idx_num: i32, idx_str: Option<&str>, args: &[SqliteValue], ) -> Result<(), FrankenError>

Begin a scan with filter parameters.
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fn erased_next(&mut self, cx: &Cx) -> Result<(), FrankenError>

Advance to the next row.
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fn erased_eof(&self) -> bool

Whether the cursor has moved past the last row.
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fn erased_column( &self, ctx: &mut ColumnContext, col: i32, ) -> Result<(), FrankenError>

Write the value of column col into ctx.
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fn erased_rowid(&self) -> Result<i64, FrankenError>

Return the rowid of the current row.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> WithSubscriber for T

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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
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fn with_current_subscriber(self) -> WithDispatch<Self>

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