Struct sea_query::query::Search

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pub struct Search { /* private fields */ }

Expand description

For recursive WithQuery WithClauses the traversing order can be specified in some databases that support this functionality.

The clause contains the type of traversal: SearchOrder and the expression that is used to construct the current path.

A query can have both SEARCH and CYCLE clauses.

Setting Self::order and Self::expr is mandatory. The SelectExpr used must specify an alias which will be the name that you can use to order the result of the CommonTableExpression.

Implementations

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impl Search

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pub fn new_from_order_and_expr<EXPR>(order: SearchOrder, expr: EXPR) -> Self where
EXPR: Into<SelectExpr>,

Create a complete Search specification from the SearchOrder and a SelectExpr. The given SelectExpr must have an alias specified.

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pub fn new() -> Self

Constructs a new empty Search.

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pub fn order(&mut self, order: SearchOrder) -> &mut Self

The traversal order to be used.

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pub fn expr<EXPR>(&mut self, expr: EXPR) -> &mut Self where
EXPR: Into<SelectExpr>,

The given SelectExpr must have an alias specified.

The actual expression will be the one used to track the path in the graph.

The alias of the given SelectExpr will be the name of the order column generated by this clause.

Trait Implementations

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impl Clone for Search

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fn clone(&self) -> Search

Returns a copy of the value. Read more

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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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impl Debug for Search

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

Formats the value using the given formatter. Read more

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impl Default for Search

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fn default() -> Search

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

Auto Trait Implementations

impl !RefUnwindSafe for Search

impl Send for Search

impl Sync for Search

impl Unpin for Search

impl !UnwindSafe for Search

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> 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 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> Same<T> for T

type Output = T

Should always be Self

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impl<T> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

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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.

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

fn vzip(self) -> V

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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

Struct sea_query::query::Search

Implementations

impl Search

pub fn new_from_order_and_expr<EXPR>(order: SearchOrder, expr: EXPR) -> Self where EXPR: Into<SelectExpr>,

pub fn new() -> Self

pub fn order(&mut self, order: SearchOrder) -> &mut Self

pub fn expr<EXPR>(&mut self, expr: EXPR) -> &mut Self where EXPR: Into<SelectExpr>,

Trait Implementations

impl Clone for Search

fn clone(&self) -> Search

fn clone_from(&mut self, source: &Self)

impl Debug for Search

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

impl Default for Search

fn default() -> Search

Auto Trait Implementations

impl !RefUnwindSafe for Search

impl Send for Search

impl Sync for Search

impl Unpin for Search

impl !UnwindSafe for Search

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> Instrument for T

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

fn in_current_span(self) -> Instrumented<Self>

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

fn into(self) -> U

impl<T> Same<T> for T

type Output = T

impl<T> ToOwned for T where T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

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<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>,

fn with_current_subscriber(self) -> WithDispatch<Self>

pub fn new_from_order_and_expr<EXPR>(order: SearchOrder, expr: EXPR) -> Self where
EXPR: Into<SelectExpr>,

pub fn expr<EXPR>(&mut self, expr: EXPR) -> &mut Self where
EXPR: Into<SelectExpr>,

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> ToOwned for T where
T: Clone,

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

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

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

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