reddb::storage::query::ast

Struct GraphQueryBuilder

pub struct GraphQueryBuilder { /* private fields */ }

Expand description

Builder for graph queries

Implementations§

Source §

impl GraphQueryBuilder

Source

pub fn new() -> GraphQueryBuilder

Create a new builder

Source

pub fn node(self, pattern: NodePattern) -> GraphQueryBuilder

Add node pattern

Source

pub fn edge(self, pattern: EdgePattern) -> GraphQueryBuilder

Add edge pattern

Source

pub fn filter(self, f: Filter) -> GraphQueryBuilder

Add filter

Source

pub fn alias(self, alias: &str) -> GraphQueryBuilder

Set outer alias

Source

pub fn limit(self, n: u64) -> GraphQueryBuilder

Set row limit

Source

pub fn return_field(self, field: FieldRef) -> GraphQueryBuilder

Add return projection

Source

pub fn build(self) -> QueryExpr

Build the query expression

Trait Implementations§

Source §

impl Default for GraphQueryBuilder

Source §

fn default() -> GraphQueryBuilder

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

Auto Trait Implementations§

§

impl UnwindSafe for GraphQueryBuilder

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 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> IntoEither for T

Source §

fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

Source §

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

Source §