Struct GraphLookup 

pub struct GraphLookup {
    pub from: String,
    pub start_with: String,
    pub connect_from_field: String,
    pub connect_to_field: String,
    pub as_field: String,
    pub max_depth: Option<u32>,
    pub depth_field: Option<String>,
    pub restrict_search_with_match: Option<Value>,
}

A $graphLookup stage for recursive lookups.

Fields

from: String

The collection to search.

start_with: String

Starting value expression.

connect_from_field: String

Field to connect from.

connect_to_field: String

Field to connect to.

as_field: String

Output array field.

max_depth: Option<u32>

Maximum recursion depth.

depth_field: Option<String>

Name for depth field.

restrict_search_with_match: Option<Value>

Filter to apply at each level.

Implementations

impl GraphLookup

pub fn new( from: impl Into<String>, start_with: impl Into<String>, connect_from: impl Into<String>, connect_to: impl Into<String>, as_field: impl Into<String>, ) -> Self

Create a new $graphLookup.

pub fn max_depth(self, depth: u32) -> Self

Set maximum recursion depth.

pub fn depth_field(self, field: impl Into<String>) -> Self

Add a depth field to results.

pub fn restrict_search(self, filter: JsonValue) -> Self

Add a filter for each recursion level.

pub fn to_bson(&self) -> JsonValue

Convert to BSON document.

Trait Implementations

impl Clone for GraphLookup

fn clone(&self) -> GraphLookup

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GraphLookup

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for GraphLookup

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for GraphLookup

fn eq(&self, other: &GraphLookup) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for GraphLookup

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for GraphLookup