Struct Where 

pub struct Where {
    pub where: Option<Where>,
}

A Where clause for filtering metadata. A Where clause is a tree of Where clauses, where each node is exactly one of:

• A leaf node representing a direct comparison between a metadata key and a value or list of values.
• A leaf node representing a direct search against document.
• An branch node with a list of children and a way to combine them (AND or OR).

Fields

where: Option<Where>

Trait Implementations

impl Clone for Where

fn clone(&self) -> Where

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Where

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

Formats the value using the given formatter.

impl Default for Where

fn default() -> Self

Returns the “default value” for a type.

impl Message for Where

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited( &self, buf: &mut impl BufMut, ) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq for Where

fn eq(&self, other: &Where) -> 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 TryFrom<Where> for Where

type Error = WhereConversionError

The type returned in the event of a conversion error.

fn try_from(proto_where: Where) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Where> for Where

type Error = WhereConversionError

The type returned in the event of a conversion error.

fn try_from(value: Where) -> Result<Self, Self::Error>

Performs the conversion.

impl StructuralPartialEq for Where