Struct ScanRange

pub struct ScanRange {
    pub eq_conds: Vec<Vec<u8>>,
    pub lower_bound: Option<Bound>,
    pub upper_bound: Option<Bound>,
}

The range to scan, which specifies a consecutive range of the PK and can represent: (Suppose there are N columns in the PK)

• full table scan: Should not occur. Use an empty Vec<ScanRange> instead.
• index range scan: eq_conds includes i (between 0 and N-1, inclusive) values, and lower_bound & upper_bound is the range for the (i+1)th column
• index point get: eq_conds includes N values, and lower_bound & upper_bound are None

Fields

eq_conds: Vec<Vec<u8>>

The i-th element represents the value of the i-th PK column.

lower_bound: Option<Bound>

The lower bound of the next PK column subsequent to those in eq_conds.

upper_bound: Option<Bound>

The upper bound of the next PK column subsequent to those in eq_conds.

Implementations

impl ScanRange

pub fn get_eq_conds(&self) -> &Vec<Vec<u8>>

pub fn get_lower_bound(&self) -> Result<&Bound, PbFieldNotFound>

pub fn get_upper_bound(&self) -> Result<&Bound, PbFieldNotFound>

Trait Implementations

impl Clone for ScanRange

fn clone(&self) -> ScanRange

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ScanRange

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

Formats the value using the given formatter.

impl Default for ScanRange

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ScanRange

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Message for ScanRange

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 ScanRange

fn eq(&self, other: &ScanRange) -> 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 ScanRange

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 ScanRange