Enum CountMode

pub enum CountMode {
    Count(i64),
    CountExpr(Box<Expression>),
}

Note: A oneof field is inherently optional, whereas individual fields within a oneof cannot be marked as optional. The unset state of count should therefore be checked at the oneof level. Unset is treated as ALL.

Variants

Count(i64)

the amount of records to return use -1 to signal that ALL records should be returned Deprecated: use count_expr instead

CountExpr(Box<Expression>)

Expression evaluated into a non-negative integer specifying the number of records to return. An expression evaluating to null signals that ALL records should be returned. Evaluating to a negative integer should result in an error. Recommended type for count is int64.

Implementations

impl CountMode

pub fn encode(&self, buf: &mut impl BufMut)

Encodes the message to a buffer.

pub fn merge( field: &mut Option<CountMode>, tag: u32, wire_type: WireType, buf: &mut impl Buf, ctx: DecodeContext, ) -> Result<(), DecodeError>

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

pub fn encoded_len(&self) -> usize

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

Trait Implementations

impl Clone for CountMode

fn clone(&self) -> CountMode

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for CountMode

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

Formats the value using the given formatter.

impl PartialEq for CountMode

fn eq(&self, other: &CountMode) -> 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 StructuralPartialEq for CountMode