Enum ValueRef

pub enum ValueRef<'a> {
    Null,
    Boolean(bool),
    UInt8(u8),
    UInt16(u16),
    UInt32(u32),
    UInt64(u64),
    Int8(i8),
    Int16(i16),
    Int32(i32),
    Int64(i64),
    Float32(OrderedF32),
    Float64(OrderedF64),
    Decimal128(Decimal128),
    String(&'a str),
    Binary(&'a [u8]),
    Date(Date),
    DateTime(DateTime),
    Timestamp(Timestamp),
    Time(Time),
    Duration(Duration),
    IntervalYearMonth(IntervalYearMonth),
    IntervalDayTime(IntervalDayTime),
    IntervalMonthDayNano(IntervalMonthDayNano),
    List(ListValueRef<'a>),
}

Reference to Value.

Variants

Null

Boolean(bool)

UInt8(u8)

UInt16(u16)

UInt32(u32)

UInt64(u64)

Int8(i8)

Int16(i16)

Int32(i32)

Int64(i64)

Float32(OrderedF32)

Float64(OrderedF64)

Decimal128(Decimal128)

String(&'a str)

Binary(&'a [u8])

Date(Date)

DateTime(DateTime)

Timestamp(Timestamp)

Time(Time)

Duration(Duration)

IntervalYearMonth(IntervalYearMonth)

IntervalDayTime(IntervalDayTime)

IntervalMonthDayNano(IntervalMonthDayNano)

List(ListValueRef<'a>)

Implementations

impl<'a> ValueRef<'a>

pub fn data_type(&self) -> ConcreteDataType

Returns data type of the value.

Panics

Panics if the data type is not supported.

pub fn is_null(&self) -> bool

Returns true if this is null.

pub fn as_binary(&self) -> Result<Option<&'a [u8]>>

Cast itself to binary slice.

pub fn as_string(&self) -> Result<Option<&'a str>>

Cast itself to string slice.

pub fn as_boolean(&self) -> Result<Option<bool>>

Cast itself to boolean.

pub fn as_i8(&self) -> Result<Option<i8>>

pub fn as_u8(&self) -> Result<Option<u8>>

pub fn as_i16(&self) -> Result<Option<i16>>

pub fn as_u16(&self) -> Result<Option<u16>>

pub fn as_i32(&self) -> Result<Option<i32>>

pub fn as_u32(&self) -> Result<Option<u32>>

pub fn as_i64(&self) -> Result<Option<i64>>

pub fn as_u64(&self) -> Result<Option<u64>>

pub fn as_f32(&self) -> Result<Option<f32>>

pub fn as_f64(&self) -> Result<Option<f64>>

pub fn as_date(&self) -> Result<Option<Date>>

Cast itself to [Date].

pub fn as_datetime(&self) -> Result<Option<DateTime>>

Cast itself to [DateTime].

pub fn as_timestamp(&self) -> Result<Option<Timestamp>>

Cast itself to [Timestamp].

pub fn as_time(&self) -> Result<Option<Time>>

Cast itself to [Time].

pub fn as_duration(&self) -> Result<Option<Duration>>

pub fn as_interval_year_month(&self) -> Result<Option<IntervalYearMonth>>

Cast itself to [IntervalYearMonth].

pub fn as_interval_day_time(&self) -> Result<Option<IntervalDayTime>>

Cast itself to [IntervalDayTime].

pub fn as_interval_month_day_nano(&self) -> Result<Option<IntervalMonthDayNano>>

Cast itself to [IntervalMonthDayNano].

pub fn as_list(&self) -> Result<Option<ListValueRef<'_>>>

Cast itself to ListValueRef.

pub fn as_decimal128(&self) -> Result<Option<Decimal128>>

Cast itself to [Decimal128].

impl ValueRef<'_>

pub fn data_size(&self) -> usize

Returns the size of the underlying data in bytes, The size is estimated and only considers the data size.

Trait Implementations

impl<'a> Clone for ValueRef<'a>

fn clone(&self) -> ValueRef<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for ValueRef<'a>

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

Formats the value using the given formatter.

impl<'a> From<&'a [u8]> for ValueRef<'a>

fn from(bytes: &'a [u8]) -> ValueRef<'a>

Converts to this type from the input type.

impl<'a> From<&'a str> for ValueRef<'a>

fn from(string: &'a str) -> ValueRef<'a>

Converts to this type from the input type.

impl From<Date> for ValueRef<'_>

fn from(value: Date) -> Self

Converts to this type from the input type.

impl From<DateTime> for ValueRef<'_>

fn from(value: DateTime) -> Self

Converts to this type from the input type.

impl From<Decimal128> for ValueRef<'_>

fn from(value: Decimal128) -> Self

Converts to this type from the input type.

impl From<Duration> for ValueRef<'_>

fn from(value: Duration) -> Self

Converts to this type from the input type.

impl From<DurationMicrosecond> for ValueRef<'static>

fn from(t: DurationMicrosecond) -> Self

Converts to this type from the input type.

impl From<DurationMillisecond> for ValueRef<'static>

fn from(t: DurationMillisecond) -> Self

Converts to this type from the input type.

impl From<DurationNanosecond> for ValueRef<'static>

fn from(t: DurationNanosecond) -> Self

Converts to this type from the input type.

impl From<DurationSecond> for ValueRef<'static>

fn from(t: DurationSecond) -> Self

Converts to this type from the input type.

impl From<IntervalDayTime> for ValueRef<'_>

fn from(value: IntervalDayTime) -> Self

Converts to this type from the input type.

impl From<IntervalMonthDayNano> for ValueRef<'_>

fn from(value: IntervalMonthDayNano) -> Self

Converts to this type from the input type.

impl From<IntervalYearMonth> for ValueRef<'_>

fn from(value: IntervalYearMonth) -> Self

Converts to this type from the input type.

impl From<Option<Date>> for ValueRef<'_>

fn from(value: Option<Date>) -> Self

Converts to this type from the input type.

impl From<Option<DateTime>> for ValueRef<'_>

fn from(value: Option<DateTime>) -> Self

Converts to this type from the input type.

impl From<Option<Decimal128>> for ValueRef<'_>

fn from(value: Option<Decimal128>) -> Self

Converts to this type from the input type.

impl From<Option<Duration>> for ValueRef<'_>

fn from(value: Option<Duration>) -> Self

Converts to this type from the input type.

impl From<Option<IntervalDayTime>> for ValueRef<'_>

fn from(value: Option<IntervalDayTime>) -> Self

Converts to this type from the input type.

impl From<Option<IntervalMonthDayNano>> for ValueRef<'_>

fn from(value: Option<IntervalMonthDayNano>) -> Self

Converts to this type from the input type.

impl From<Option<IntervalYearMonth>> for ValueRef<'_>

fn from(value: Option<IntervalYearMonth>) -> Self

Converts to this type from the input type.

impl<'a> From<Option<ListValueRef<'a>>> for ValueRef<'a>

fn from(list: Option<ListValueRef<'_>>) -> ValueRef<'_>

Converts to this type from the input type.

impl From<Option<Time>> for ValueRef<'_>

fn from(value: Option<Time>) -> Self

Converts to this type from the input type.

impl From<Option<Timestamp>> for ValueRef<'_>

fn from(value: Option<Timestamp>) -> Self

Converts to this type from the input type.

impl From<Option<bool>> for ValueRef<'_>

fn from(value: Option<bool>) -> Self

Converts to this type from the input type.

impl From<Option<f32>> for ValueRef<'_>

fn from(value: Option<f32>) -> Self

Converts to this type from the input type.

impl From<Option<f64>> for ValueRef<'_>

fn from(value: Option<f64>) -> Self

Converts to this type from the input type.

impl From<Option<i16>> for ValueRef<'_>

fn from(value: Option<i16>) -> Self

Converts to this type from the input type.

impl From<Option<i32>> for ValueRef<'_>

fn from(value: Option<i32>) -> Self

Converts to this type from the input type.

impl From<Option<i64>> for ValueRef<'_>

fn from(value: Option<i64>) -> Self

Converts to this type from the input type.

impl From<Option<i8>> for ValueRef<'_>

fn from(value: Option<i8>) -> Self

Converts to this type from the input type.

impl From<Option<u16>> for ValueRef<'_>

fn from(value: Option<u16>) -> Self

Converts to this type from the input type.

impl From<Option<u32>> for ValueRef<'_>

fn from(value: Option<u32>) -> Self

Converts to this type from the input type.

impl From<Option<u64>> for ValueRef<'_>

fn from(value: Option<u64>) -> Self

Converts to this type from the input type.

impl From<Option<u8>> for ValueRef<'_>

fn from(value: Option<u8>) -> Self

Converts to this type from the input type.

impl From<Time> for ValueRef<'_>

fn from(value: Time) -> Self

Converts to this type from the input type.

impl From<TimeMicrosecond> for ValueRef<'static>

fn from(t: TimeMicrosecond) -> Self

Converts to this type from the input type.

impl From<TimeMillisecond> for ValueRef<'static>

fn from(t: TimeMillisecond) -> Self

Converts to this type from the input type.

impl From<TimeNanosecond> for ValueRef<'static>

fn from(t: TimeNanosecond) -> Self

Converts to this type from the input type.

impl From<TimeSecond> for ValueRef<'static>

fn from(t: TimeSecond) -> Self

Converts to this type from the input type.

impl From<Timestamp> for ValueRef<'_>

fn from(value: Timestamp) -> Self

Converts to this type from the input type.

impl From<TimestampMicrosecond> for ValueRef<'static>

fn from(t: TimestampMicrosecond) -> Self

Converts to this type from the input type.

impl From<TimestampMillisecond> for ValueRef<'static>

fn from(t: TimestampMillisecond) -> Self

Converts to this type from the input type.

impl From<TimestampNanosecond> for ValueRef<'static>

fn from(t: TimestampNanosecond) -> Self

Converts to this type from the input type.

impl From<TimestampSecond> for ValueRef<'static>

fn from(t: TimestampSecond) -> Self

Converts to this type from the input type.

impl From<ValueRef<'_>> for Value

fn from(value: ValueRef<'_>) -> Self

Converts to this type from the input type.

impl From<bool> for ValueRef<'_>

fn from(value: bool) -> Self

Converts to this type from the input type.

impl From<f32> for ValueRef<'_>

fn from(value: f32) -> Self

Converts to this type from the input type.

impl From<f64> for ValueRef<'_>

fn from(value: f64) -> Self

Converts to this type from the input type.

impl From<i16> for ValueRef<'_>

fn from(value: i16) -> Self

Converts to this type from the input type.

impl From<i32> for ValueRef<'_>

fn from(value: i32) -> Self

Converts to this type from the input type.

impl From<i64> for ValueRef<'_>

fn from(value: i64) -> Self

Converts to this type from the input type.

impl From<i8> for ValueRef<'_>

fn from(value: i8) -> Self

Converts to this type from the input type.

impl From<u16> for ValueRef<'_>

fn from(value: u16) -> Self

Converts to this type from the input type.

impl From<u32> for ValueRef<'_>

fn from(value: u32) -> Self

Converts to this type from the input type.

impl From<u64> for ValueRef<'_>

fn from(value: u64) -> Self

Converts to this type from the input type.

impl From<u8> for ValueRef<'_>

fn from(value: u8) -> Self

Converts to this type from the input type.

impl Ord for ValueRef<'_>

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl<'a> PartialEq for ValueRef<'a>

fn eq(&self, other: &ValueRef<'a>) -> 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 PartialOrd for ValueRef<'_>

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<'a> Copy for ValueRef<'a>

impl<'a> Eq for ValueRef<'a>

impl<'a> StructuralPartialEq for ValueRef<'a>