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RangeFrameOffset

risingwave_expr::window_function

Struct RangeFrameOffset

pub struct RangeFrameOffset {
    offset: ScalarImpl,
    add_expr: Option<Arc<dyn SyncExpression>>,
    sub_expr: Option<Arc<dyn SyncExpression>>,
}

Expand description

The wrapper type for ScalarImpl range frame offset, containing two expressions to help adding and subtracting the offset.

Fields§

§offset: ScalarImpl

The original offset value.

§add_expr: Option<Arc<dyn SyncExpression>>

Built expression for $0 + offset.

§sub_expr: Option<Arc<dyn SyncExpression>>

Built expression for $0 - offset.

Implementations§

impl RangeFrameOffset

pub fn new(offset: ScalarImpl) -> Self

fn prepare( &mut self, order_data_type: &DataType, offset_data_type: &DataType, ) -> Result<()>

pub fn new_for_test( offset: ScalarImpl, order_data_type: &DataType, offset_data_type: &DataType, ) -> Self

Methods from Deref<Target = ScalarImpl>§

pub fn get_ident(&self) -> &'static str

pub fn successor(&self) -> Option<ScalarImpl>

Returns the successor of the current value if it exists.

See also Successor.

The function may return None when:

The current value is the maximum value of the type.
The successor value of the type is not well-defined.

pub fn as_int16(&self) -> &i16

§Panics

If the scalar is not of the expected type.

pub fn as_int32(&self) -> &i32

§Panics

If the scalar is not of the expected type.

pub fn as_int64(&self) -> &i64

§Panics

If the scalar is not of the expected type.

pub fn as_int256(&self) -> &Int256

§Panics

If the scalar is not of the expected type.

pub fn as_float32(&self) -> &OrderedFloat<f32>

§Panics

If the scalar is not of the expected type.

pub fn as_float64(&self) -> &OrderedFloat<f64>

§Panics

If the scalar is not of the expected type.

pub fn as_utf8(&self) -> &Box<str>

§Panics

If the scalar is not of the expected type.

pub fn as_bool(&self) -> &bool

§Panics

If the scalar is not of the expected type.

pub fn as_decimal(&self) -> &Decimal

§Panics

If the scalar is not of the expected type.

pub fn as_interval(&self) -> &Interval

§Panics

If the scalar is not of the expected type.

pub fn as_date(&self) -> &Date

§Panics

If the scalar is not of the expected type.

pub fn as_time(&self) -> &Time

§Panics

If the scalar is not of the expected type.

pub fn as_timestamp(&self) -> &Timestamp

§Panics

If the scalar is not of the expected type.

pub fn as_timestamptz(&self) -> &Timestamptz

§Panics

If the scalar is not of the expected type.

pub fn as_jsonb(&self) -> &JsonbVal

§Panics

If the scalar is not of the expected type.

pub fn as_variant(&self) -> &VariantVal

§Panics

If the scalar is not of the expected type.

pub fn as_serial(&self) -> &Serial

§Panics

If the scalar is not of the expected type.

pub fn as_struct(&self) -> &StructValue

§Panics

If the scalar is not of the expected type.

pub fn as_list(&self) -> &ListValue

§Panics

If the scalar is not of the expected type.

pub fn as_map(&self) -> &MapValue

§Panics

If the scalar is not of the expected type.

pub fn as_vector(&self) -> &VectorInner<Box<[OrderedFloat<f32>]>>

§Panics

If the scalar is not of the expected type.

pub fn as_bytea(&self) -> &Box<[u8]>

§Panics

If the scalar is not of the expected type.

pub fn as_scalar_ref_impl(&self) -> ScalarRefImpl<'_>

Converts ScalarImpl to ScalarRefImpl

pub fn serialize(&self, ser: &mut Serializer<impl BufMut>) -> Result<(), Error>

Serialize the scalar into the memcomparable format.

pub fn as_integral(&self) -> i64

Trait Implementations§

impl Clone for RangeFrameOffset

fn clone(&self) -> RangeFrameOffset

Returns a duplicate of the value. Read more

1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more

impl Debug for RangeFrameOffset

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

Formats the value using the given formatter. Read more

impl Deref for RangeFrameOffset

type Target = ScalarImpl

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl Eq for RangeFrameOffset
where ScalarImpl: PartialEq,

impl Hash for RangeFrameOffset
where ScalarImpl: Hash,

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher. Read more

1.3.0 · Source§

fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more

impl PartialEq for RangeFrameOffset
where ScalarImpl: PartialEq,

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

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

1.0.0 (const: unstable) · Source§

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

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

Auto Trait Implementations§

impl !RefUnwindSafe for RangeFrameOffset

impl !UnwindSafe for RangeFrameOffset

impl Freeze for RangeFrameOffset

impl Send for RangeFrameOffset

impl Sync for RangeFrameOffset

impl Unpin for RangeFrameOffset

impl UnsafeUnpin for RangeFrameOffset

Blanket Implementations§

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Gets the TypeId of self. Read more

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🔬This is a nightly-only experimental API. (clone_to_uninit)

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