nulls

package
v0.0.0-debug-20260702 Latest Latest
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 Go to latest Published: Jul 2, 2026 License: Apache-2.0 Imports: 4 Imported by: 0

Documentation

Overview

Package nulls wrap up functions for the manipulation of bitmap library roaring. MatrixOne uses nulls to store all NULL values in a column. You can think of Nulls as a bitmap.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func Add 

func Add(nsp *Nulls, sels ...uint64)

func AddRange added in v0.6.0 

func AddRange(nsp *Nulls, start, end uint64)

AddRange add bits [start, end) to nsp

func Any 

func Any(nsp *Nulls) bool

Any returns true if any bit in the Nulls is set, otherwise it will return false.

func Contains 

func Contains(nsp *Nulls, row uint64) bool

func Del 

func Del(nsp *Nulls, sels ...uint64)

func Filter 

func Filter(nsp *Nulls, sels []int64, negate bool)

XXX old API returns nsp, which is broken -- we update in place.

func FilterByMask 

func FilterByMask(nsp *Nulls, sels *bitmap.Bitmap, negate bool)

func FilterCount 

func FilterCount(nsp *Nulls, sels []int64) int

FilterCount returns the number count that appears in both nsp and sel

func Or 

func Or(nsp, m, r *Nulls)

Or performs union operation on Nulls nsp,m and store the result in r

func Ptr added in v0.6.0 

func Ptr(nsp *Nulls) *uint64

func Range 

func Range(nsp *Nulls, start, end, bias uint64, b *Nulls)

Range adds the numbers in nsp starting at start and ending at end to m. `bias` represents the starting offset used for the Range Output Always update in place.

func RemoveRange 

func RemoveRange(nsp *Nulls, start, end uint64)

func Set 

func Set(nsp, other *Nulls)

Set performs union operation on Nulls nsp,m and store the result in nsp

func Size 

func Size(nsp *Nulls) int

Size estimates the memory usage of the Nulls.

func String 

func String(nsp *Nulls) string

func ToArray added in v0.8.0 

func ToArray[T constraints.Integer](nsp *Nulls) []T

func TryExpand added in v0.5.1 

func TryExpand(nsp *Nulls, size int)

Types

type Bitmap added in v0.8.0 

type Bitmap = Nulls

type Nulls 

type Nulls struct {
	// contains filtered or unexported fields
}

func Build added in v0.6.0 

func Build(size int, rows ...uint64) *Nulls

func NewWithSize added in v0.5.1 

func NewWithSize(size int) *Nulls

func (*Nulls) Add added in v0.8.0 

func (nsp *Nulls) Add(sels ...uint64)

func (*Nulls) AddRange added in v0.8.0 

func (nsp *Nulls) AddRange(start, end uint64)

func (*Nulls) Any added in v0.5.1 

func (nsp *Nulls) Any() bool

XXX This emptyFlag thing is broken -- it simply cannot be used concurrently. Make any an alias of EmptyByFlag, otherwise there will be hell lots of race conditions.

func (*Nulls) Build added in v0.8.0 

func (nsp *Nulls) Build(size int, rows ...uint64)

func (*Nulls) Clear 

func (nsp *Nulls) Clear()

func (*Nulls) Clone added in v0.6.0 

func (nsp *Nulls) Clone() *Nulls

func (*Nulls) Contains added in v0.5.1 

func (nsp *Nulls) Contains(row uint64) bool

Contains returns true if the integer is contained in the Nulls

func (*Nulls) Count added in v0.8.0 

func (nsp *Nulls) Count() int

pop count

func (*Nulls) Del added in v0.8.0 

func (nsp *Nulls) Del(sels ...uint64)

func (*Nulls) DelI64 added in v0.8.0 

func (nsp *Nulls) DelI64(rows ...int64)

func (*Nulls) EmptyByFlag added in v0.8.0 

func (nsp *Nulls) EmptyByFlag() bool

func (*Nulls) Foreach added in v0.8.0 

func (nsp *Nulls) Foreach(fn func(uint64) bool)

func (*Nulls) GetBitmap added in v0.8.0 

func (nsp *Nulls) GetBitmap() *bitmap.Bitmap

func (*Nulls) GetCardinality added in v0.8.0 

func (nsp *Nulls) GetCardinality() int

func (*Nulls) InitWith added in v0.8.0 

func (nsp *Nulls) InitWith(n *Nulls)

func (*Nulls) InitWithSize added in v0.8.0 

func (nsp *Nulls) InitWithSize(size int)

func (*Nulls) IsEmpty added in v0.8.0 

func (nsp *Nulls) IsEmpty() bool

func (*Nulls) IsSame added in v0.8.0 

func (nsp *Nulls) IsSame(m *Nulls) bool

func (*Nulls) Merge added in v0.8.0 

func (nsp *Nulls) Merge(other *Nulls)

func (*Nulls) Or 

func (nsp *Nulls) Or(m *Nulls)

Or the m Nulls into nsp.

func (*Nulls) OrBitmap 

func (nsp *Nulls) OrBitmap(m *bitmap.Bitmap)

func (*Nulls) RawPtrLen 

func (nsp *Nulls) RawPtrLen() (uintptr, uintptr)

func (*Nulls) Read 

func (nsp *Nulls) Read(data []byte) error

func (*Nulls) ReadNoCopy added in v0.8.0 

func (nsp *Nulls) ReadNoCopy(data []byte) error

func (*Nulls) ReadNoCopyV1 

func (nsp *Nulls) ReadNoCopyV1(data []byte) error

func (*Nulls) Reset added in v0.8.0 

func (nsp *Nulls) Reset()

func (*Nulls) Set added in v0.5.1 

func (nsp *Nulls) Set(row uint64)

func (*Nulls) Show 

func (nsp *Nulls) Show() ([]byte, error)

func (*Nulls) ShowV1 

func (nsp *Nulls) ShowV1() ([]byte, error)

ShowV1 in version 1, bitmap is v1

func (*Nulls) String added in v0.8.0 

func (nsp *Nulls) String() string

func (*Nulls) ToArray added in v0.8.0 

func (nsp *Nulls) ToArray() []uint64

func (*Nulls) ToI64Array 

func (nsp *Nulls) ToI64Array() []int64

func (*Nulls) Unset added in v0.8.0 

func (nsp *Nulls) Unset(row uint64)

Call it unset to match set. Clear or reset are taken.

Source Files

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