array

package
v0.0.0-...-d55177b Latest Latest
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 Go to latest Published: Oct 19, 2018 License: Apache-2.0, BSD-2-Clause, BSD-3-Clause, + 2 more Imports: 7 Imported by: 0

Documentation

Overview

Package array provides implementations of various Arrow array types.

Index

Constants

View Source 
const (
	// UnknownNullCount specifies the NullN should be calculated from the null bitmap buffer.
	UnknownNullCount = -1
)

Variables

This section is empty.

Functions

This section is empty.

Types

type Binary 

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

A type which represents an immutable sequence of variable-length binary strings.

func NewBinaryData 

func NewBinaryData(data *Data) *Binary

NewBinaryData constructs a new Binary array from data.

func (*Binary) Data 

func (a *Binary) Data() *Data

func (*Binary) DataType 

func (a *Binary) DataType() arrow.DataType

DataType returns the type metadata for this instance.

func (*Binary) IsNull 

func (a *Binary) IsNull(i int) bool

IsNull returns true if value at index is null. NOTE: IsNull will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.

func (*Binary) IsValid 

func (a *Binary) IsValid(i int) bool

IsValid returns true if value at index is not null. NOTE: IsValid will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.

func (*Binary) Len 

func (a *Binary) Len() int

Len returns the number of elements in the array.

func (*Binary) NullBitmapBytes 

func (a *Binary) NullBitmapBytes() []byte

NullBitmapBytes returns a byte slice of the validity bitmap.

func (*Binary) NullN 

func (a *Binary) NullN() int

NullN returns the number of null values in the array.

func (*Binary) Release 

func (a *Binary) Release()

Release decreases the reference count by 1. Release may be called simultaneously from multiple goroutines. When the reference count goes to zero, the memory is freed.

func (*Binary) Retain 

func (a *Binary) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

func (*Binary) Value 

func (a *Binary) Value(i int) []byte

Value returns the slice at index i. This value should not be mutated.

func (*Binary) ValueBytes 

func (a *Binary) ValueBytes() []byte

func (*Binary) ValueLen 

func (a *Binary) ValueLen(i int) int

func (*Binary) ValueOffset 

func (a *Binary) ValueOffset(i int) int

func (*Binary) ValueOffsets 

func (a *Binary) ValueOffsets() []int32

func (*Binary) ValueString 

func (a *Binary) ValueString(i int) string

ValueString returns the string at index i without performing additional allocations. The string is only valid for the lifetime of the Binary array.

type BinaryBuilder 

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

A BinaryBuilder is used to build a Binary array using the Append methods.

func NewBinaryBuilder 

func NewBinaryBuilder(mem memory.Allocator, typE arrow.BinaryDataType) *BinaryBuilder

func (*BinaryBuilder) Append 

func (b *BinaryBuilder) Append(v []byte)

func (*BinaryBuilder) AppendNull 

func (b *BinaryBuilder) AppendNull()

func (*BinaryBuilder) AppendString 

func (b *BinaryBuilder) AppendString(v string)

func (*BinaryBuilder) AppendStringValues 

func (b *BinaryBuilder) AppendStringValues(v []string, valid []bool)

AppendStringValues will append the values in the v slice. The valid slice determines which values in v are valid (not null). The valid slice must either be empty or be equal in length to v. If empty, all values in v are appended and considered valid.

func (*BinaryBuilder) AppendValues 

func (b *BinaryBuilder) AppendValues(v [][]byte, valid []bool)

AppendValues will append the values in the v slice. The valid slice determines which values in v are valid (not null). The valid slice must either be empty or be equal in length to v. If empty, all values in v are appended and considered valid.

func (*BinaryBuilder) Cap 

func (b *BinaryBuilder) Cap() int

Cap returns the total number of elements that can be stored without allocating additional memory.

func (*BinaryBuilder) Len 

func (b *BinaryBuilder) Len() int

Len returns the number of elements in the array builder.

func (*BinaryBuilder) NewBinaryArray 

func (b *BinaryBuilder) NewBinaryArray() (a *Binary)

NewBinaryArray creates a Binary array from the memory buffers used by the builder and resets the BinaryBuilder so it can be used to build a new array.

func (*BinaryBuilder) NullN 

func (b *BinaryBuilder) NullN() int

NullN returns the number of null values in the array builder.

func (*BinaryBuilder) Release 

func (b *BinaryBuilder) Release()

Release decreases the reference count by 1. When the reference count goes to zero, the memory is freed. Release may be called simultaneously from multiple goroutines.

func (*BinaryBuilder) Reserve 

func (b *BinaryBuilder) Reserve(n int)

Reserve ensures there is enough space for appending n elements by checking the capacity and calling Resize if necessary.

func (*BinaryBuilder) Resize 

func (b *BinaryBuilder) Resize(n int)

Resize adjusts the space allocated by b to n elements. If n is greater than b.Cap(), additional memory will be allocated. If n is smaller, the allocated memory may reduced.

func (*BinaryBuilder) Retain 

func (b *BinaryBuilder) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

func (*BinaryBuilder) UnsafeAppendBoolToBitmap 

func (b *BinaryBuilder) UnsafeAppendBoolToBitmap(isValid bool)

func (*BinaryBuilder) Value 

func (b *BinaryBuilder) Value(i int) []byte

type Boolean 

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

A type which represents an immutable sequence of boolean values.

func NewBoolean 

func NewBoolean(length int, data *memory.Buffer, nullBitmap *memory.Buffer, nullN int) *Boolean

NewBoolean creates a boolean array from the data memory.Buffer and contains length elements. The nullBitmap buffer can be nil of there are no null values. If nullN is not known, use UnknownNullCount to calculate the value of NullN at runtime from the nullBitmap buffer.

func NewBooleanData 

func NewBooleanData(data *Data) *Boolean

func (*Boolean) Data 

func (a *Boolean) Data() *Data

func (*Boolean) DataType 

func (a *Boolean) DataType() arrow.DataType

DataType returns the type metadata for this instance.

func (*Boolean) IsNull 

func (a *Boolean) IsNull(i int) bool

IsNull returns true if value at index is null. NOTE: IsNull will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.

func (*Boolean) IsValid 

func (a *Boolean) IsValid(i int) bool

IsValid returns true if value at index is not null. NOTE: IsValid will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.

func (*Boolean) Len 

func (a *Boolean) Len() int

Len returns the number of elements in the array.

func (*Boolean) NullBitmapBytes 

func (a *Boolean) NullBitmapBytes() []byte

NullBitmapBytes returns a byte slice of the validity bitmap.

func (*Boolean) NullN 

func (a *Boolean) NullN() int

NullN returns the number of null values in the array.

func (*Boolean) Release 

func (a *Boolean) Release()

Release decreases the reference count by 1. Release may be called simultaneously from multiple goroutines. When the reference count goes to zero, the memory is freed.

func (*Boolean) Retain 

func (a *Boolean) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

func (*Boolean) Value 

func (a *Boolean) Value(i int) bool

type BooleanBuilder 

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

func NewBooleanBuilder 

func NewBooleanBuilder(mem memory.Allocator) *BooleanBuilder

func (*BooleanBuilder) Append 

func (b *BooleanBuilder) Append(v bool)

func (*BooleanBuilder) AppendByte 

func (b *BooleanBuilder) AppendByte(v byte)

func (*BooleanBuilder) AppendNull 

func (b *BooleanBuilder) AppendNull()

func (*BooleanBuilder) AppendValues 

func (b *BooleanBuilder) AppendValues(v []bool, valid []bool)

func (*BooleanBuilder) Cap 

func (b *BooleanBuilder) Cap() int

Cap returns the total number of elements that can be stored without allocating additional memory.

func (*BooleanBuilder) Len 

func (b *BooleanBuilder) Len() int

Len returns the number of elements in the array builder.

func (*BooleanBuilder) NewBooleanArray 

func (b *BooleanBuilder) NewBooleanArray() (a *Boolean)

NewBooleanArray creates a Boolean array from the memory buffers used by the builder and resets the BooleanBuilder so it can be used to build a new array.

func (*BooleanBuilder) NullN 

func (b *BooleanBuilder) NullN() int

NullN returns the number of null values in the array builder.

func (*BooleanBuilder) Release 

func (b *BooleanBuilder) Release()

Release decreases the reference count by 1. When the reference count goes to zero, the memory is freed. Release may be called simultaneously from multiple goroutines.

func (*BooleanBuilder) Reserve 

func (b *BooleanBuilder) Reserve(n int)

Reserve ensures there is enough space for appending n elements by checking the capacity and calling Resize if necessary.

func (*BooleanBuilder) Resize 

func (b *BooleanBuilder) Resize(n int)

Resize adjusts the space allocated by b to n elements. If n is greater than b.Cap(), additional memory will be allocated. If n is smaller, the allocated memory may reduced.

func (*BooleanBuilder) Retain 

func (b *BooleanBuilder) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

func (*BooleanBuilder) UnsafeAppend 

func (b *BooleanBuilder) UnsafeAppend(v bool)

func (*BooleanBuilder) UnsafeAppendBoolToBitmap 

func (b *BooleanBuilder) UnsafeAppendBoolToBitmap(isValid bool)

type Data 

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

A type which represents the memory and metadata for an Arrow array.

func NewData 

func NewData(typE arrow.DataType, length int, buffers []*memory.Buffer, nullN int) *Data

func (*Data) DataType 

func (d *Data) DataType() arrow.DataType

func (*Data) Len 

func (d *Data) Len() int

func (*Data) NullN 

func (d *Data) NullN() int

func (*Data) Release 

func (d *Data) Release()

Release decreases the reference count by 1. When the reference count goes to zero, the memory is freed. Release may be called simultaneously from multiple goroutines.

func (*Data) Retain 

func (d *Data) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

type Float32 

type Float32 struct {
	// contains filtered or unexported fields
}

A type which represents an immutable sequence of float32 values.

func NewFloat32Data 

func NewFloat32Data(data *Data) *Float32

func (*Float32) Data 

func (a *Float32) Data() *Data

func (*Float32) DataType 

func (a *Float32) DataType() arrow.DataType

DataType returns the type metadata for this instance.

func (*Float32) Float32Values 

func (a *Float32) Float32Values() []float32

func (*Float32) IsNull 

func (a *Float32) IsNull(i int) bool

IsNull returns true if value at index is null. NOTE: IsNull will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.

func (*Float32) IsValid 

func (a *Float32) IsValid(i int) bool

IsValid returns true if value at index is not null. NOTE: IsValid will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.

func (*Float32) Len 

func (a *Float32) Len() int

Len returns the number of elements in the array.

func (*Float32) NullBitmapBytes 

func (a *Float32) NullBitmapBytes() []byte

NullBitmapBytes returns a byte slice of the validity bitmap.

func (*Float32) NullN 

func (a *Float32) NullN() int

NullN returns the number of null values in the array.

func (*Float32) Release 

func (a *Float32) Release()

Release decreases the reference count by 1. Release may be called simultaneously from multiple goroutines. When the reference count goes to zero, the memory is freed.

func (*Float32) Retain 

func (a *Float32) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

func (*Float32) Value 

func (a *Float32) Value(i int) float32

type Float32Builder 

type Float32Builder struct {
	// contains filtered or unexported fields
}

func NewFloat32Builder 

func NewFloat32Builder(mem memory.Allocator) *Float32Builder

func (*Float32Builder) Append 

func (b *Float32Builder) Append(v float32)

func (*Float32Builder) AppendNull 

func (b *Float32Builder) AppendNull()

func (*Float32Builder) AppendValues 

func (b *Float32Builder) AppendValues(v []float32, valid []bool)

AppendValues will append the values in the v slice. The valid slice determines which values in v are valid (not null). The valid slice must either be empty or be equal in length to v. If empty, all values in v are appended and considered valid.

func (*Float32Builder) Cap 

func (b *Float32Builder) Cap() int

Cap returns the total number of elements that can be stored without allocating additional memory.

func (*Float32Builder) Len 

func (b *Float32Builder) Len() int

Len returns the number of elements in the array builder.

func (*Float32Builder) NewFloat32Array 

func (b *Float32Builder) NewFloat32Array() (a *Float32)

NewFloat32Array creates a Float32 array from the memory buffers used by the builder and resets the Float32Builder so it can be used to build a new array.

func (*Float32Builder) NullN 

func (b *Float32Builder) NullN() int

NullN returns the number of null values in the array builder.

func (*Float32Builder) Release 

func (b *Float32Builder) Release()

Release decreases the reference count by 1. When the reference count goes to zero, the memory is freed.

func (*Float32Builder) Reserve 

func (b *Float32Builder) Reserve(n int)

Reserve ensures there is enough space for appending n elements by checking the capacity and calling Resize if necessary.

func (*Float32Builder) Resize 

func (b *Float32Builder) Resize(n int)

Resize adjusts the space allocated by b to n elements. If n is greater than b.Cap(), additional memory will be allocated. If n is smaller, the allocated memory may reduced.

func (*Float32Builder) Retain 

func (b *Float32Builder) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

func (*Float32Builder) UnsafeAppend 

func (b *Float32Builder) UnsafeAppend(v float32)

func (*Float32Builder) UnsafeAppendBoolToBitmap 

func (b *Float32Builder) UnsafeAppendBoolToBitmap(isValid bool)

type Float64 

type Float64 struct {
	// contains filtered or unexported fields
}

A type which represents an immutable sequence of float64 values.

func NewFloat64Data 

func NewFloat64Data(data *Data) *Float64

func (*Float64) Data 

func (a *Float64) Data() *Data

func (*Float64) DataType 

func (a *Float64) DataType() arrow.DataType

DataType returns the type metadata for this instance.

func (*Float64) Float64Values 

func (a *Float64) Float64Values() []float64

func (*Float64) IsNull 

func (a *Float64) IsNull(i int) bool

IsNull returns true if value at index is null. NOTE: IsNull will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.

func (*Float64) IsValid 

func (a *Float64) IsValid(i int) bool

IsValid returns true if value at index is not null. NOTE: IsValid will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.

func (*Float64) Len 

func (a *Float64) Len() int

Len returns the number of elements in the array.

func (*Float64) NullBitmapBytes 

func (a *Float64) NullBitmapBytes() []byte

NullBitmapBytes returns a byte slice of the validity bitmap.

func (*Float64) NullN 

func (a *Float64) NullN() int

NullN returns the number of null values in the array.

func (*Float64) Release 

func (a *Float64) Release()

Release decreases the reference count by 1. Release may be called simultaneously from multiple goroutines. When the reference count goes to zero, the memory is freed.

func (*Float64) Retain 

func (a *Float64) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

func (*Float64) Value 

func (a *Float64) Value(i int) float64

type Float64Builder 

type Float64Builder struct {
	// contains filtered or unexported fields
}

func NewFloat64Builder 

func NewFloat64Builder(mem memory.Allocator) *Float64Builder

func (*Float64Builder) Append 

func (b *Float64Builder) Append(v float64)

func (*Float64Builder) AppendNull 

func (b *Float64Builder) AppendNull()

func (*Float64Builder) AppendValues 

func (b *Float64Builder) AppendValues(v []float64, valid []bool)

AppendValues will append the values in the v slice. The valid slice determines which values in v are valid (not null). The valid slice must either be empty or be equal in length to v. If empty, all values in v are appended and considered valid.

func (*Float64Builder) Cap 

func (b *Float64Builder) Cap() int

Cap returns the total number of elements that can be stored without allocating additional memory.

func (*Float64Builder) Len 

func (b *Float64Builder) Len() int

Len returns the number of elements in the array builder.

func (*Float64Builder) NewFloat64Array 

func (b *Float64Builder) NewFloat64Array() (a *Float64)

NewFloat64Array creates a Float64 array from the memory buffers used by the builder and resets the Float64Builder so it can be used to build a new array.

func (*Float64Builder) NullN 

func (b *Float64Builder) NullN() int

NullN returns the number of null values in the array builder.

func (*Float64Builder) Release 

func (b *Float64Builder) Release()

Release decreases the reference count by 1. When the reference count goes to zero, the memory is freed.

func (*Float64Builder) Reserve 

func (b *Float64Builder) Reserve(n int)

Reserve ensures there is enough space for appending n elements by checking the capacity and calling Resize if necessary.

func (*Float64Builder) Resize 

func (b *Float64Builder) Resize(n int)

Resize adjusts the space allocated by b to n elements. If n is greater than b.Cap(), additional memory will be allocated. If n is smaller, the allocated memory may reduced.

func (*Float64Builder) Retain 

func (b *Float64Builder) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

func (*Float64Builder) UnsafeAppend 

func (b *Float64Builder) UnsafeAppend(v float64)

func (*Float64Builder) UnsafeAppendBoolToBitmap 

func (b *Float64Builder) UnsafeAppendBoolToBitmap(isValid bool)

type Int16 

type Int16 struct {
	// contains filtered or unexported fields
}

A type which represents an immutable sequence of int16 values.

func NewInt16Data 

func NewInt16Data(data *Data) *Int16

func (*Int16) Data 

func (a *Int16) Data() *Data

func (*Int16) DataType 

func (a *Int16) DataType() arrow.DataType

DataType returns the type metadata for this instance.

func (*Int16) Int16Values 

func (a *Int16) Int16Values() []int16

func (*Int16) IsNull 

func (a *Int16) IsNull(i int) bool

IsNull returns true if value at index is null. NOTE: IsNull will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.

func (*Int16) IsValid 

func (a *Int16) IsValid(i int) bool

IsValid returns true if value at index is not null. NOTE: IsValid will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.

func (*Int16) Len 

func (a *Int16) Len() int

Len returns the number of elements in the array.

func (*Int16) NullBitmapBytes 

func (a *Int16) NullBitmapBytes() []byte

NullBitmapBytes returns a byte slice of the validity bitmap.

func (*Int16) NullN 

func (a *Int16) NullN() int

NullN returns the number of null values in the array.

func (*Int16) Release 

func (a *Int16) Release()

Release decreases the reference count by 1. Release may be called simultaneously from multiple goroutines. When the reference count goes to zero, the memory is freed.

func (*Int16) Retain 

func (a *Int16) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

func (*Int16) Value 

func (a *Int16) Value(i int) int16

type Int16Builder 

type Int16Builder struct {
	// contains filtered or unexported fields
}

func NewInt16Builder 

func NewInt16Builder(mem memory.Allocator) *Int16Builder

func (*Int16Builder) Append 

func (b *Int16Builder) Append(v int16)

func (*Int16Builder) AppendNull 

func (b *Int16Builder) AppendNull()

func (*Int16Builder) AppendValues 

func (b *Int16Builder) AppendValues(v []int16, valid []bool)

AppendValues will append the values in the v slice. The valid slice determines which values in v are valid (not null). The valid slice must either be empty or be equal in length to v. If empty, all values in v are appended and considered valid.

func (*Int16Builder) Cap 

func (b *Int16Builder) Cap() int

Cap returns the total number of elements that can be stored without allocating additional memory.

func (*Int16Builder) Len 

func (b *Int16Builder) Len() int

Len returns the number of elements in the array builder.

func (*Int16Builder) NewInt16Array 

func (b *Int16Builder) NewInt16Array() (a *Int16)

NewInt16Array creates a Int16 array from the memory buffers used by the builder and resets the Int16Builder so it can be used to build a new array.

func (*Int16Builder) NullN 

func (b *Int16Builder) NullN() int

NullN returns the number of null values in the array builder.

func (*Int16Builder) Release 

func (b *Int16Builder) Release()

Release decreases the reference count by 1. When the reference count goes to zero, the memory is freed.

func (*Int16Builder) Reserve 

func (b *Int16Builder) Reserve(n int)

Reserve ensures there is enough space for appending n elements by checking the capacity and calling Resize if necessary.

func (*Int16Builder) Resize 

func (b *Int16Builder) Resize(n int)

Resize adjusts the space allocated by b to n elements. If n is greater than b.Cap(), additional memory will be allocated. If n is smaller, the allocated memory may reduced.

func (*Int16Builder) Retain 

func (b *Int16Builder) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

func (*Int16Builder) UnsafeAppend 

func (b *Int16Builder) UnsafeAppend(v int16)

func (*Int16Builder) UnsafeAppendBoolToBitmap 

func (b *Int16Builder) UnsafeAppendBoolToBitmap(isValid bool)

type Int32 

type Int32 struct {
	// contains filtered or unexported fields
}

A type which represents an immutable sequence of int32 values.

func NewInt32Data 

func NewInt32Data(data *Data) *Int32

func (*Int32) Data 

func (a *Int32) Data() *Data

func (*Int32) DataType 

func (a *Int32) DataType() arrow.DataType

DataType returns the type metadata for this instance.

func (*Int32) Int32Values 

func (a *Int32) Int32Values() []int32

func (*Int32) IsNull 

func (a *Int32) IsNull(i int) bool

IsNull returns true if value at index is null. NOTE: IsNull will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.

func (*Int32) IsValid 

func (a *Int32) IsValid(i int) bool

IsValid returns true if value at index is not null. NOTE: IsValid will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.

func (*Int32) Len 

func (a *Int32) Len() int

Len returns the number of elements in the array.

func (*Int32) NullBitmapBytes 

func (a *Int32) NullBitmapBytes() []byte

NullBitmapBytes returns a byte slice of the validity bitmap.

func (*Int32) NullN 

func (a *Int32) NullN() int

NullN returns the number of null values in the array.

func (*Int32) Release 

func (a *Int32) Release()

Release decreases the reference count by 1. Release may be called simultaneously from multiple goroutines. When the reference count goes to zero, the memory is freed.

func (*Int32) Retain 

func (a *Int32) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

func (*Int32) Value 

func (a *Int32) Value(i int) int32

type Int32Builder 

type Int32Builder struct {
	// contains filtered or unexported fields
}

func NewInt32Builder 

func NewInt32Builder(mem memory.Allocator) *Int32Builder

func (*Int32Builder) Append 

func (b *Int32Builder) Append(v int32)

func (*Int32Builder) AppendNull 

func (b *Int32Builder) AppendNull()

func (*Int32Builder) AppendValues 

func (b *Int32Builder) AppendValues(v []int32, valid []bool)

AppendValues will append the values in the v slice. The valid slice determines which values in v are valid (not null). The valid slice must either be empty or be equal in length to v. If empty, all values in v are appended and considered valid.

func (*Int32Builder) Cap 

func (b *Int32Builder) Cap() int

Cap returns the total number of elements that can be stored without allocating additional memory.

func (*Int32Builder) Len 

func (b *Int32Builder) Len() int

Len returns the number of elements in the array builder.

func (*Int32Builder) NewInt32Array 

func (b *Int32Builder) NewInt32Array() (a *Int32)

NewInt32Array creates a Int32 array from the memory buffers used by the builder and resets the Int32Builder so it can be used to build a new array.

func (*Int32Builder) NullN 

func (b *Int32Builder) NullN() int

NullN returns the number of null values in the array builder.

func (*Int32Builder) Release 

func (b *Int32Builder) Release()

Release decreases the reference count by 1. When the reference count goes to zero, the memory is freed.

func (*Int32Builder) Reserve 

func (b *Int32Builder) Reserve(n int)

Reserve ensures there is enough space for appending n elements by checking the capacity and calling Resize if necessary.

func (*Int32Builder) Resize 

func (b *Int32Builder) Resize(n int)

Resize adjusts the space allocated by b to n elements. If n is greater than b.Cap(), additional memory will be allocated. If n is smaller, the allocated memory may reduced.

func (*Int32Builder) Retain 

func (b *Int32Builder) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

func (*Int32Builder) UnsafeAppend 

func (b *Int32Builder) UnsafeAppend(v int32)

func (*Int32Builder) UnsafeAppendBoolToBitmap 

func (b *Int32Builder) UnsafeAppendBoolToBitmap(isValid bool)

type Int64 

type Int64 struct {
	// contains filtered or unexported fields
}

A type which represents an immutable sequence of int64 values.

func NewInt64Data 

func NewInt64Data(data *Data) *Int64

func (*Int64) Data 

func (a *Int64) Data() *Data

func (*Int64) DataType 

func (a *Int64) DataType() arrow.DataType

DataType returns the type metadata for this instance.

func (*Int64) Int64Values 

func (a *Int64) Int64Values() []int64

func (*Int64) IsNull 

func (a *Int64) IsNull(i int) bool

IsNull returns true if value at index is null. NOTE: IsNull will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.

func (*Int64) IsValid 

func (a *Int64) IsValid(i int) bool

IsValid returns true if value at index is not null. NOTE: IsValid will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.

func (*Int64) Len 

func (a *Int64) Len() int

Len returns the number of elements in the array.

func (*Int64) NullBitmapBytes 

func (a *Int64) NullBitmapBytes() []byte

NullBitmapBytes returns a byte slice of the validity bitmap.

func (*Int64) NullN 

func (a *Int64) NullN() int

NullN returns the number of null values in the array.

func (*Int64) Release 

func (a *Int64) Release()

Release decreases the reference count by 1. Release may be called simultaneously from multiple goroutines. When the reference count goes to zero, the memory is freed.

func (*Int64) Retain 

func (a *Int64) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

func (*Int64) Value 

func (a *Int64) Value(i int) int64

type Int64Builder 

type Int64Builder struct {
	// contains filtered or unexported fields
}

func NewInt64Builder 

func NewInt64Builder(mem memory.Allocator) *Int64Builder

func (*Int64Builder) Append 

func (b *Int64Builder) Append(v int64)

func (*Int64Builder) AppendNull 

func (b *Int64Builder) AppendNull()

func (*Int64Builder) AppendValues 

func (b *Int64Builder) AppendValues(v []int64, valid []bool)

AppendValues will append the values in the v slice. The valid slice determines which values in v are valid (not null). The valid slice must either be empty or be equal in length to v. If empty, all values in v are appended and considered valid.

func (*Int64Builder) Cap 

func (b *Int64Builder) Cap() int

Cap returns the total number of elements that can be stored without allocating additional memory.

func (*Int64Builder) Len 

func (b *Int64Builder) Len() int

Len returns the number of elements in the array builder.

func (*Int64Builder) NewInt64Array 

func (b *Int64Builder) NewInt64Array() (a *Int64)

NewInt64Array creates a Int64 array from the memory buffers used by the builder and resets the Int64Builder so it can be used to build a new array.

func (*Int64Builder) NullN 

func (b *Int64Builder) NullN() int

NullN returns the number of null values in the array builder.

func (*Int64Builder) Release 

func (b *Int64Builder) Release()

Release decreases the reference count by 1. When the reference count goes to zero, the memory is freed.

func (*Int64Builder) Reserve 

func (b *Int64Builder) Reserve(n int)

Reserve ensures there is enough space for appending n elements by checking the capacity and calling Resize if necessary.

func (*Int64Builder) Resize 

func (b *Int64Builder) Resize(n int)

Resize adjusts the space allocated by b to n elements. If n is greater than b.Cap(), additional memory will be allocated. If n is smaller, the allocated memory may reduced.

func (*Int64Builder) Retain 

func (b *Int64Builder) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

func (*Int64Builder) UnsafeAppend 

func (b *Int64Builder) UnsafeAppend(v int64)

func (*Int64Builder) UnsafeAppendBoolToBitmap 

func (b *Int64Builder) UnsafeAppendBoolToBitmap(isValid bool)

type Int8 

type Int8 struct {
	// contains filtered or unexported fields
}

A type which represents an immutable sequence of int8 values.

func NewInt8Data 

func NewInt8Data(data *Data) *Int8

func (*Int8) Data 

func (a *Int8) Data() *Data

func (*Int8) DataType 

func (a *Int8) DataType() arrow.DataType

DataType returns the type metadata for this instance.

func (*Int8) Int8Values 

func (a *Int8) Int8Values() []int8

func (*Int8) IsNull 

func (a *Int8) IsNull(i int) bool

IsNull returns true if value at index is null. NOTE: IsNull will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.

func (*Int8) IsValid 

func (a *Int8) IsValid(i int) bool

IsValid returns true if value at index is not null. NOTE: IsValid will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.

func (*Int8) Len 

func (a *Int8) Len() int

Len returns the number of elements in the array.

func (*Int8) NullBitmapBytes 

func (a *Int8) NullBitmapBytes() []byte

NullBitmapBytes returns a byte slice of the validity bitmap.

func (*Int8) NullN 

func (a *Int8) NullN() int

NullN returns the number of null values in the array.

func (*Int8) Release 

func (a *Int8) Release()

Release decreases the reference count by 1. Release may be called simultaneously from multiple goroutines. When the reference count goes to zero, the memory is freed.

func (*Int8) Retain 

func (a *Int8) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

func (*Int8) Value 

func (a *Int8) Value(i int) int8

type Int8Builder 

type Int8Builder struct {
	// contains filtered or unexported fields
}

func NewInt8Builder 

func NewInt8Builder(mem memory.Allocator) *Int8Builder

func (*Int8Builder) Append 

func (b *Int8Builder) Append(v int8)

func (*Int8Builder) AppendNull 

func (b *Int8Builder) AppendNull()

func (*Int8Builder) AppendValues 

func (b *Int8Builder) AppendValues(v []int8, valid []bool)

AppendValues will append the values in the v slice. The valid slice determines which values in v are valid (not null). The valid slice must either be empty or be equal in length to v. If empty, all values in v are appended and considered valid.

func (*Int8Builder) Cap 

func (b *Int8Builder) Cap() int

Cap returns the total number of elements that can be stored without allocating additional memory.

func (*Int8Builder) Len 

func (b *Int8Builder) Len() int

Len returns the number of elements in the array builder.

func (*Int8Builder) NewInt8Array 

func (b *Int8Builder) NewInt8Array() (a *Int8)

NewInt8Array creates a Int8 array from the memory buffers used by the builder and resets the Int8Builder so it can be used to build a new array.

func (*Int8Builder) NullN 

func (b *Int8Builder) NullN() int

NullN returns the number of null values in the array builder.

func (*Int8Builder) Release 

func (b *Int8Builder) Release()

Release decreases the reference count by 1. When the reference count goes to zero, the memory is freed.

func (*Int8Builder) Reserve 

func (b *Int8Builder) Reserve(n int)

Reserve ensures there is enough space for appending n elements by checking the capacity and calling Resize if necessary.

func (*Int8Builder) Resize 

func (b *Int8Builder) Resize(n int)

Resize adjusts the space allocated by b to n elements. If n is greater than b.Cap(), additional memory will be allocated. If n is smaller, the allocated memory may reduced.

func (*Int8Builder) Retain 

func (b *Int8Builder) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

func (*Int8Builder) UnsafeAppend 

func (b *Int8Builder) UnsafeAppend(v int8)

func (*Int8Builder) UnsafeAppendBoolToBitmap 

func (b *Int8Builder) UnsafeAppendBoolToBitmap(isValid bool)

type Interface 

type Interface interface {
	// DataType returns the type metadata for this instance.
	DataType() arrow.DataType

	// NullN returns the number of null values in the array.
	NullN() int

	// NullBitmapBytes returns a byte slice of the validity bitmap.
	NullBitmapBytes() []byte

	// IsNull returns true if value at index is null.
	// NOTE: IsNull will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.
	IsNull(i int) bool

	// IsValid returns true if value at index is not null.
	// NOTE: IsValid will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.
	IsValid(i int) bool

	Data() *Data

	// Len returns the number of elements in the array.
	Len() int

	// Retain increases the reference count by 1.
	// Retain may be called simultaneously from multiple goroutines.
	Retain()

	// Release decreases the reference count by 1.
	// Release may be called simultaneously from multiple goroutines.
	// When the reference count goes to zero, the memory is freed.
	Release()
}

A type which satisfies array.Interface represents an immutable sequence of values.

func MakeFromData 

func MakeFromData(data *Data) Interface

MakeFromData constructs a strongly-typed array instance from generic Data.

type Timestamp 

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

A type which represents an immutable sequence of arrow.Timestamp values.

func NewTimestampData 

func NewTimestampData(data *Data) *Timestamp

func (*Timestamp) Data 

func (a *Timestamp) Data() *Data

func (*Timestamp) DataType 

func (a *Timestamp) DataType() arrow.DataType

DataType returns the type metadata for this instance.

func (*Timestamp) IsNull 

func (a *Timestamp) IsNull(i int) bool

IsNull returns true if value at index is null. NOTE: IsNull will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.

func (*Timestamp) IsValid 

func (a *Timestamp) IsValid(i int) bool

IsValid returns true if value at index is not null. NOTE: IsValid will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.

func (*Timestamp) Len 

func (a *Timestamp) Len() int

Len returns the number of elements in the array.

func (*Timestamp) NullBitmapBytes 

func (a *Timestamp) NullBitmapBytes() []byte

NullBitmapBytes returns a byte slice of the validity bitmap.

func (*Timestamp) NullN 

func (a *Timestamp) NullN() int

NullN returns the number of null values in the array.

func (*Timestamp) Release 

func (a *Timestamp) Release()

Release decreases the reference count by 1. Release may be called simultaneously from multiple goroutines. When the reference count goes to zero, the memory is freed.

func (*Timestamp) Retain 

func (a *Timestamp) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

func (*Timestamp) TimestampValues 

func (a *Timestamp) TimestampValues() []arrow.Timestamp

func (*Timestamp) Value 

func (a *Timestamp) Value(i int) arrow.Timestamp

type TimestampBuilder 

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

func NewTimestampBuilder 

func NewTimestampBuilder(mem memory.Allocator, typE *arrow.TimestampType) *TimestampBuilder

func (*TimestampBuilder) Append 

func (b *TimestampBuilder) Append(v arrow.Timestamp)

func (*TimestampBuilder) AppendNull 

func (b *TimestampBuilder) AppendNull()

func (*TimestampBuilder) AppendValues 

func (b *TimestampBuilder) AppendValues(v []arrow.Timestamp, valid []bool)

AppendValues will append the values in the v slice. The valid slice determines which values in v are valid (not null). The valid slice must either be empty or be equal in length to v. If empty, all values in v are appended and considered valid.

func (*TimestampBuilder) Cap 

func (b *TimestampBuilder) Cap() int

Cap returns the total number of elements that can be stored without allocating additional memory.

func (*TimestampBuilder) Len 

func (b *TimestampBuilder) Len() int

Len returns the number of elements in the array builder.

func (*TimestampBuilder) NewTimestampArray 

func (b *TimestampBuilder) NewTimestampArray() (a *Timestamp)

NewTimestampArray creates a Timestamp array from the memory buffers used by the builder and resets the TimestampBuilder so it can be used to build a new array.

func (*TimestampBuilder) NullN 

func (b *TimestampBuilder) NullN() int

NullN returns the number of null values in the array builder.

func (*TimestampBuilder) Release 

func (b *TimestampBuilder) Release()

Release decreases the reference count by 1. When the reference count goes to zero, the memory is freed.

func (*TimestampBuilder) Reserve 

func (b *TimestampBuilder) Reserve(n int)

Reserve ensures there is enough space for appending n elements by checking the capacity and calling Resize if necessary.

func (*TimestampBuilder) Resize 

func (b *TimestampBuilder) Resize(n int)

Resize adjusts the space allocated by b to n elements. If n is greater than b.Cap(), additional memory will be allocated. If n is smaller, the allocated memory may reduced.

func (*TimestampBuilder) Retain 

func (b *TimestampBuilder) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

func (*TimestampBuilder) UnsafeAppend 

func (b *TimestampBuilder) UnsafeAppend(v arrow.Timestamp)

func (*TimestampBuilder) UnsafeAppendBoolToBitmap 

func (b *TimestampBuilder) UnsafeAppendBoolToBitmap(isValid bool)

type Uint16 

type Uint16 struct {
	// contains filtered or unexported fields
}

A type which represents an immutable sequence of uint16 values.

func NewUint16Data 

func NewUint16Data(data *Data) *Uint16

func (*Uint16) Data 

func (a *Uint16) Data() *Data

func (*Uint16) DataType 

func (a *Uint16) DataType() arrow.DataType

DataType returns the type metadata for this instance.

func (*Uint16) IsNull 

func (a *Uint16) IsNull(i int) bool

IsNull returns true if value at index is null. NOTE: IsNull will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.

func (*Uint16) IsValid 

func (a *Uint16) IsValid(i int) bool

IsValid returns true if value at index is not null. NOTE: IsValid will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.

func (*Uint16) Len 

func (a *Uint16) Len() int

Len returns the number of elements in the array.

func (*Uint16) NullBitmapBytes 

func (a *Uint16) NullBitmapBytes() []byte

NullBitmapBytes returns a byte slice of the validity bitmap.

func (*Uint16) NullN 

func (a *Uint16) NullN() int

NullN returns the number of null values in the array.

func (*Uint16) Release 

func (a *Uint16) Release()

Release decreases the reference count by 1. Release may be called simultaneously from multiple goroutines. When the reference count goes to zero, the memory is freed.

func (*Uint16) Retain 

func (a *Uint16) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

func (*Uint16) Uint16Values 

func (a *Uint16) Uint16Values() []uint16

func (*Uint16) Value 

func (a *Uint16) Value(i int) uint16

type Uint16Builder 

type Uint16Builder struct {
	// contains filtered or unexported fields
}

func NewUint16Builder 

func NewUint16Builder(mem memory.Allocator) *Uint16Builder

func (*Uint16Builder) Append 

func (b *Uint16Builder) Append(v uint16)

func (*Uint16Builder) AppendNull 

func (b *Uint16Builder) AppendNull()

func (*Uint16Builder) AppendValues 

func (b *Uint16Builder) AppendValues(v []uint16, valid []bool)

AppendValues will append the values in the v slice. The valid slice determines which values in v are valid (not null). The valid slice must either be empty or be equal in length to v. If empty, all values in v are appended and considered valid.

func (*Uint16Builder) Cap 

func (b *Uint16Builder) Cap() int

Cap returns the total number of elements that can be stored without allocating additional memory.

func (*Uint16Builder) Len 

func (b *Uint16Builder) Len() int

Len returns the number of elements in the array builder.

func (*Uint16Builder) NewUint16Array 

func (b *Uint16Builder) NewUint16Array() (a *Uint16)

NewUint16Array creates a Uint16 array from the memory buffers used by the builder and resets the Uint16Builder so it can be used to build a new array.

func (*Uint16Builder) NullN 

func (b *Uint16Builder) NullN() int

NullN returns the number of null values in the array builder.

func (*Uint16Builder) Release 

func (b *Uint16Builder) Release()

Release decreases the reference count by 1. When the reference count goes to zero, the memory is freed.

func (*Uint16Builder) Reserve 

func (b *Uint16Builder) Reserve(n int)

Reserve ensures there is enough space for appending n elements by checking the capacity and calling Resize if necessary.

func (*Uint16Builder) Resize 

func (b *Uint16Builder) Resize(n int)

Resize adjusts the space allocated by b to n elements. If n is greater than b.Cap(), additional memory will be allocated. If n is smaller, the allocated memory may reduced.

func (*Uint16Builder) Retain 

func (b *Uint16Builder) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

func (*Uint16Builder) UnsafeAppend 

func (b *Uint16Builder) UnsafeAppend(v uint16)

func (*Uint16Builder) UnsafeAppendBoolToBitmap 

func (b *Uint16Builder) UnsafeAppendBoolToBitmap(isValid bool)

type Uint32 

type Uint32 struct {
	// contains filtered or unexported fields
}

A type which represents an immutable sequence of uint32 values.

func NewUint32Data 

func NewUint32Data(data *Data) *Uint32

func (*Uint32) Data 

func (a *Uint32) Data() *Data

func (*Uint32) DataType 

func (a *Uint32) DataType() arrow.DataType

DataType returns the type metadata for this instance.

func (*Uint32) IsNull 

func (a *Uint32) IsNull(i int) bool

IsNull returns true if value at index is null. NOTE: IsNull will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.

func (*Uint32) IsValid 

func (a *Uint32) IsValid(i int) bool

IsValid returns true if value at index is not null. NOTE: IsValid will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.

func (*Uint32) Len 

func (a *Uint32) Len() int

Len returns the number of elements in the array.

func (*Uint32) NullBitmapBytes 

func (a *Uint32) NullBitmapBytes() []byte

NullBitmapBytes returns a byte slice of the validity bitmap.

func (*Uint32) NullN 

func (a *Uint32) NullN() int

NullN returns the number of null values in the array.

func (*Uint32) Release 

func (a *Uint32) Release()

Release decreases the reference count by 1. Release may be called simultaneously from multiple goroutines. When the reference count goes to zero, the memory is freed.

func (*Uint32) Retain 

func (a *Uint32) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

func (*Uint32) Uint32Values 

func (a *Uint32) Uint32Values() []uint32

func (*Uint32) Value 

func (a *Uint32) Value(i int) uint32

type Uint32Builder 

type Uint32Builder struct {
	// contains filtered or unexported fields
}

func NewUint32Builder 

func NewUint32Builder(mem memory.Allocator) *Uint32Builder

func (*Uint32Builder) Append 

func (b *Uint32Builder) Append(v uint32)

func (*Uint32Builder) AppendNull 

func (b *Uint32Builder) AppendNull()

func (*Uint32Builder) AppendValues 

func (b *Uint32Builder) AppendValues(v []uint32, valid []bool)

AppendValues will append the values in the v slice. The valid slice determines which values in v are valid (not null). The valid slice must either be empty or be equal in length to v. If empty, all values in v are appended and considered valid.

func (*Uint32Builder) Cap 

func (b *Uint32Builder) Cap() int

Cap returns the total number of elements that can be stored without allocating additional memory.

func (*Uint32Builder) Len 

func (b *Uint32Builder) Len() int

Len returns the number of elements in the array builder.

func (*Uint32Builder) NewUint32Array 

func (b *Uint32Builder) NewUint32Array() (a *Uint32)

NewUint32Array creates a Uint32 array from the memory buffers used by the builder and resets the Uint32Builder so it can be used to build a new array.

func (*Uint32Builder) NullN 

func (b *Uint32Builder) NullN() int

NullN returns the number of null values in the array builder.

func (*Uint32Builder) Release 

func (b *Uint32Builder) Release()

Release decreases the reference count by 1. When the reference count goes to zero, the memory is freed.

func (*Uint32Builder) Reserve 

func (b *Uint32Builder) Reserve(n int)

Reserve ensures there is enough space for appending n elements by checking the capacity and calling Resize if necessary.

func (*Uint32Builder) Resize 

func (b *Uint32Builder) Resize(n int)

Resize adjusts the space allocated by b to n elements. If n is greater than b.Cap(), additional memory will be allocated. If n is smaller, the allocated memory may reduced.

func (*Uint32Builder) Retain 

func (b *Uint32Builder) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

func (*Uint32Builder) UnsafeAppend 

func (b *Uint32Builder) UnsafeAppend(v uint32)

func (*Uint32Builder) UnsafeAppendBoolToBitmap 

func (b *Uint32Builder) UnsafeAppendBoolToBitmap(isValid bool)

type Uint64 

type Uint64 struct {
	// contains filtered or unexported fields
}

A type which represents an immutable sequence of uint64 values.

func NewUint64Data 

func NewUint64Data(data *Data) *Uint64

func (*Uint64) Data 

func (a *Uint64) Data() *Data

func (*Uint64) DataType 

func (a *Uint64) DataType() arrow.DataType

DataType returns the type metadata for this instance.

func (*Uint64) IsNull 

func (a *Uint64) IsNull(i int) bool

IsNull returns true if value at index is null. NOTE: IsNull will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.

func (*Uint64) IsValid 

func (a *Uint64) IsValid(i int) bool

IsValid returns true if value at index is not null. NOTE: IsValid will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.

func (*Uint64) Len 

func (a *Uint64) Len() int

Len returns the number of elements in the array.

func (*Uint64) NullBitmapBytes 

func (a *Uint64) NullBitmapBytes() []byte

NullBitmapBytes returns a byte slice of the validity bitmap.

func (*Uint64) NullN 

func (a *Uint64) NullN() int

NullN returns the number of null values in the array.

func (*Uint64) Release 

func (a *Uint64) Release()

Release decreases the reference count by 1. Release may be called simultaneously from multiple goroutines. When the reference count goes to zero, the memory is freed.

func (*Uint64) Retain 

func (a *Uint64) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

func (*Uint64) Uint64Values 

func (a *Uint64) Uint64Values() []uint64

func (*Uint64) Value 

func (a *Uint64) Value(i int) uint64

type Uint64Builder 

type Uint64Builder struct {
	// contains filtered or unexported fields
}

func NewUint64Builder 

func NewUint64Builder(mem memory.Allocator) *Uint64Builder

func (*Uint64Builder) Append 

func (b *Uint64Builder) Append(v uint64)

func (*Uint64Builder) AppendNull 

func (b *Uint64Builder) AppendNull()

func (*Uint64Builder) AppendValues 

func (b *Uint64Builder) AppendValues(v []uint64, valid []bool)

AppendValues will append the values in the v slice. The valid slice determines which values in v are valid (not null). The valid slice must either be empty or be equal in length to v. If empty, all values in v are appended and considered valid.

func (*Uint64Builder) Cap 

func (b *Uint64Builder) Cap() int

Cap returns the total number of elements that can be stored without allocating additional memory.

func (*Uint64Builder) Len 

func (b *Uint64Builder) Len() int

Len returns the number of elements in the array builder.

func (*Uint64Builder) NewUint64Array 

func (b *Uint64Builder) NewUint64Array() (a *Uint64)

NewUint64Array creates a Uint64 array from the memory buffers used by the builder and resets the Uint64Builder so it can be used to build a new array.

func (*Uint64Builder) NullN 

func (b *Uint64Builder) NullN() int

NullN returns the number of null values in the array builder.

func (*Uint64Builder) Release 

func (b *Uint64Builder) Release()

Release decreases the reference count by 1. When the reference count goes to zero, the memory is freed.

func (*Uint64Builder) Reserve 

func (b *Uint64Builder) Reserve(n int)

Reserve ensures there is enough space for appending n elements by checking the capacity and calling Resize if necessary.

func (*Uint64Builder) Resize 

func (b *Uint64Builder) Resize(n int)

Resize adjusts the space allocated by b to n elements. If n is greater than b.Cap(), additional memory will be allocated. If n is smaller, the allocated memory may reduced.

func (*Uint64Builder) Retain 

func (b *Uint64Builder) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

func (*Uint64Builder) UnsafeAppend 

func (b *Uint64Builder) UnsafeAppend(v uint64)

func (*Uint64Builder) UnsafeAppendBoolToBitmap 

func (b *Uint64Builder) UnsafeAppendBoolToBitmap(isValid bool)

type Uint8 

type Uint8 struct {
	// contains filtered or unexported fields
}

A type which represents an immutable sequence of uint8 values.

func NewUint8Data 

func NewUint8Data(data *Data) *Uint8

func (*Uint8) Data 

func (a *Uint8) Data() *Data

func (*Uint8) DataType 

func (a *Uint8) DataType() arrow.DataType

DataType returns the type metadata for this instance.

func (*Uint8) IsNull 

func (a *Uint8) IsNull(i int) bool

IsNull returns true if value at index is null. NOTE: IsNull will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.

func (*Uint8) IsValid 

func (a *Uint8) IsValid(i int) bool

IsValid returns true if value at index is not null. NOTE: IsValid will panic if NullBitmapBytes is not empty and 0 > i ≥ Len.

func (*Uint8) Len 

func (a *Uint8) Len() int

Len returns the number of elements in the array.

func (*Uint8) NullBitmapBytes 

func (a *Uint8) NullBitmapBytes() []byte

NullBitmapBytes returns a byte slice of the validity bitmap.

func (*Uint8) NullN 

func (a *Uint8) NullN() int

NullN returns the number of null values in the array.

func (*Uint8) Release 

func (a *Uint8) Release()

Release decreases the reference count by 1. Release may be called simultaneously from multiple goroutines. When the reference count goes to zero, the memory is freed.

func (*Uint8) Retain 

func (a *Uint8) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

func (*Uint8) Uint8Values 

func (a *Uint8) Uint8Values() []uint8

func (*Uint8) Value 

func (a *Uint8) Value(i int) uint8

type Uint8Builder 

type Uint8Builder struct {
	// contains filtered or unexported fields
}

func NewUint8Builder 

func NewUint8Builder(mem memory.Allocator) *Uint8Builder

func (*Uint8Builder) Append 

func (b *Uint8Builder) Append(v uint8)

func (*Uint8Builder) AppendNull 

func (b *Uint8Builder) AppendNull()

func (*Uint8Builder) AppendValues 

func (b *Uint8Builder) AppendValues(v []uint8, valid []bool)

AppendValues will append the values in the v slice. The valid slice determines which values in v are valid (not null). The valid slice must either be empty or be equal in length to v. If empty, all values in v are appended and considered valid.

func (*Uint8Builder) Cap 

func (b *Uint8Builder) Cap() int

Cap returns the total number of elements that can be stored without allocating additional memory.

func (*Uint8Builder) Len 

func (b *Uint8Builder) Len() int

Len returns the number of elements in the array builder.

func (*Uint8Builder) NewUint8Array 

func (b *Uint8Builder) NewUint8Array() (a *Uint8)

NewUint8Array creates a Uint8 array from the memory buffers used by the builder and resets the Uint8Builder so it can be used to build a new array.

func (*Uint8Builder) NullN 

func (b *Uint8Builder) NullN() int

NullN returns the number of null values in the array builder.

func (*Uint8Builder) Release 

func (b *Uint8Builder) Release()

Release decreases the reference count by 1. When the reference count goes to zero, the memory is freed.

func (*Uint8Builder) Reserve 

func (b *Uint8Builder) Reserve(n int)

Reserve ensures there is enough space for appending n elements by checking the capacity and calling Resize if necessary.

func (*Uint8Builder) Resize 

func (b *Uint8Builder) Resize(n int)

Resize adjusts the space allocated by b to n elements. If n is greater than b.Cap(), additional memory will be allocated. If n is smaller, the allocated memory may reduced.

func (*Uint8Builder) Retain 

func (b *Uint8Builder) Retain()

Retain increases the reference count by 1. Retain may be called simultaneously from multiple goroutines.

func (*Uint8Builder) UnsafeAppend 

func (b *Uint8Builder) UnsafeAppend(v uint8)

func (*Uint8Builder) UnsafeAppendBoolToBitmap 

func (b *Uint8Builder) UnsafeAppendBoolToBitmap(isValid bool)

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