element

package
v1.4.0 Latest Latest
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 Go to latest Published: Sep 29, 2025 License: MIT Imports: 2 Imported by: 0

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Constants

This section is empty.

Variables

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Functions

This section is empty.

Types

type BaseColumn 

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

BaseColumn 基础列实现

func (*BaseColumn) GetByteSize 

func (c *BaseColumn) GetByteSize() int

func (*BaseColumn) GetRawData 

func (c *BaseColumn) GetRawData() interface{}

func (*BaseColumn) GetType 

func (c *BaseColumn) GetType() ColumnType

func (*BaseColumn) IsNull 

func (c *BaseColumn) IsNull() bool

type BoolColumn 

type BoolColumn struct {
	BaseColumn
}

BoolColumn 布尔列

func NewBoolColumn 

func NewBoolColumn(value bool) *BoolColumn

func NewNullBoolColumn 

func NewNullBoolColumn() *BoolColumn

func (*BoolColumn) GetAsBool 

func (c *BoolColumn) GetAsBool() (bool, error)

func (*BoolColumn) GetAsBytes 

func (c *BoolColumn) GetAsBytes() ([]byte, error)

func (*BoolColumn) GetAsDate 

func (c *BoolColumn) GetAsDate() (time.Time, error)

func (*BoolColumn) GetAsDouble 

func (c *BoolColumn) GetAsDouble() (float64, error)

func (*BoolColumn) GetAsLong 

func (c *BoolColumn) GetAsLong() (int64, error)

func (*BoolColumn) GetAsString 

func (c *BoolColumn) GetAsString() string

type BytesColumn 

type BytesColumn struct {
	BaseColumn
}

BytesColumn 字节列

func NewBytesColumn 

func NewBytesColumn(value []byte) *BytesColumn

func NewNullBytesColumn 

func NewNullBytesColumn() *BytesColumn

func (*BytesColumn) GetAsBool 

func (c *BytesColumn) GetAsBool() (bool, error)

func (*BytesColumn) GetAsBytes 

func (c *BytesColumn) GetAsBytes() ([]byte, error)

func (*BytesColumn) GetAsDate 

func (c *BytesColumn) GetAsDate() (time.Time, error)

func (*BytesColumn) GetAsDouble 

func (c *BytesColumn) GetAsDouble() (float64, error)

func (*BytesColumn) GetAsLong 

func (c *BytesColumn) GetAsLong() (int64, error)

func (*BytesColumn) GetAsString 

func (c *BytesColumn) GetAsString() string

type Column 

type Column interface {
	GetType() ColumnType
	GetRawData() interface{}
	GetAsString() string
	GetAsLong() (int64, error)
	GetAsDouble() (float64, error)
	GetAsDate() (time.Time, error)
	GetAsBool() (bool, error)
	GetAsBytes() ([]byte, error)
	IsNull() bool
	GetByteSize() int
}

Column 接口定义列的基本操作 - 纯接口定义，无实现

type ColumnFactory 

type ColumnFactory interface {
	CreateStringColumn(value string) Column
	CreateLongColumn(value int64) Column
	CreateDoubleColumn(value float64) Column
	CreateDateColumn(value time.Time) Column
	CreateBoolColumn(value bool) Column
	CreateBytesColumn(value []byte) Column
	CreateNullColumn(columnType ColumnType) Column
}

ColumnFactory 列工厂接口 - 创建各种类型列的抽象工厂

func NewColumnFactory 

func NewColumnFactory() ColumnFactory

type ColumnType 

type ColumnType int

ColumnType 定义列类型 

const (
	TypeNull ColumnType = iota
	TypeLong
	TypeDouble
	TypeString
	TypeDate
	TypeBool
	TypeBytes
)

type DateColumn 

type DateColumn struct {
	BaseColumn
}

DateColumn 日期列

func NewDateColumn 

func NewDateColumn(value time.Time) *DateColumn

func NewNullDateColumn 

func NewNullDateColumn() *DateColumn

func (*DateColumn) GetAsBool 

func (c *DateColumn) GetAsBool() (bool, error)

func (*DateColumn) GetAsBytes 

func (c *DateColumn) GetAsBytes() ([]byte, error)

func (*DateColumn) GetAsDate 

func (c *DateColumn) GetAsDate() (time.Time, error)

func (*DateColumn) GetAsDouble 

func (c *DateColumn) GetAsDouble() (float64, error)

func (*DateColumn) GetAsLong 

func (c *DateColumn) GetAsLong() (int64, error)

func (*DateColumn) GetAsString 

func (c *DateColumn) GetAsString() string

type DefaultColumnFactory 

type DefaultColumnFactory struct{}

DefaultColumnFactory 默认列工厂实现

func (*DefaultColumnFactory) CreateBoolColumn 

func (f *DefaultColumnFactory) CreateBoolColumn(value bool) Column

func (*DefaultColumnFactory) CreateBytesColumn 

func (f *DefaultColumnFactory) CreateBytesColumn(value []byte) Column

func (*DefaultColumnFactory) CreateDateColumn 

func (f *DefaultColumnFactory) CreateDateColumn(value time.Time) Column

func (*DefaultColumnFactory) CreateDoubleColumn 

func (f *DefaultColumnFactory) CreateDoubleColumn(value float64) Column

func (*DefaultColumnFactory) CreateLongColumn 

func (f *DefaultColumnFactory) CreateLongColumn(value int64) Column

func (*DefaultColumnFactory) CreateNullColumn 

func (f *DefaultColumnFactory) CreateNullColumn(columnType ColumnType) Column

func (*DefaultColumnFactory) CreateStringColumn 

func (f *DefaultColumnFactory) CreateStringColumn(value string) Column

type DefaultRecord 

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

DefaultRecord provides the standard implementation of the Record interface with dynamic column storage and efficient memory management.

func NewRecord 

func NewRecord() *DefaultRecord

func (*DefaultRecord) AddColumn 

func (r *DefaultRecord) AddColumn(column Column)

func (*DefaultRecord) GetByteSize 

func (r *DefaultRecord) GetByteSize() int

func (*DefaultRecord) GetColumn 

func (r *DefaultRecord) GetColumn(index int) Column

func (*DefaultRecord) GetColumnNumber 

func (r *DefaultRecord) GetColumnNumber() int

func (*DefaultRecord) SetColumn 

func (r *DefaultRecord) SetColumn(index int, column Column)

func (*DefaultRecord) String 

func (r *DefaultRecord) String() string

type DefaultRecordFactory 

type DefaultRecordFactory struct{}

DefaultRecordFactory provides the standard implementation for record creation.

func (*DefaultRecordFactory) CreateRecord 

func (f *DefaultRecordFactory) CreateRecord() Record

type DoubleColumn 

type DoubleColumn struct {
	BaseColumn
}

DoubleColumn 浮点数列

func NewDoubleColumn 

func NewDoubleColumn(value float64) *DoubleColumn

func NewNullDoubleColumn 

func NewNullDoubleColumn() *DoubleColumn

func (*DoubleColumn) GetAsBool 

func (c *DoubleColumn) GetAsBool() (bool, error)

func (*DoubleColumn) GetAsBytes 

func (c *DoubleColumn) GetAsBytes() ([]byte, error)

func (*DoubleColumn) GetAsDate 

func (c *DoubleColumn) GetAsDate() (time.Time, error)

func (*DoubleColumn) GetAsDouble 

func (c *DoubleColumn) GetAsDouble() (float64, error)

func (*DoubleColumn) GetAsLong 

func (c *DoubleColumn) GetAsLong() (int64, error)

func (*DoubleColumn) GetAsString 

func (c *DoubleColumn) GetAsString() string

type LongColumn 

type LongColumn struct {
	BaseColumn
}

LongColumn 长整型列

func NewLongColumn 

func NewLongColumn(value int64) *LongColumn

func NewNullLongColumn 

func NewNullLongColumn() *LongColumn

func (*LongColumn) GetAsBool 

func (c *LongColumn) GetAsBool() (bool, error)

func (*LongColumn) GetAsBytes 

func (c *LongColumn) GetAsBytes() ([]byte, error)

func (*LongColumn) GetAsDate 

func (c *LongColumn) GetAsDate() (time.Time, error)

func (*LongColumn) GetAsDouble 

func (c *LongColumn) GetAsDouble() (float64, error)

func (*LongColumn) GetAsLong 

func (c *LongColumn) GetAsLong() (int64, error)

func (*LongColumn) GetAsString 

func (c *LongColumn) GetAsString() string

type Record 

type Record interface {
	AddColumn(column Column)
	SetColumn(index int, column Column)
	GetColumn(index int) Column
	GetColumnNumber() int
	GetByteSize() int
	String() string
}

Record represents a single row of data with columnar structure. Provides operations for column manipulation and data access.

type RecordFactory 

type RecordFactory interface {
	CreateRecord() Record
}

RecordFactory provides abstraction for creating Record instances.

func NewRecordFactory 

func NewRecordFactory() RecordFactory

type StringColumn 

type StringColumn struct {
	BaseColumn
}

StringColumn 字符串列

func NewStringColumn 

func NewStringColumn(value string) *StringColumn

func (*StringColumn) GetAsBool 

func (c *StringColumn) GetAsBool() (bool, error)

func (*StringColumn) GetAsBytes 

func (c *StringColumn) GetAsBytes() ([]byte, error)

func (*StringColumn) GetAsDate 

func (c *StringColumn) GetAsDate() (time.Time, error)

func (*StringColumn) GetAsDouble 

func (c *StringColumn) GetAsDouble() (float64, error)

func (*StringColumn) GetAsLong 

func (c *StringColumn) GetAsLong() (int64, error)

func (*StringColumn) GetAsString 

func (c *StringColumn) GetAsString() string

Source Files

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