lql

package module

v0.0.0-...-4b80f19 Latest Latest Go to latest Published: Feb 14, 2016 License: Apache-2.0 Imports: 7 Imported by: 0

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Repository

github.com/champioj/lql

Links

Open Source Insights

README ¶

lql

Just toying around. Beware, you could encouter some stupid ideas :)

Next step: Putting Relation in its own package Aggregation operations

To think about: Blob and variable string Putting relations into page + persistance (realize I'll have to rewrite everythings) Index and B-tree

Documentation ¶

Index ¶

Constants
type Attr
- func (a Attr) Equals(a2 Attr) bool
type Body
type Header
type Machine
- func NewMachine() *Machine
- func (m *Machine) Execute(line string) (info string, err error)
type Relation
- func NewRelation(attrs []Attr) *Relation
type Tuple
- func (t Tuple) Copy() Tuple

Constants ¶

View Source

const (
	// Load relationDst, csv_pathfile
	Load opCode = iota + 1
	// Print relationSrc
	Print
	// Join relationDst, relationSrc1, relationSrc2
	Join
	// Rename relationDst, relationSrc, attrOld, attrNew
	Rename
	// Project relationDst, relationSrc, attr1, attr2, ..., attrN
	Project
	// Restrict relationDst, relationSrc
	Restrict

	// Pushv typ, value
	Pushv
	// Pusha attr
	Pusha

	// OpEq typ
	OpEq
	// OpGT typ
	OpGT

	// OpAnd
	OpAnd
	// OpOr
	OpOr

	// OpAdd typ
	OpAdd
	// OpMult typ
	OpMult
)

Variables ¶

This section is empty.

Functions ¶

This section is empty.

Types ¶

type Attr ¶

type Attr struct {
	Name string
	Typ  typer.Typ
}

func (Attr) Equals ¶

func (a Attr) Equals(a2 Attr) bool

type Body ¶

type Body []Tuple

type Header ¶

type Header []Attr

func (h Header) AttrByName(name string) (attr Attr, pos int, err error)

func (h Header) Copy() Header

func (h Header) Len() int

func (h Header) Pos(a Attr) (int, error)

type Machine ¶

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

func NewMachine ¶

func NewMachine() *Machine

func (*Machine) Execute ¶

func (m *Machine) Execute(line string) (info string, err error)

type Relation ¶

type Relation struct {
	H Header
	B Body
}

func NewRelation ¶

func NewRelation(attrs []Attr) *Relation

func (*Relation) Add ¶

func (r *Relation) Add(tuple Tuple)

func (*Relation) NewTuple ¶

func (r *Relation) NewTuple(values []string) (Tuple, error)

func (Relation) String ¶

func (r Relation) String() string

type Tuple ¶

type Tuple []byte

func (Tuple) Copy ¶

func (t Tuple) Copy() Tuple

Source Files ¶

View all Source files

Directories ¶

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lql