kv

package
v0.7.2 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Mar 3, 2018 License: Apache-2.0 Imports: 18 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var (
	ErrNotFound     = errors.New("kv: not found")
	ErrNoBucket     = errors.New("kv: bucket is missing")
	ErrBucketExists = errors.New("kv: bucket already exists")
)
View Source 
var (
	DefaultQuadIndexes = []QuadIndex{
		{Dirs: []quad.Direction{quad.Subject}},
		{Dirs: []quad.Direction{quad.Object}},
	}
)

Functions

func Each 

func Each(ctx context.Context, b Bucket, pref []byte, fnc func(k, v []byte) error) error

func GetOne 

func GetOne(ctx context.Context, b Bucket, key []byte) ([]byte, error)

func Init 

func Init(kv BucketKV, opt graph.Options) error

func New 

func New(kv BucketKV, _ graph.Options) (graph.QuadStore, error)

func Register 

func Register(name string, r Registration)

func Update 

func Update(ctx context.Context, kv BucketKV, update func(tx BucketTx) error) error

func View 

func View(kv BucketKV, view func(tx BucketTx) error) error

Types

type AllIterator 

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

func NewAllIterator 

func NewAllIterator(nodes bool, qs *QuadStore, cons *constraint) *AllIterator

func (*AllIterator) Clone 

func (it *AllIterator) Clone() graph.Iterator

func (*AllIterator) Close 

func (it *AllIterator) Close() error

func (*AllIterator) Contains 

func (it *AllIterator) Contains(ctx context.Context, v graph.Value) bool

func (*AllIterator) Err 

func (it *AllIterator) Err() error

func (*AllIterator) Next 

func (it *AllIterator) Next(ctx context.Context) bool

func (*AllIterator) NextPath 

func (it *AllIterator) NextPath(ctx context.Context) bool

func (*AllIterator) Optimize 

func (it *AllIterator) Optimize() (graph.Iterator, bool)

func (*AllIterator) Reset 

func (it *AllIterator) Reset()

func (*AllIterator) Result 

func (it *AllIterator) Result() graph.Value

func (*AllIterator) Size 

func (it *AllIterator) Size() (int64, bool)

func (*AllIterator) Sorted 

func (it *AllIterator) Sorted() bool

func (*AllIterator) Stats 

func (it *AllIterator) Stats() graph.IteratorStats

func (*AllIterator) String 

func (it *AllIterator) String() string

func (*AllIterator) SubIterators 

func (it *AllIterator) SubIterators() []graph.Iterator

No subiterators.

func (*AllIterator) TagResults 

func (it *AllIterator) TagResults(dst map[string]graph.Value)

func (*AllIterator) Tagger 

func (it *AllIterator) Tagger() *graph.Tagger

func (*AllIterator) Type 

func (it *AllIterator) Type() graph.Type

func (*AllIterator) UID 

func (it *AllIterator) UID() uint64

type Base 

type Base interface {
	Type() string
	Close() error
}

type Bucket 

type Bucket interface {
	Get(ctx context.Context, keys [][]byte) ([][]byte, error)
	Put(k, v []byte) error
	Del(k []byte) error
	Scan(pref []byte) KVIterator
}

type BucketKV 

type BucketKV interface {
	Base
	Tx(update bool) (BucketTx, error)
}

func FromFlat 

func FromFlat(flat FlatKV) BucketKV

type BucketKey 

type BucketKey struct {
	Bucket, Key []byte
}

type BucketTx 

type BucketTx interface {
	Tx
	Bucket(name []byte) Bucket
	Get(ctx context.Context, keys []BucketKey) ([][]byte, error)
}

type FillBucket 

type FillBucket interface {
	SetFillPercent(v float64)
}

type FlatKV 

type FlatKV interface {
	Base
	Tx(update bool) (FlatTx, error)
}

type FlatTx 

type FlatTx interface {
	Tx
	Bucket
}

type InitFunc 

type InitFunc func(string, graph.Options) (BucketKV, error)

type Int64Set 

type Int64Set []uint64

func (Int64Set) Len 

func (a Int64Set) Len() int

func (Int64Set) Less 

func (a Int64Set) Less(i, j int) bool

func (Int64Set) Swap 

func (a Int64Set) Swap(i, j int)

type Int64Value 

type Int64Value uint64

func (Int64Value) Key 

func (v Int64Value) Key() interface{}

type KVIterator 

type KVIterator interface {
	Next(ctx context.Context) bool
	Err() error
	Close() error
	Key() []byte
	Val() []byte
}

type NewFunc 

type NewFunc func(string, graph.Options) (BucketKV, error)

type QuadIndex 

type QuadIndex struct {
	Dirs   []quad.Direction
	Unique bool
}

func (QuadIndex) Bucket 

func (ind QuadIndex) Bucket() []byte

func (QuadIndex) Key 

func (ind QuadIndex) Key(vals []uint64) []byte

func (QuadIndex) KeyFor 

func (ind QuadIndex) KeyFor(p *proto.Primitive) []byte

type QuadIterator 

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

func NewQuadIterator 

func NewQuadIterator(qs *QuadStore, ind QuadIndex, vals []uint64) *QuadIterator

func (*QuadIterator) Clone 

func (it *QuadIterator) Clone() graph.Iterator

func (*QuadIterator) Close 

func (it *QuadIterator) Close() error

func (*QuadIterator) Contains 

func (it *QuadIterator) Contains(ctx context.Context, v graph.Value) bool

func (*QuadIterator) Err 

func (it *QuadIterator) Err() error

func (*QuadIterator) Next 

func (it *QuadIterator) Next(ctx context.Context) bool

func (*QuadIterator) NextPath 

func (it *QuadIterator) NextPath(ctx context.Context) bool

func (*QuadIterator) Optimize 

func (it *QuadIterator) Optimize() (graph.Iterator, bool)

func (*QuadIterator) Reset 

func (it *QuadIterator) Reset()

func (*QuadIterator) Result 

func (it *QuadIterator) Result() graph.Value

func (*QuadIterator) Size 

func (it *QuadIterator) Size() (int64, bool)

func (*QuadIterator) Sorted 

func (it *QuadIterator) Sorted() bool

func (*QuadIterator) Stats 

func (it *QuadIterator) Stats() graph.IteratorStats

func (*QuadIterator) String 

func (it *QuadIterator) String() string

func (*QuadIterator) SubIterators 

func (it *QuadIterator) SubIterators() []graph.Iterator

func (*QuadIterator) TagResults 

func (it *QuadIterator) TagResults(dst map[string]graph.Value)

func (*QuadIterator) Tagger 

func (it *QuadIterator) Tagger() *graph.Tagger

func (*QuadIterator) Type 

func (it *QuadIterator) Type() graph.Type

func (*QuadIterator) UID 

func (it *QuadIterator) UID() uint64

type QuadStore 

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

func (*QuadStore) ApplyDeltas 

func (qs *QuadStore) ApplyDeltas(in []graph.Delta, ignoreOpts graph.IgnoreOpts) error

func (*QuadStore) Close 

func (qs *QuadStore) Close() error

func (*QuadStore) NameOf 

func (qs *QuadStore) NameOf(v graph.Value) quad.Value

func (*QuadStore) NodesAllIterator 

func (qs *QuadStore) NodesAllIterator() graph.Iterator

func (*QuadStore) OptimizeIterator 

func (qs *QuadStore) OptimizeIterator(it graph.Iterator) (graph.Iterator, bool)

func (*QuadStore) Quad 

func (qs *QuadStore) Quad(k graph.Value) quad.Quad

func (*QuadStore) QuadDirection 

func (qs *QuadStore) QuadDirection(val graph.Value, d quad.Direction) graph.Value

func (*QuadStore) QuadIterator 

func (qs *QuadStore) QuadIterator(dir quad.Direction, v graph.Value) graph.Iterator

func (*QuadStore) QuadsAllIterator 

func (qs *QuadStore) QuadsAllIterator() graph.Iterator

func (*QuadStore) Size 

func (qs *QuadStore) Size() int64

func (*QuadStore) ValueOf 

func (qs *QuadStore) ValueOf(s quad.Value) graph.Value

func (*QuadStore) ValuesOf 

func (qs *QuadStore) ValuesOf(ctx context.Context, vals []graph.Value) ([]quad.Value, error)

type Registration 

type Registration struct {
	NewFunc      NewFunc
	InitFunc     InitFunc
	IsPersistent bool
}

type Tx 

type Tx interface {
	Commit(ctx context.Context) error
	Rollback() error
}

Source Files

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Directories

Path Synopsis
Package b implements a B+tree.
 Package b implements a B+tree.

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