interface-datastore 1.0.4

interface-datastore

1.0.4

Intro
Key ▸
- Static members
- .withNamespaces
- .random
- Instance members
- #toString
- #toBuffer
- #toStringTag
- #clean
- #less
- #reverse
- #namespaces
- #baseNamespace
- #list
- #type
- #name
- #instance
- #path
- #parent
- #child
- #isAncestorOf
- #isDecendantOf
- #isTopLevel
- #concat
namespaceType
namespaceValue
flatten
put
putMany
get
getMany
has
delete
deleteMany
batch
_all
query

Intro

Installable via npm install --save interface-datastore, it can also be used directly in the browser.

Download

The source is available for download from GitHub. Alternatively, you can install using npm:

$ npm install --save interface-datastore

You can then require() interface-datastore as normal:

const interfaceDatastore = require('interface-datastore')

In the Browser

interface-datastore should work in any ECMAScript 2018 environment out of the box.

Usage:

<script type="text/javascript" src="index.js"></script>

The portable versions of interface-datastore, including index.js and index.min.js, are included in the /dist folder. interface-datastore can also be found on unpkg.com under

Key

src/key.js

A Key represents the unique identifier of an object. Our Key scheme is inspired by file systems and Google App Engine key model. Keys are meant to be unique across a system. Keys are hierarchical, incorporating more and more specific namespaces. Thus keys can be deemed 'children' or 'ancestors' of other keys:

new Key('/Comedy')
new Key('/Comedy/MontyPython') Also, every namespace can be parametrized to embed relevant object information. For example, the Key name (most specific namespace) could include the object type:
new Key('/Comedy/MontyPython/Actor:JohnCleese')
new Key('/Comedy/MontyPython/Sketch:CheeseShop')
new Key('/Comedy/MontyPython/Sketch:CheeseShop/Character:Mousebender')

new Key(s: any, clean: any)

Parameters

s (any)

clean (any)

Static Members

▸ withNamespaces(list)

src/key.js

Constructs a key out of a namespace array.

withNamespaces(list: Array<string>): Key

Parameters

list (Array<string>)

Returns

Key:

Example

Key.withNamespaces(['one', 'two'])
// => Key('/one/two')

▸ random()

src/key.js

Returns a randomly (uuid) generated key.

random(): Key

Returns

Key:

Example

Key.random()
// => Key('/f98719ea086343f7b71f32ea9d9d521d')

Instance Members

▸ toString(encoding)

src/key.js

Convert to the string representation

toString(encoding: string): string

Parameters

encoding

(string
            = 'utf8')

Returns

string:

▸ toBuffer()

src/key.js

Return the buffer representation of the key

toBuffer(): Buffer

Returns

Buffer:

▸ toStringTag

src/key.js

toStringTag

Returns

String:

▸ clean()

src/key.js

Cleanup the current key

clean(): void

Returns

void:

▸ less(key)

src/key.js

Check if the given key is sorted lower than ourself.

less(key: Key): bool

Parameters

key (Key)

Returns

bool:

▸ reverse()

src/key.js

Returns the key with all parts in reversed order.

reverse(): Key

Returns

Key:

Example

new Key('/Comedy/MontyPython/Actor:JohnCleese').reverse()
// => Key('/Actor:JohnCleese/MontyPython/Comedy')

▸ namespaces()

src/key.js

Returns the namespaces making up this Key.

namespaces(): Array<string>

Returns

Array<string>:

▸ baseNamespace()

src/key.js

Returns the "base" namespace of this key.

baseNamespace(): string

Returns

string:

Example

new Key('/Comedy/MontyPython/Actor:JohnCleese').baseNamespace()
// => 'Actor:JohnCleese'

▸ list()

src/key.js

Returns the list representation of this key.

list(): Array<string>

Returns

Array<string>:

Example

new Key('/Comedy/MontyPython/Actor:JohnCleese').list()
// => ['Comedy', 'MontyPythong', 'Actor:JohnCleese']

▸ type()

src/key.js

Returns the "type" of this key (value of last namespace).

type(): string

Returns

string:

Example

new Key('/Comedy/MontyPython/Actor:JohnCleese').type()
// => 'Actor'

▸ name()

src/key.js

Returns the "name" of this key (field of last namespace).

name(): string

Returns

string:

Example

new Key('/Comedy/MontyPython/Actor:JohnCleese').name()
// => 'JohnCleese'

▸ instance(s)

src/key.js

Returns an "instance" of this type key (appends value to namespace).

instance(s: string): Key

Parameters

s (string)

Returns

Key:

Example

new Key('/Comedy/MontyPython/Actor').instance('JohnClesse')
// => Key('/Comedy/MontyPython/Actor:JohnCleese')

▸ path()

src/key.js

Returns the "path" of this key (parent + type).

path(): Key

Returns

Key:

Example

new Key('/Comedy/MontyPython/Actor:JohnCleese').path()
// => Key('/Comedy/MontyPython/Actor')

▸ parent()

src/key.js

Returns the parent Key of this Key.

parent(): Key

Returns

Key:

Example

new Key("/Comedy/MontyPython/Actor:JohnCleese").parent()
// => Key("/Comedy/MontyPython")

▸ child(key)

src/key.js

Returns the child Key of this Key.

child(key: Key): Key

Parameters

key (Key)

Returns

Key:

Example

new Key('/Comedy/MontyPython').child(new Key('Actor:JohnCleese'))
// => Key('/Comedy/MontyPython/Actor:JohnCleese')

▸ isAncestorOf(other)

src/key.js

Returns whether this key is a prefix of other

isAncestorOf(other: Key): bool

Parameters

other (Key)

Returns

bool:

Example

new Key('/Comedy').isAncestorOf('/Comedy/MontyPython')
// => true

▸ isDecendantOf(other)

src/key.js

Returns whether this key is a contains another as prefix.

isDecendantOf(other: Key): bool

Parameters

other (Key)

Returns

bool:

Example

new Key('/Comedy/MontyPython').isDecendantOf('/Comedy')
// => true

▸ isTopLevel()

src/key.js

Returns wether this key has only one namespace.

isTopLevel(): bool

Returns

bool:

▸ concat(keys)

src/key.js

Concats one or more Keys into one new Key.

concat(keys: Array<Key>): Key

Parameters

keys (Array<Key>)

Returns

Key:

namespaceType

src/key.js

The first component of a namespace. foo in foo:bar

namespaceType(ns: string): string

Parameters

ns (string)

Returns

string:

namespaceValue

src/key.js

The last component of a namespace, baz in foo:bar:baz.

namespaceValue(ns: string): string

Parameters

ns (string)

Returns

string:

flatten

src/key.js

Flatten array of arrays (only one level)

flatten(arr: Array<Array>): any

Parameters

arr (Array<Array>)

Returns

any:

put

src/adapter.js

Store the passed value under the passed key

put(key: Key, val: Buffer, options: Object): Promise<void>

Parameters

key (Key)

val (Buffer)

options

(Object
            = {})

Returns

Promise<void>:

putMany

src/adapter.js

Store the given key/value pairs

putMany(source: AsyncIterator<{key: Key, value: Buffer}>, options: Object): AsyncIterator<{key: Key, value: Buffer}>

Parameters

source (AsyncIterator<{key: Key, value: Buffer}>)

options

(Object
            = {})

Returns

AsyncIterator<{key: Key, value: Buffer}>:

get

src/adapter.js

Retrieve the value for the passed key

get(key: Key, options: Object): Promise<Buffer>

Parameters

key (Key)

options

(Object
            = {})

Returns

Promise<Buffer>:

getMany

src/adapter.js

Retrieve values for the passed keys

getMany(source: AsyncIterator<Key>, options: Object): AsyncIterator<Buffer>

Parameters

source (AsyncIterator<Key>)

options

(Object
            = {})

Returns

AsyncIterator<Buffer>:

has

src/adapter.js

Check for the existence of a value for the passed key

has(key: Key): Promise<bool>

Parameters

key (Key)

Returns

Promise<bool>:

delete

src/adapter.js

Remove the record for the passed key

delete(key: Key, options: Object): Promise<void>

Parameters

key (Key)

options

(Object
            = {})

Returns

Promise<void>:

deleteMany

src/adapter.js

Remove values for the passed keys

deleteMany(source: AsyncIterator<Key>, options: Object): AsyncIterator<Key>

Parameters

source (AsyncIterator<Key>)

options

(Object
            = {})

Returns

AsyncIterator<Key>:

batch

src/adapter.js

Create a new batch object.

batch(): Object

Returns

Object:

_all

src/adapter.js

Yield all datastore values

_all(q: Object, options: Object): AsyncIterable<{key: Key, value: Buffer}>

Parameters

q (Object)

options (Object)

Returns

AsyncIterable<{key: Key, value: Buffer}>:

query

src/adapter.js

Query the store.

query(q: Object, options: Object): AsyncIterable<Buffer>

Parameters

q (Object)

options (Object)

Returns

AsyncIterable<Buffer>: