com.artipie.asto.rx

Interface RxStorage

All Known Subinterfaces:

RxTransaction

All Known Implementing Classes:

RxStorageWrapper, RxTransactionWrapper

public interface RxStorage

A reactive version of Storage.

Since:

0.10

Method Summary

Modifier and Type	Method and Description
io.reactivex.Completable	delete(Key key) Removes value from storage.
io.reactivex.Single<Boolean>	exists(Key key) This file exists?
io.reactivex.Single<Collection<Key>>	list(Key prefix) Return the list of keys that start with this prefix, for example "foo/bar/".
io.reactivex.Completable	move(Key source, Key destination) Moves value from one location to another.
io.reactivex.Completable	save(Key key, Content content) Saves the bytes to the specified key.
io.reactivex.Single<Long>	size(Key key) Get value size.
io.reactivex.Single<RxTransaction>	transaction(List<Key> keys) Start a transaction with specified keys.
io.reactivex.Single<Content>	value(Key key) Obtain bytes by key.

Method Detail

exists

io.reactivex.Single<Boolean> exists(Key key)

This file exists?

Parameters:

key - The key (file name)

Returns:

TRUE if exists, FALSE otherwise

list

io.reactivex.Single<Collection<Key>> list(Key prefix)

Return the list of keys that start with this prefix, for example "foo/bar/".

Parameters:

prefix - The prefix.

Returns:

Collection of relative keys.

save

io.reactivex.Completable save(Key key,
                              Content content)

Saves the bytes to the specified key.

Parameters:

key - The key

content - Bytes to save

Returns:

Completion or error signal.

move

io.reactivex.Completable move(Key source,
                              Key destination)

Moves value from one location to another.

Parameters:

source - Source key.

destination - Destination key.

Returns:

Completion or error signal.

size

io.reactivex.Single<Long> size(Key key)

Get value size.

Parameters:

key - The key of value.

Returns:

Size of value in bytes.

value

io.reactivex.Single<Content> value(Key key)

Obtain bytes by key.

Parameters:

key - The key

Returns:

Bytes.

delete

io.reactivex.Completable delete(Key key)

Removes value from storage. Fails if value does not exist.

Parameters:

key - Key for value to be deleted.

Returns:

Completion or error signal.

transaction

io.reactivex.Single<RxTransaction> transaction(List<Key> keys)

Start a transaction with specified keys.

Parameters:

keys - The keys regarding which transaction is atomic

Returns:

Transaction