com.artipie.asto.rx

Class RxStorageWrapper

java.lang.Object

com.artipie.asto.rx.RxStorageWrapper

All Implemented Interfaces:

RxStorage

public final class RxStorageWrapper
extends Object
implements RxStorage

Reactive wrapper over Storage.

Since:

0.9

Constructor Summary

Constructors

Constructor and Description
RxStorageWrapper(Storage storage) Ctor.

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.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RxStorageWrapper

public RxStorageWrapper(Storage storage)

Ctor.

Parameters:

storage - The storage

Method Detail

exists

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

This file exists?

Specified by:

exists in interface RxStorage

Parameters:

key - The key (file name)

Returns:

TRUE if exists, FALSE otherwise

list

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

Description copied from interface: RxStorage

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

Specified by:

list in interface RxStorage

Parameters:

prefix - The prefix.

Returns:

Collection of relative keys.

save

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

Saves the bytes to the specified key.

Specified by:

save in interface RxStorage

Parameters:

key - The key

content - Bytes to save

Returns:

Completion or error signal.

move

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

Description copied from interface: RxStorage

Moves value from one location to another.

Specified by:

move in interface RxStorage

Parameters:

source - Source key.

destination - Destination key.

Returns:

Completion or error signal.

size

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

Description copied from interface: RxStorage

Get value size.

Specified by:

size in interface RxStorage

Parameters:

key - The key of value.

Returns:

Size of value in bytes.

value

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

Obtain bytes by key.

Specified by:

value in interface RxStorage

Parameters:

key - The key

Returns:

Bytes.

delete

public io.reactivex.Completable delete(Key key)

Description copied from interface: RxStorage

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

Specified by:

delete in interface RxStorage

Parameters:

key - Key for value to be deleted.

Returns:

Completion or error signal.

transaction

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

Start a transaction with specified keys. These specified keys are the scope of a transaction. You will be able to perform storage operations like RxStorage.save(Key, Content) or RxStorage.value(Key) only in the scope of a transaction.

Specified by:

transaction in interface RxStorage

Parameters:

keys - The keys regarding which transaction is atomic

Returns:

Transaction