```
@Experimental
public interface KeyValueStore<K,V>
```
A Reactive Key Value Store provides a highly concurrent and distributed data structure, non blocking and using reactive streams.

Since:

10.0

Author:

Katia Aresti, [email protected]

See Also:

Infinispan documentation

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`CompletionStage<Void>`	`clear()`	Clear the store.
`CompletionStage<Void>`	`delete(K key)`	Delete the key
`org.reactivestreams.Publisher<? extends Map.Entry<K,V>>`	`entries()`	Retrieve all entries
`CompletionStage<Long>`	`estimateSize()`	Estimate the size of the store
`org.reactivestreams.Publisher<KeyValueEntry<K,V>>`	`find(String ickleQuery)`	Executes the query and returns a reactive streams Publisher with the results
`org.reactivestreams.Publisher<KeyValueEntry<K,V>>`	`find(QueryRequest queryRequest)`	Find by QueryRequest.
`org.reactivestreams.Publisher<KeyValueEntry<K,V>>`	`findContinuously(String ickleQuery)`	Executes the query and returns a reactive streams Publisher with the results
`<T> org.reactivestreams.Publisher<KeyValueEntry<K,T>>`	`findContinuously(QueryRequest queryRequest)`	Executes the query and returns a reactive streams Publisher with the results
`CompletionStage<V>`	`get(K key)`	Get the value of the Key if such exists
`CompletionStage<Boolean>`	`insert(K key, V value)`	Insert the key/value if such key does not exist
`org.reactivestreams.Publisher<K>`	`keys()`	Retrieve all keys
`org.reactivestreams.Publisher<KeyValueEntry<K,V>>`	`listen(KeyValueStoreListener listener)`	Listens to the `KeyValueStoreListener`
`CompletionStage<Void>`	`save(K key, V value)`	Save the key/value.
`org.reactivestreams.Publisher<WriteResult<K>>`	`saveMany(org.reactivestreams.Publisher<Map.Entry<K,V>> pairs)`	Save many from a Publisher

- Method Detail
  - get
```
CompletionStage<V> get(K key)
```
    Get the value of the Key if such exists
    
    Parameters:
    
    key -
    
    Returns:
    
    the value
  - insert
```
CompletionStage<Boolean> insert(K key,
                                V value)
```
    Insert the key/value if such key does not exist
    
    Parameters:
    
    key -
    
    value -
    
    Returns:
    
    Void
  - save
```
CompletionStage<Void> save(K key,
                           V value)
```
    Save the key/value. If the key exists will replace the value
    
    Parameters:
    
    key -
    
    value -
    
    Returns:
    
    Void
  - delete
```
CompletionStage<Void> delete(K key)
```
    Delete the key
    
    Parameters:
    
    key -
    
    Returns:
    
    Void
  - keys
```
org.reactivestreams.Publisher<K> keys()
```
    Retrieve all keys
    
    Returns:
    
    Publisher
  - entries
```
org.reactivestreams.Publisher<? extends Map.Entry<K,V>> entries()
```
    Retrieve all entries
    
    Returns:
  - saveMany
```
org.reactivestreams.Publisher<WriteResult<K>> saveMany(org.reactivestreams.Publisher<Map.Entry<K,V>> pairs)
```
    Save many from a Publisher
    
    Parameters:
    
    pairs -
    
    Returns:
    
    Void
  - estimateSize
```
CompletionStage<Long> estimateSize()
```
    Estimate the size of the store
    
    Returns:
    
    Long, estimated size
  - clear
```
CompletionStage<Void> clear()
```
    Clear the store. If a concurrent operation puts data in the store the clear might not properly work
    
    Returns:
    
    Void
  - find
```
org.reactivestreams.Publisher<KeyValueEntry<K,V>> find(String ickleQuery)
```
    Executes the query and returns a reactive streams Publisher with the results
    
    Parameters:
    
    ickleQuery - query String
    
    Returns:
    
    Publisher reactive streams
  - find
```
org.reactivestreams.Publisher<KeyValueEntry<K,V>> find(QueryRequest queryRequest)
```
    Find by QueryRequest.
    
    Parameters:
    
    queryRequest -
    
    Returns:
  - findContinuously
```
org.reactivestreams.Publisher<KeyValueEntry<K,V>> findContinuously(String ickleQuery)
```
    Executes the query and returns a reactive streams Publisher with the results
    
    Parameters:
    
    ickleQuery - query String
    
    Returns:
    
    Publisher reactive streams
  - findContinuously
```
<T> org.reactivestreams.Publisher<KeyValueEntry<K,T>> findContinuously(QueryRequest queryRequest)
```
    Executes the query and returns a reactive streams Publisher with the results
    
    Parameters:
    
    queryRequest -
    
    Returns:
    
    Publisher reactive streams
  - listen
```
org.reactivestreams.Publisher<KeyValueEntry<K,V>> listen(KeyValueStoreListener listener)
```
    Listens to the KeyValueStoreListener
    
    Parameters:
    
    listener -
    
    Returns:
    
    Publisher reactive streams

Interface KeyValueStore<K,​V>

Method Summary

Method Detail

get

insert

save

delete

keys

entries

saveMany

estimateSize

clear

find

find

findContinuously

findContinuously

listen

Interface KeyValueStore<K,V>