class ProxyKeyValueStore<K, V, E, R> : KeyValueStore<K, V> (source)
A store used as a proxy for another store.
For example, we may want to store rich objects and transform them to a lower-level form, or reuse the same store across multiple usages.
unproxyKey - function to transform the key from the proxied store to the outer store
proxyKey - function to transform the key from this proxy to the proxied store
unproxyValue - function to transform the value from the proxied store to the outer store
proxyValue - function to transform the value from this proxy to the proxied store
coroutineContext - the kotlin coroutine context
<init> |
A store used as a proxy for another store. ProxyKeyValueStore(store: KeyValueStore<E, R>, unproxyKey: (E) -> K, proxyKey: (K) -> E, unproxyValue: (R) -> V, proxyValue: (K, V) -> R, coroutineContext: CoroutineContext = store.coroutineContext) |
coroutineContext |
the kotlin coroutine context val coroutineContext: CoroutineContext |
clear |
Clears the contents of the store. suspend fun clear(): Unit |
close |
Close the store fun close(): Unit |
containsKey |
Returns true if the store contains the key. suspend fun containsKey(key: K): Boolean |
get |
Retrieves data from the store. suspend fun get(key: K): V? |
keys |
Provides an iterator over the keys of the store. suspend fun keys(): Iterable<K> |
put |
Puts data into the store. suspend fun put(key: K, value: V): Unit |
open |
Opens a proxy store. fun <K, V, E, R> open(store: KeyValueStore<E, R>, unproxyKey: Function<E, K>, proxyKey: Function<K, E>, unproxyValue: Function<R, V>, proxyValue: BiFunction<K, V, R>): ProxyKeyValueStore<K, V, E, R> |