io.asyncer.r2dbc.mysql.cache

Interface PrepareCache

public interface PrepareCache

An abstraction that considers cache of statement prepared results.

Method Summary

Modifier and Type	Method and Description
@Nullable Integer	getIfPresent(String key) Get the value of key in cache.
boolean	putIfAbsent(String key, int value, IntConsumer evict) Put the prepared result to the cache.

Method Detail

getIfPresent

@Nullable
@Nullable Integer getIfPresent(String key)

Get the value of key in cache.

Parameters:

key - the key which want to get.

Returns:

the value of key, which is usually prepared statement ID.

putIfAbsent

boolean putIfAbsent(String key,
                    int value,
                    IntConsumer evict)

Put the prepared result to the cache.

Parameters:

key - the key of value, which is usually SQL statements.

value - the value of key, which is usually prepared statement ID.

evict - eviction value handler.

Returns:

true if value has been put succeed.