com.fasterxml.jackson.databind.util

Interface LookupCache<K,V>

All Known Implementing Classes:

LRUMap

public interface LookupCache<K,V>

An interface describing the required API for the Jackson-databind Type cache.

Note that while interface itself does not specify synchronization requirements for implementations, specific use cases do. Typically implementations are expected to be thread-safe, that is, to handle synchronization.

Since:

2.12 (for forwards-compatiblity with 3.0)

Method Summary

Modifier and Type	Method and Description
void	clear() Method for removing all contents this cache has.
V	get(Object key) NOTE: key is of type Object only to retain binary backwards-compatibility
V	put(K key, V value)
V	putIfAbsent(K key, V value)
int	size()

Method Detail

size

int size()

Returns:

Number of entries currently in cache: may be approximate, only to be used for diagnostics, metrics reporting

get

V get(Object key)

NOTE: key is of type Object only to retain binary backwards-compatibility

Parameters:

key -

Returns:

value associated with key (can return null)

put

V put(K key,
      V value)

putIfAbsent

V putIfAbsent(K key,
              V value)

clear

void clear()

Method for removing all contents this cache has.