com.speedment.runtime.core.util

Interface ClassMapper<V>

Type Parameters:

V - the base type

public interface ClassMapper<V>

A generic Class mapper interface. I.e. a mapper that can associate a class to an implementation of that class. Often, an interface is used as class key and then a concrete implementing class is used as an association to that interface. This creates a pluggable architecture framework.

Since:

2.2.0

Author:

Per Minborg

Method Summary

Modifier and Type	Method and Description
<R extends V> R	getOrThrow(Class<R> clazz) Puts a new mapping and returns the mapping for the given class, or throws an exception if no mapping exists.
V	put(V item) Adds a mapping for an item.
Stream<Map.Entry<Class<?>,V>>	stream() Returns a Stream of all mappings that exists.

Method Detail

put

V put(V item)

Adds a mapping for an item.

Parameters:

item - to add

Returns:

the previous mapping that existed, or null

getOrThrow

<R extends V> R getOrThrow(Class<R> clazz)

Puts a new mapping and returns the mapping for the given class, or throws an exception if no mapping exists.

Type Parameters:

R - The class type

Parameters:

clazz - the class to use

Returns:

the mapping for the given class, or null if no mapping exists

stream

Stream<Map.Entry<Class<?>,V>> stream()

Returns a Stream of all mappings that exists.

Returns:

a Stream of all mappings that exists