com.google.cloud.spring.core.util

Class MapBuilder<K,V>

java.lang.Object

com.google.cloud.spring.core.util.MapBuilder<K,V>

Type Parameters:

K - map key type

V - map value type

public final class MapBuilder<K,V>
extends Object

Utility for building an immutable, type-safe Map.

Underlying implementation uses a HashMap, but disallows null keys, null values, and duplicate keys. This is consistent with Java 9 Map.of() static factory method, which will eventually replace the uses of this utility.

Since:

1.1

Constructor Summary

Constructors

Constructor and Description
MapBuilder()

Method Summary

Modifier and Type	Method and Description
Map<K,V>	build()
Map<K,V>	buildModifiable()
MapBuilder<K,V>	put(K key, V value) Adds a unique non-null key/value pair.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MapBuilder

public MapBuilder()

Method Detail

put

public MapBuilder<K,V> put(K key,
                           V value)

Adds a unique non-null key/value pair.

Parameters:

key - non-null key

value - non-null value

Returns:

itself for chaining

build

public Map<K,V> build()

buildModifiable

public Map<K,V> buildModifiable()