org.jooby.funzy

Class When<V>

java.lang.Object

org.jooby.funzy.When<V>

Type Parameters:

V - Input type.

public class When<V>
extends Object

Functional idiom for switch/case statement. Basic example:

{code@
   import static org.jooby.funzy.When.when;

   Object value = ...;
   String result = when(value)
     .is(Number.class, "Got a number")
     .is(String.class, "Got a string")
     .orElse("Unknown");
   System.out.println(result);
 }

Automatic cast example:

   import static org.jooby.funzy.When.when;

   Object value = ...;
   int result = when(value)
     .is(Integer.class, i -> i * 2)
     .orElse(-1);

   System.out.println(result);
 

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	When.Value<V,R>

Constructor Summary

Constructors

Constructor and Description
When(V source)

Method Summary

Modifier and Type	Method and Description
<T extends V,R> When.Value<V,R>	is(Class<T> predicate, R result)
<T extends V,R> When.Value<V,R>	is(Class<T> predicate, Throwing.Function<T,R> result)
<T extends V,R> When.Value<V,R>	is(Throwing.Predicate<T> predicate, Throwing.Function<T,R> result)
<T extends V,R> When.Value<V,R>	is(Throwing.Predicate<T> predicate, Throwing.Supplier<R> result)
<R> When.Value<V,R>	is(V value, R result)
<R> When.Value<V,R>	is(V value, Throwing.Supplier<R> result)
static <V> When<V>	when(V value)

Methods inherited from class java.lang.Object

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

Constructor Detail

When

public When(V source)

Method Detail

when

public static final <V> When<V> when(V value)

is

public <R> When.Value<V,R> is(V value,
                              R result)

is

public <T extends V,R> When.Value<V,R> is(Class<T> predicate,
                                          R result)

is

public <R> When.Value<V,R> is(V value,
                              Throwing.Supplier<R> result)

is

public <T extends V,R> When.Value<V,R> is(Class<T> predicate,
                                          Throwing.Function<T,R> result)

is

public <T extends V,R> When.Value<V,R> is(Throwing.Predicate<T> predicate,
                                          Throwing.Supplier<R> result)

is

public <T extends V,R> When.Value<V,R> is(Throwing.Predicate<T> predicate,
                                          Throwing.Function<T,R> result)