Package org.instancio.spi

Interface InstancioServiceProvider.TypeResolver

Enclosing interface:

InstancioServiceProvider

public static interface InstancioServiceProvider.TypeResolver

Resolves subtype based on a given class.

An implementation of this interface can be returned via the InstancioServiceProvider.getTypeResolver() method.

Since:

2.11.0

Method Summary

Modifier and Type	Method	Description
Class<?>	getSubtype(Class<?> type)	Returns a subtype for the given type.

Method Details

getSubtype

Class<?> getSubtype(Class<?> type)

Returns a subtype for the given type.

Similar functionality can be achieved using:

• InstancioApi.subtype(TargetSelector, Class)
• Settings.mapType(Class, Class)

However, the methods above require specifying the subtypes manually. This class allows subtype resolution to be done automatically. For example, if this method maps an abstract Animal class to a concrete Dog class, then Instancio will generate objects based on this mapping:

   Animal animal = Instancio.create(Animal.class);
   assertThat(animal).isExactlyInstanceOf(Dog.class);
 

Parameters:

type - the type to map to a subtype

Returns:

the subtype class, or null if no subtype is defined

Throws:

InstancioSpiException - if the returned class is not a subtype of the argument class

Since:

2.11.0