org.springframework.boot.util

Class Instantiator<T>

java.lang.Object

org.springframework.boot.util.Instantiator<T>

Type Parameters:

T - the type to instantiate

public class Instantiator<T>
extends Object

Simple factory used to instantiate objects by injecting available parameters.

Since:

2.4.0

Author:

Phillip Webb, Scott Frederick

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	Instantiator.AvailableParameters Callback used to register available parameters.
static interface	Instantiator.FailureHandler Strategy for handling a failure that occurs when instantiating a type.

Constructor Summary

Constructors

Constructor and Description
Instantiator(Class<?> type, Consumer<Instantiator.AvailableParameters> availableParameters) Create a new Instantiator instance for the given type.
Instantiator(Class<?> type, Consumer<Instantiator.AvailableParameters> availableParameters, Instantiator.FailureHandler failureHandler) Create a new Instantiator instance for the given type.

Method Summary

Modifier and Type	Method and Description
List<T>	instantiate(ClassLoader classLoader, Collection<String> names) Instantiate the given set of class name, injecting constructor arguments as necessary.
List<T>	instantiate(Collection<String> names) Instantiate the given set of class name, injecting constructor arguments as necessary.
List<T>	instantiateTypes(Collection<Class<?>> types) Instantiate the given set of classes, injecting constructor arguments as necessary.

Methods inherited from class java.lang.Object

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

Constructor Detail

Instantiator

public Instantiator(Class<?> type,
                    Consumer<Instantiator.AvailableParameters> availableParameters)

Create a new Instantiator instance for the given type.

Parameters:

type - the type to instantiate

availableParameters - consumer used to register available parameters

Instantiator

public Instantiator(Class<?> type,
                    Consumer<Instantiator.AvailableParameters> availableParameters,
                    Instantiator.FailureHandler failureHandler)

Create a new Instantiator instance for the given type.

Parameters:

type - the type to instantiate

availableParameters - consumer used to register available parameters

failureHandler - a Instantiator.FailureHandler that will be called in case of failure when instantiating objects

Since:

2.7.0

Method Detail

instantiate

public List<T> instantiate(Collection<String> names)

Instantiate the given set of class name, injecting constructor arguments as necessary.

Parameters:

names - the class names to instantiate

Returns:

a list of instantiated instances

instantiate

public List<T> instantiate(ClassLoader classLoader,
                           Collection<String> names)

Instantiate the given set of class name, injecting constructor arguments as necessary.

Parameters:

classLoader - the source classloader

names - the class names to instantiate

Returns:

a list of instantiated instances

Since:

2.4.8

instantiateTypes

public List<T> instantiateTypes(Collection<Class<?>> types)

Instantiate the given set of classes, injecting constructor arguments as necessary.

Parameters:

types - the types to instantiate

Returns:

a list of instantiated instances

Since:

2.4.8