net.sf.javagimmicks.util8

Class ReflectionSupplier<E>

java.lang.Object

net.sf.javagimmicks.util8.ReflectionSupplier<E>

Type Parameters:

E - the type of the instances to create

All Implemented Interfaces:

java.util.function.Supplier<E>

public class ReflectionSupplier<E>
extends Object
implements java.util.function.Supplier<E>

An implementation of Supplier that creates instances by calling a constructor on a given Class via reflection

Constructor Summary

Constructors

Constructor and Description
ReflectionSupplier(Class<? extends E> type) Configures this ReflectionSupplier to create instances by calling the default Constructor on the given type The constructor must be public and accessible, must belong to a non-abstract class and may not throw checked Exceptions.
ReflectionSupplier(Class<? extends E> type, Class<?>[] argTypes, java.util.function.Supplier<Object[]> argSupplier) Configures this ReflectionSupplier to create instances by calling the Constructor identified by the given Class object and list of constructor argument types on the given type taking the constructor arguments from the given argument Supplier.
ReflectionSupplier(Constructor<? extends E> constructor, java.util.function.Supplier<Object[]> argSupplier) Configures this ReflectionSupplier to create instances by calling the given Constructor taking the constructor arguments from the given argument Supplier.

Method Summary

Modifier and Type	Method and Description
E	get()

Methods inherited from class java.lang.Object

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

Constructor Detail

ReflectionSupplier

public ReflectionSupplier(Constructor<? extends E> constructor,
                          java.util.function.Supplier<Object[]> argSupplier)
                   throws IllegalArgumentException,
                          SecurityException

Configures this ReflectionSupplier to create instances by calling the given Constructor taking the constructor arguments from the given argument Supplier. The constructor must be public, must belong to a non-abstract class and may not throw checked Exceptions.

Parameters:

constructor - the Constructor to invoke to create new instances

argSupplier - the Supplier to invoke to get the constructor arguments

Throws:

IllegalArgumentException - if the given Constructor is not public, throws any checked Exception or belongs to an abstract class

SecurityException - if the given Constructor cannot be set accessible

ReflectionSupplier

public ReflectionSupplier(Class<? extends E> type,
                          Class<?>[] argTypes,
                          java.util.function.Supplier<Object[]> argSupplier)
                   throws IllegalArgumentException,
                          SecurityException,
                          NoSuchMethodException

Configures this ReflectionSupplier to create instances by calling the Constructor identified by the given Class object and list of constructor argument types on the given type taking the constructor arguments from the given argument Supplier. The constructor must be public, must belong to a non-abstract class and may not throw checked Exceptions.

Parameters:

type - the Class object identifying the type to generate instances of

argTypes - an array of Class objects identifying the parameter types of the constructor to find on the given type

argSupplier - the Supplier to invoke to get the constructor arguments

Throws:

IllegalArgumentException - if the given Constructor is not public, throws any checked Exception or belongs to an abstract class

NoSuchMethodException - if there is no matching Constructor on the given class

SecurityException - if access to the identified Constructor is secured via SecurityManager

ReflectionSupplier

public ReflectionSupplier(Class<? extends E> type)
                   throws IllegalArgumentException,
                          SecurityException,
                          NoSuchMethodException

Configures this ReflectionSupplier to create instances by calling the default Constructor on the given type The constructor must be public and accessible, must belong to a non-abstract class and may not throw checked Exceptions.

Parameters:

type - the Class object identifying the type to generate instances of

Throws:

IllegalArgumentException - if the default Constructor is not public, throws any checked Exception or belongs to an abstract class

NoSuchMethodException - if there is no default Constructor on the given class

SecurityException - if access to the default Constructor is secured via SecurityManager

Method Detail

get

public final E get()

Specified by:

get in interface java.util.function.Supplier<E>