joptsimple.internal

Class Reflection

java.lang.Object

joptsimple.internal.Reflection

public final class Reflection
extends java.lang.Object

Helper methods for reflection.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	Reflection()

Method Summary

Modifier and Type	Method and Description
private static <V> ValueConverter<V>	constructorConverter(java.lang.Class<V> clazz)
static <V> V	convertWith(ValueConverter<V> converter, java.lang.String raw)
static <V> ValueConverter<V>	findConverter(java.lang.Class<V> clazz) Finds an appropriate value converter for the given class.
static <T> T	instantiate(java.lang.reflect.Constructor<T> constructor, java.lang.Object... args) Invokes the given constructor with the given arguments.
static java.lang.Object	invoke(java.lang.reflect.Method method, java.lang.Object... args) Invokes the given static method with the given arguments.
private static boolean	meetsConverterRequirements(java.lang.reflect.Method method, java.lang.Class<?> expectedReturnType)
private static java.lang.RuntimeException	reflectionException(java.lang.Exception ex)
private static <V> ValueConverter<V>	valueOfConverter(java.lang.Class<V> clazz)

Methods inherited from class java.lang.Object

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

Constructor Detail

Reflection

private Reflection()

Method Detail

findConverter

public static <V> ValueConverter<V> findConverter(java.lang.Class<V> clazz)

Finds an appropriate value converter for the given class.

Type Parameters:

V - a constraint on the class object to introspect

Parameters:

clazz - class to introspect on

Returns:

a converter method or constructor

valueOfConverter

private static <V> ValueConverter<V> valueOfConverter(java.lang.Class<V> clazz)

constructorConverter

private static <V> ValueConverter<V> constructorConverter(java.lang.Class<V> clazz)

instantiate

public static <T> T instantiate(java.lang.reflect.Constructor<T> constructor,
                                java.lang.Object... args)

Invokes the given constructor with the given arguments.

Type Parameters:

T - constraint on the type of the objects yielded by the constructor

Parameters:

constructor - constructor to invoke

args - arguments to hand to the constructor

Returns:

the result of invoking the constructor

Throws:

ReflectionException - in lieu of the gaggle of reflection-related exceptions

invoke

public static java.lang.Object invoke(java.lang.reflect.Method method,
                                      java.lang.Object... args)

Invokes the given static method with the given arguments.

Parameters:

method - method to invoke

args - arguments to hand to the method

Returns:

the result of invoking the method

Throws:

ReflectionException - in lieu of the gaggle of reflection-related exceptions

convertWith

public static <V> V convertWith(ValueConverter<V> converter,
                                java.lang.String raw)

meetsConverterRequirements

private static boolean meetsConverterRequirements(java.lang.reflect.Method method,
                                                  java.lang.Class<?> expectedReturnType)

reflectionException

private static java.lang.RuntimeException reflectionException(java.lang.Exception ex)