r01f.reflection.fluent
Class MethodInvoker<T>

java.lang.Object
  r01f.reflection.fluent.MethodInvoker<T>

Type Parameters:

T - the return type of the method invocation. Usage example:

   // Equivalent to call 'person.setName("Luke")'
   Reflection.method("setName").withParameterTypes(String.class).in(person).invoke("Luke");
 
   // Equivalent to call 'person.concentrate()'
   Reflection.method("concentrate").in(person).invoke();
 
   // Equivalent to call 'person.getName()'
   String name = Reflection.method("getName").withReturnType(String.class).in(person).invoke();
 

public final class MethodInvoker<T>
extends java.lang.Object

Method invocation using reflection

Field Summary

private java.lang.reflect.Method	_method
private java.lang.Object	_targetObj

Constructor Summary

private

MethodInvoker(java.lang.Object target, java.lang.reflect.Method method)

Method Summary

private ReflectionException	_cannotInvokeMethod(java.lang.Throwable cause, java.lang.Object... args)
private static <T> MethodInvoker<T>	_createInvoker(java.lang.String methodName, java.lang.Object target, java.lang.Class<?>... parameterTypes)
private static java.lang.reflect.Method	_findMethod(java.lang.Class<?> type, java.lang.String methodName, java.lang.Class<?>[] parameterTypes)
private static java.lang.reflect.Method	_lookupInClassHierarchy(java.lang.String methodName, java.lang.Class<?> targetType, java.lang.Class<?>[] parameterTypes)
java.lang.reflect.Method	getMethod() Returns the "real" method managed by this class.
T	invoke(java.lang.Object... args) Invokes the method managed by this class using the given arguments.
(package private) static <T> MethodInvoker<T>	newInvoker(java.lang.String methodName, java.lang.Object target, java.lang.Class<?>... parameterTypes)
private static java.lang.Class<?>	typeOf(java.lang.Object target)

Methods inherited from class java.lang.Object

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

Field Detail

_targetObj

private final java.lang.Object _targetObj

_method

private final java.lang.reflect.Method _method

Constructor Detail

MethodInvoker

private MethodInvoker(java.lang.Object target,
                      java.lang.reflect.Method method)

Method Detail

newInvoker

static <T> MethodInvoker<T> newInvoker(java.lang.String methodName,
                                       java.lang.Object target,
                                       java.lang.Class<?>... parameterTypes)

invoke

public T invoke(java.lang.Object... args)

Invokes the method managed by this class using the given arguments.

Parameters:

args - the arguments to use to call the method managed by this class.

Returns:

the result of the method call.

Throws:

ReflectionError - if the method cannot be invoked.

getMethod

public java.lang.reflect.Method getMethod()

Returns the "real" method managed by this class.

Returns:

the "real" method managed by this class.

_createInvoker

private static <T> MethodInvoker<T> _createInvoker(java.lang.String methodName,
                                                   java.lang.Object target,
                                                   java.lang.Class<?>... parameterTypes)

typeOf

private static java.lang.Class<?> typeOf(java.lang.Object target)

_lookupInClassHierarchy

private static java.lang.reflect.Method _lookupInClassHierarchy(java.lang.String methodName,
                                                                java.lang.Class<?> targetType,
                                                                java.lang.Class<?>[] parameterTypes)

_findMethod

private static java.lang.reflect.Method _findMethod(java.lang.Class<?> type,
                                                    java.lang.String methodName,
                                                    java.lang.Class<?>[] parameterTypes)

_cannotInvokeMethod

private ReflectionException _cannotInvokeMethod(java.lang.Throwable cause,
                                                java.lang.Object... args)