net.sf.twip.util
Class Parameter

java.lang.Object
  net.sf.twip.util.Parameter

public abstract class Parameter
extends Object

In java.lang.reflect the parameters are not first class citizens: you can only access them by several index methods, and the name is not kept in the class file. This class tries to fill that gap as good as it goes.

Field Summary

protected int

index

Constructor Summary

Parameter(int index)

Method Summary

<T extends Annotation> T	getAnnotation(Class<T> annotationType)
abstract Annotation[]	getAnnotations()
int	getIndex()
abstract Method	getMethod()
abstract Class<?>	getType()
<T extends Annotation> boolean	isAnnotationPresent(Class<T> annotationType)
boolean	isCallable(Object value) Can that value be passed as this parameter? I.e.
static List<Parameter>	of(Constructor<?> constructor)
static List<Parameter>	of(Method method)
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

index

protected final int index

Constructor Detail

Parameter

public Parameter(int index)

Method Detail

of

public static List<Parameter> of(Method method)

of

public static List<Parameter> of(Constructor<?> constructor)

getIndex

public int getIndex()

getAnnotation

public <T extends Annotation> T getAnnotation(Class<T> annotationType)

Returns:

the annotation of that type or null if the parameter is not annotated with that type.

getAnnotations

public abstract Annotation[] getAnnotations()

getType

public abstract Class<?> getType()

getMethod

public abstract Method getMethod()

isAnnotationPresent

public <T extends Annotation> boolean isAnnotationPresent(Class<T> annotationType)

isCallable

public boolean isCallable(Object value)

Can that value be passed as this parameter? I.e. is it an instance of the correct type or (if it's not really primitive) null; correctly handles primitive types where Class.isInstance(Object) returns false for.

toString

public String toString()

Overrides:

toString in class Object