com.suncode.pwfl.component.support

Class InvocableMethod

java.lang.Object

com.suncode.pwfl.component.support.InvocableMethod

@Api
public class InvocableMethod
extends Object

Wrapper around Method that allows to easily invoke method using dynamic ParameterBinder.

Author:

Cezary Kozar 31 maj 2016

Constructor Summary

Constructors

Constructor and Description
InvocableMethod(Method method)

Method Summary

Modifier and Type	Method and Description
Class<?>	getDeclaringClass() Returns class that declared this method Method.getDeclaringClass()
Method	getMethod() Returns original method
Annotation	getParameterAnnotation(int index, Class<? extends Annotation> annotationType) Returns parameter annotation of given class by parameter index.
Class<?>	getParameterClass(int index) Returns parameter class by parameter index.
int	getParameterCount() Returns parameter count
String	getParameterName(int index) Returns parameter name.
boolean	hasParameterAnnotation(int index, Class<? extends Annotation> annotationType) Returns true if parameter has given annotation.
Object	invoke(Object instance, ParameterBinder... binders) Invokes this method on given instance (may be null for static methods).
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

InvocableMethod

public InvocableMethod(Method method)

Method Detail

getMethod

public Method getMethod()

Returns original method

getDeclaringClass

public Class<?> getDeclaringClass()

Returns class that declared this method Method.getDeclaringClass()

getParameterCount

public int getParameterCount()

Returns parameter count

getParameterClass

public Class<?> getParameterClass(int index)

Returns parameter class by parameter index.

Parameters:

index - parameter index

Returns:

parameter class

getParameterAnnotation

public Annotation getParameterAnnotation(int index,
                                         Class<? extends Annotation> annotationType)

Returns parameter annotation of given class by parameter index.

Parameters:

index - parameter index

annotationType - annotation class

Returns:

annotation or null

hasParameterAnnotation

public boolean hasParameterAnnotation(int index,
                                      Class<? extends Annotation> annotationType)

Returns true if parameter has given annotation.

Parameters:

index - parameter index

annotationType - annotation class

Returns:

true if annotation exists

getParameterName

public String getParameterName(int index)

Returns parameter name. Parameter name is extracted from Param annotation or using LocalVariableTableParameterNameDiscoverer that reads parameter names form debug informations.

Parameters:

index - parameter index

Returns:

parameter name

invoke

public Object invoke(Object instance,
                     ParameterBinder... binders)
              throws IllegalAccessException,
                     IllegalArgumentException,
                     InvocationTargetException

Invokes this method on given instance (may be null for static methods). Provided binders are used to bind every method parameter. If single method parameter cannot be binded then IllegalArgumentException is thrown.

Binders are invoked in specified order.

Parameters:

instance - instance on which method will be invoked

binders - parameter binders

Returns:

invocation result

Throws:

IllegalAccessException

IllegalArgumentException

InvocationTargetException

See Also:

Method.invoke(Object, Object...)

toString

public String toString()

Overrides:

toString in class Object