Package org.pipservices3.commons.reflect

Class MethodReflector

java.lang.Object

org.pipservices3.commons.reflect.MethodReflector

public class MethodReflector
extends Object

Helper class to perform method introspection and dynamic invocation.

This class has symmetric implementation across all languages supported by Pip.Services toolkit and used to support dynamic data processing.

Because all languages have different casing and case sensitivity rules, this MethodReflector treats all method names as case insensitive.

### Example ###

 
 MyObject myObj = new MyObject();

 List<String> methods = MethodReflector.getMethodNames();
 MethodReflector.hasMethod(myObj, "myMethod");
 MethodReflector.invokeMethod(myObj, "myMethod", 123);
 
 

Constructor Summary

Constructors

Constructor	Description
MethodReflector()

Method Summary

Modifier and Type	Method	Description
static List<String>	getMethodNames(Object obj)	Gets names of all methods implemented in specified object.
static boolean	hasMethod(Object obj, String name)	Checks if object has a method with specified name..
static Object	invokeMethod(Object obj, String name, Object... args)	Invokes an object method by its name with specified parameters.

Methods inherited from class java.lang.Object

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

Constructor Details

MethodReflector

public MethodReflector()

Method Details

hasMethod

public static boolean hasMethod(Object obj,
 String name)

Checks if object has a method with specified name..

Parameters:

obj - an object to introspect.

name - a name of the method to check.

Returns:

true if the object has the method and false if it doesn't.

invokeMethod

public static Object invokeMethod(Object obj,
 String name,
 Object... args)

Invokes an object method by its name with specified parameters.

Parameters:

obj - an object to invoke.

name - a name of the method to invoke.

args - a list of method arguments.

Returns:

the result of the method invocation or null if method returns void.

getMethodNames

public static List<String> getMethodNames(Object obj)

Gets names of all methods implemented in specified object.

Parameters:

obj - an objec to introspect.

Returns:

a list with method names.