com.microsoft.applicationinsights.internal.config

Class ReflectionUtils

java.lang.Object

com.microsoft.applicationinsights.internal.config.ReflectionUtils

public final class ReflectionUtils
extends java.lang.Object

Utililty methods for dealing with reflection Created by gupele on 8/7/2016.

Constructor Summary

Constructors

Constructor and Description
ReflectionUtils()

Method Summary

Modifier and Type	Method and Description
static <V,A> boolean	activateMethod(java.lang.Object object, java.lang.String methodName, V value, A argumentClass)
static <T> T	createInstance(java.lang.String className, java.lang.Class<T> interfaceClass) Creates an instance from its name.
static <T,A> T	createInstance(java.lang.String className, java.lang.Class<T> interfaceClass, java.lang.Class<A> argumentClass, A argument) Creates an instance from its name.
static <T> void	loadComponents(java.lang.Class<T> clazz, java.util.List<T> list, java.util.Collection<AddTypeXmlElement> classNames) Generic method that creates instances based on their names and adds them to a Collection Note that the class does its 'best effort' to create an instance and will not fail the method if an instance (or more) was failed to create.

Methods inherited from class java.lang.Object

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

Constructor Detail

ReflectionUtils

public ReflectionUtils()

Method Detail

createInstance

public static <T> T createInstance(java.lang.String className,
                                   java.lang.Class<T> interfaceClass)

Creates an instance from its name. We suppress Java compiler warnings for Generic casting Note that currently we 'swallow' all exceptions and simply return null if we fail

Type Parameters:

T - The class type to create

Parameters:

className - The class we create an instance of

interfaceClass - The class' parent interface we wish to work with

Returns:

The instance or null if failed

createInstance

public static <T,A> T createInstance(java.lang.String className,
                                     java.lang.Class<T> interfaceClass,
                                     java.lang.Class<A> argumentClass,
                                     A argument)

Creates an instance from its name. We suppress Java compiler warnings for Generic casting The class is created by using a constructor that has one parameter which is sent to the method Note that currently we 'swallow' all exceptions and simply return null if we fail

Type Parameters:

T - The class type to create

A - The class type as the Ctor argument

Parameters:

className - The class we create an instance of

interfaceClass - The class' parent interface we wish to work with

argumentClass - Type of class to use as argument for Ctor

argument - The argument to pass the Ctor

Returns:

The instance or null if failed

activateMethod

public static <V,A> boolean activateMethod(java.lang.Object object,
                                           java.lang.String methodName,
                                           V value,
                                           A argumentClass)

Type Parameters:

V - - Generic for value class

A - - Generic for argument class

Parameters:

object - - The instance we work with

methodName - - The method to activate

value - - The value to pass to the method

argumentClass - - The argument class

Returns:

- True if method found and activation was ok, otherwise false.

loadComponents

public static <T> void loadComponents(java.lang.Class<T> clazz,
                                      java.util.List<T> list,
                                      java.util.Collection<AddTypeXmlElement> classNames)

Generic method that creates instances based on their names and adds them to a Collection Note that the class does its 'best effort' to create an instance and will not fail the method if an instance (or more) was failed to create. This is naturally, a policy we can easily replace

Type Parameters:

T - The class type to create

Parameters:

clazz - The class all instances should have

list - The container of instances, this is where we store our instances that we create

classNames - Classes to create.