Package com.espertech.esper.common.internal.util

Class ConstructorHelper

java.lang.Object

com.espertech.esper.common.internal.util.ConstructorHelper

public class ConstructorHelper
extends Object

Helper class to find and invoke a class constructors that matches the types of arguments supplied.

Constructor Summary

Constructors

Constructor	Description
ConstructorHelper()

Method Summary

Modifier and Type	Method	Description
static boolean	hasDefaultConstructor(Class clazz)
static Object	invokeConstructor(Class clazz, Object[] arguments)	Find and invoke constructor matching the argument number and types returning an instance of given class.

Methods inherited from class java.lang.Object

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

Constructor Details

ConstructorHelper

public ConstructorHelper()

Method Details

hasDefaultConstructor

public static boolean hasDefaultConstructor(Class clazz)

invokeConstructor

public static Object invokeConstructor(Class clazz,
 Object[] arguments)
                                throws IllegalAccessException,
NoSuchMethodException,
InvocationTargetException,
InstantiationException

Find and invoke constructor matching the argument number and types returning an instance of given class.

Parameters:

clazz - is the class of instance to construct

arguments - is the arguments for the constructor to match in number and type

Returns:

instance of class

Throws:

IllegalAccessException - thrown if no access to class

NoSuchMethodException - thrown when the constructor is not found

InvocationTargetException - thrown when the ctor throws and exception

InstantiationException - thrown when the class cannot be loaded