com.espertech.esper.util
Class ConstructorHelper

java.lang.Object
  com.espertech.esper.util.ConstructorHelper

public class ConstructorHelper
extends java.lang.Object

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

Constructor Summary

ConstructorHelper()

Method Summary

static java.lang.Object

invokeConstructor(java.lang.Class clazz, java.lang.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 Detail

ConstructorHelper

public ConstructorHelper()

Method Detail

invokeConstructor

public static java.lang.Object invokeConstructor(java.lang.Class clazz,
                                                 java.lang.Object[] arguments)
                                          throws java.lang.IllegalAccessException,
                                                 java.lang.NoSuchMethodException,
                                                 java.lang.reflect.InvocationTargetException,
                                                 java.lang.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:

java.lang.IllegalAccessException - thrown if no access to class

java.lang.NoSuchMethodException - thrown when the constructor is not found

java.lang.reflect.InvocationTargetException - thrown when the ctor throws and exception

java.lang.InstantiationException - thrown when the class cannot be loaded