org.hobbit.core.run

Class ComponentStarter

java.lang.Object

org.hobbit.core.run.ComponentStarter

public class ComponentStarter
extends Object

This class contains the main method starting a given Component.

Author:

Michael Röder (roeder@informatik.uni-leipzig.de)

Field Summary

Fields

Modifier and Type	Field and Description
private static boolean	closed
private static Component	component
private static int	ERROR_EXIT_CODE Exit code that is used if the program has to terminate because of an internal error.
private static org.slf4j.Logger	LOGGER

Constructor Summary

Constructors

Constructor and Description
ComponentStarter()

Method Summary

Modifier and Type	Method and Description
private static void	addShutdownHook()
private static void	closeComponent()
private static Component	createComponentInstance(String className) This method simply creates an instance of the given class by calling a constructor that needs no arguments and cats the newly created instance into a Component instance.
static void	main(String[] args) This is the main method creating and starting an instance of a Component with the given class name.

Methods inherited from class java.lang.Object

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

Field Detail

LOGGER

private static final org.slf4j.Logger LOGGER

ERROR_EXIT_CODE

private static final int ERROR_EXIT_CODE

Exit code that is used if the program has to terminate because of an internal error.

See Also:

Constant Field Values

component

private static Component component

closed

private static boolean closed

Constructor Detail

ComponentStarter

public ComponentStarter()

Method Detail

main

public static void main(String[] args)

This is the main method creating and starting an instance of a Component with the given class name.

Parameters:

args - The first element has to be the class name of the component.

createComponentInstance

private static Component createComponentInstance(String className)
                                          throws ClassNotFoundException,
                                                 NoSuchMethodException,
                                                 SecurityException,
                                                 InstantiationException,
                                                 IllegalAccessException,
                                                 IllegalArgumentException,
                                                 InvocationTargetException

This method simply creates an instance of the given class by calling a constructor that needs no arguments and cats the newly created instance into a Component instance. Note that this method assumes that a) there is a constructor that needs no arguments to be executed and b) the class with the given name is implementing the Constructor interface.

Parameters:

className - the name of the class implementing the Component interface.

Returns:

an instance of that class.

Throws:

ClassNotFoundException - - If the class with the given name can not be found.

NoSuchMethodException - - If there is no constructor that needs no parameters.

SecurityException - - If the constructor can not be accessed because of security policies.

InstantiationException - - If the class with the given class name represents an abstract class.

IllegalAccessException - - If the Constructor object is enforcing Java language access control and the underlying constructor is inaccessible.

IllegalArgumentException - - If the number of actual and formal parameters differ; if an unwrapping conversion for primitive arguments fails; or if, after possible unwrapping, a parameter value cannot be converted to the corresponding formal parameter type by a method invocation conversion; if this constructor pertains to an enum type. (Should not occur)

InvocationTargetException - - If the constructor throws an exception.

closeComponent

private static void closeComponent()

addShutdownHook

private static void addShutdownHook()