org.h2.util

Class Task

java.lang.Object

org.h2.util.Task

All Implemented Interfaces:

Runnable

public abstract class Task
extends Object
implements Runnable

A method call that is executed in a separate thread. If the method throws an exception, it is wrapped in a RuntimeException.

Field Summary

Fields

Modifier and Type	Field and Description
protected Object	result The result, if any.
protected boolean	stop A flag indicating the get() method has been called.

Constructor Summary

Constructors

Constructor and Description
Task()

Method Summary

Methods

Modifier and Type	Method and Description
abstract void	call() The method to be implemented.
Task	execute() Start the thread.
Object	get() Calling this method will set the stop flag and wait until the thread is stopped.
Exception	getException() Get the exception that was thrown in the call (if any).
void	run()

Methods inherited from class java.lang.Object

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

Field Detail

stop

protected volatile boolean stop

A flag indicating the get() method has been called.

result

protected Object result

The result, if any.

Constructor Detail

Task

public Task()

Method Detail

call

public abstract void call()
                   throws Exception

The method to be implemented.

Throws:

Exception - any exception is wrapped in a RuntimeException

run

public void run()

Specified by:

run in interface Runnable

execute

public Task execute()

Start the thread.

Returns:

this

get

public Object get()

Calling this method will set the stop flag and wait until the thread is stopped.

Returns:

the result, or null

Throws:

RuntimeException - if an exception in the method call occurs

getException

public Exception getException()

Get the exception that was thrown in the call (if any).

Returns:

the exception or null