/**
* Constructs a base task with a name.
*
* @param name the name for this task.
*/
public BaseTask(final String name) {
super(Promises.<T>settable());
_name = truncate(name);
final State state = State.INIT;
_shallowTraceBuilder = new ShallowTraceBuilder(_id);
_shallowTraceBuilder.setName(getName());
_shallowTraceBuilder.setResultType(ResultType.UNFINISHED);
_stateRef = new AtomicReference<State>(state);
}
@Override
protected Promise<List<T>> run(final Context context) throws Exception {
final SettablePromise<List<T>> result = Promises.settable();
final PromiseListener<?> listener =
new PromiseListener<Object>() {
@Override
public void onResolved(Promise<Object> resolvedPromise) {
boolean allEarlyFinish = true;
final List<T> taskResult = new ArrayList<T>();
final List<Throwable> errors = new ArrayList<Throwable>();
for (Task<? extends T> task : _tasks) {
if (task.isFailed()) {
if (allEarlyFinish && ResultType.fromTask(task) != ResultType.EARLY_FINISH) {
allEarlyFinish = false;
}
errors.add(task.getError());
} else {
taskResult.add(task.get());
}
}
if (!errors.isEmpty()) {
result.fail(
allEarlyFinish
? errors.get(0)
: new MultiException("Multiple errors in 'ParTask' task.", errors));
} else {
result.done(taskResult);
}
}
};
InternalUtil.after(listener, _tasks.toArray(new Task<?>[_tasks.size()]));
for (Task<?> task : _tasks) {
context.run(task);
}
return result;
}