public XmlTask updateTask(
T transaction, Handle<XmlTask> handle, XmlTask partialNewTask, Principal user)
throws SQLException {
if (user == null) {
throw new AuthenticationNeededException("There is no user associated with this request");
}
// This needs to be a copy otherwise the cache will interfere with the changes
XmlTask currentTask;
{
final XmlTask t = getTask(transaction, handle);
if (t == null) {
return null;
}
currentTask = new XmlTask(t);
}
for (XmlItem newItem : partialNewTask.getItems()) {
if (newItem.getName() != null && newItem.getName().length() > 0) {
XmlItem currentItem = currentTask.getItem(newItem.getName());
if (currentItem != null) {
currentItem.setValue(newItem.getValue());
}
}
}
// Store the data
getTasks().set(transaction, handle, currentTask);
transaction.commit(); // the actual state isn't stored anyway.
// This may update the server.
currentTask.setState(partialNewTask.getState(), user);
return currentTask;
}
public Collection<XmlTask> getPendingTasks(T transaction, final Principal user) {
final Iterable<XmlTask> tasks = getTasks().iterable(transaction);
ArrayList<XmlTask> result = new ArrayList<>();
for (XmlTask task : tasks) {
if (!task.getState().isFinal()) {
result.add(task);
}
}
return result;
}
public boolean postTask(final T transaction, final XmlTask task) throws SQLException {
// This must be handled as the response can get lost without the transaction failing.
Handle<XmlTask> existingHandle =
getTasks().containsRemoteHandle(transaction, task.getRemoteHandle());
if (existingHandle != null) {
task.setHandleValue(existingHandle.getHandleValue());
return false; // no proper update
}
boolean result = getTasks().put(transaction, task) != null;
task.setState(NodeInstanceState.Acknowledged, task.getOwner()); // Only now mark as acknowledged
return result;
}
public NodeInstanceState finishTask(
final T transaction, final Handle<XmlTask> taskHandle, final Principal user)
throws SQLException {
if (user == null) {
throw new AuthenticationNeededException("There is no user associated with this request");
}
final XmlTask task = mTasks.get(transaction, taskHandle);
task.setState(NodeInstanceState.Complete, user);
if ((task.getState() == NodeInstanceState.Complete)
|| (task.getState() == NodeInstanceState.Failed)) {
mTasks.remove(transaction, taskHandle);
}
return task.getState();
}