Skip to main content
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [List Home]
Re: [mylyn-integrators] Missing Factory to Externalize Tasklist 
The TaskListMigrator and TaskListFactory are exclusive. Here are some notes I 
made while porting the web connector:

In Mylyn 3.0 the data model of the task list has changed. Elements in the task 
list are now managed by the tasks framework and connectors do not extend 
AbstractTask or AbstractRepositoryQuery with their own implementation. Task 
list externalization that previously required connectors to provide an 
implementation of AbstractTaskListFactory is now encapsulated in the 
framework. 

In order to migrate the Mylyn 2.x tasklist.xml.zip to the new tasks.xml.zip 
file connectors need to extend AbstractTaskListMigrator. When a Mylyn 2.x 
task list is read the migrator is invoked for migrating query and tasks 
elements. The migration is only done once. 

The task list migrator is registered through the 
org.eclipse.mylyn.tasks.ui.repositories extension point. The taskListFactory 
element is replaced by taskListMigrator:

<extension
  id="org.eclipse.mylyn.web.repository"
  name="Generic web-based access (Advanced)"
  point="org.eclipse.mylyn.tasks.ui.repositories">
    <connectorCore ... />
    <connectorUi ... />
    <taskListMigrator
      class="org.eclipse.mylyn.internal.web.tasks.WebTaskListMigrator">
    </taskListMigrator>
</extension>

The implementating of AbstractTaskListFactory.createTask() moved to 
AbstractTaskListMigrator.migrateTask(). Instead of creating an instance of a 
custom task class connector set custom state on task classes through the 
setAttribute() method:

WebTaskListMigrator {
@Override
  public void migrateTask(ITask task, Element element) {
    if (element.hasAttribute(KEY_PREFIX)) {
      task.setAttribute(WebRepositoryConnector.KEY_TASK_PREFIX, 
element.getAttribute(KEY_PREFIX));
    }
}

In addition connectors must migrate the last read time stamp (see 
JiraTaskListMigrator).

Connectors that used to override AbstractTask.getTaskKey() need to explicitly 
set the task key during mirgration. It is initialized to the task id by 
default (see JiraTaskListMigrator).

Connectors that used to override AbstractTask.isLocal() should now implement 
AbstractRepositoryConnector.hasLocalCompletionState() (see 
WebRepositoryConnector).

We are in the process of assembling bits and pieces of documentation. Please 
feel free to ask if you have any further questions.

Steffen


On Monday 09 June 2008, David Carver wrote:
> David Carver wrote:
> > I'm in the process of migratting the mantis bugtracker connector to
> > the new 3.0 API, and I keep getting an error message saying it's
> > 'Missing Factory to Externalize TaskList".   I've implemented a
> > TaskListMigrator for the connector, and setup the extension point, but
> > I keep getting the error.
>
> In order to get this to work, I had to also include the deprecated
> TaskListFactory implementation class.   It appears that the
> DelegatingTaskExternalizer is still requiring this extension point even
> though the migration docs say that it has been deprecated.
>
> Dave
>
>
> _______________________________________________
> mylyn-integrators mailing list
> mylyn-integrators@xxxxxxxxxxx
> https://dev.eclipse.org/mailman/listinfo/mylyn-integrators



-- 
Steffen Pingel - steffenp@xxxxxx - http://steffenpingel.de

Back to the top