public static void SetEventTopic(ObjectContext context, EventV2 source, Event theEvent)
{
try
{
//ignore null values
if (source.EventTopics == null)
return;
var topics = context.CreateObjectSet<EventTopic>();
var eventTopics = new List<EventTopic>();
foreach (var topicName in source.EventTopics.Select(e => e.Name))
{
var eventTopic = topics.Where(i => i.Name == topicName).FirstOrDefault();
//Ensure eventTopic exists
if (eventTopic == null)
{
//topic doesn't exist, create a new topic
eventTopic = new EventTopic()
{
Name = topicName,
IsEnabled = true
};
topics.AddObject(eventTopic);
}
eventTopics.Add(eventTopic);
}
UpdateEventTopic(theEvent, eventTopics, context);
}
catch (Exception ex)
{
throw new BusinessException("Error processing the event topic for event '" + theEvent.Title + "' - " + ex.Message, ex);
}
}
public void FilterByTopic()
{
//setup
var topic1 = new EventTopic { Id = 1 };
var topic2 = new EventTopic { Id = 2 };
var event1 = new Event { Id = 1 };
var event2 = new Event { Id = 2 };
event1.EventTopicAssociations.Add(new EventTopicAssociation { EventTopic = topic1, EventTopicId = topic1.Id });
_objectSet.Add(event1);
event2.EventTopicAssociations.Add(new EventTopicAssociation { EventTopic = topic2, EventTopicId = topic2.Id });
_objectSet.Add(event2);
//act
var filtered = _objectSet.AsQueryable().FilterByTopic(1);
//assert
AssertIncluded(filtered, 1);
AssertExcluded(filtered, 2, 3);
}
