// Deletes every content item and reference from exhibit with given guid.
public void DeleteExhibit(Guid id)
{
var exhibitsIDs = GetChildContentItemsIds(id); // list of ids of content items
// delete content items
while (exhibitsIDs.Count != 0)
{
var e = ContentItems.Find(exhibitsIDs.First());
ContentItems.Remove(e);
exhibitsIDs.RemoveAt(0);
}
Exhibit deleteExhibit = Exhibits.Find(id);
Exhibits.Remove(deleteExhibit);
}
/// <inheritdoc />
public override void Set(IEnumerable <ContentItem> contentItems)
{
bool anyset = false;
foreach (var item in contentItems)
{
ValidateKey(item.Key);
ValidateLocation(item.Location);
var contentItem = ContentItems.Find(item.Location, item.Key);
if (contentItem == null)
{
contentItem = ContentItems.Add(new ContentItem
{
Content = item.Content,
Key = item.Key,
Location = item.Location,
Id = GetId(item.Location, item.Key),
OriginalContent = item.OriginalContent
});
anyset = true;
_cache.AddItem(contentItem); //Add item to current cache
}
else
{
if (contentItem.Content != item.Content)
{
contentItem.Content = item.Content;
contentItem.OriginalContent = item.OriginalContent;
anyset = true;
_cache.UpdateItem(contentItem); //Update item in current cache
}
}
}
if (anyset)
{
_dataContext.SaveChanges();
}
}
/// <inheritdoc />
public override ContentItem GetOrCreate(string location, string key, string defaultContent)
{
ValidateKey(key);
ValidateLocation(location);
defaultContent = defaultContent ?? "";
//Search the cache in memory to reduce DB calls
var cachedContentItem = ContentItemsCached.Find(x => x.Location.Equals(location) &&
x.Key.Equals(key));
if (cachedContentItem == null)
{
var newContentItem = ContentItems.Add(new ContentItem
{
Content = defaultContent,
Key = key,
Location = location,
Id = GetId(location, key),
OriginalContent = defaultContent
});
_dataContext.SaveChanges();
_cache.AddItem(newContentItem); //Update the cache as well
}
if (cachedContentItem.OriginalContent != defaultContent)
{
var contentItem = ContentItems.Find(location, key);
contentItem.OriginalContent = defaultContent;
_dataContext.SaveChanges();
_cache.UpdateItemContent(contentItem); //Update the cache as well
}
return(cachedContentItem);
}
/// <inheritdoc />
public override void SetById(IEnumerable <KeyValuePair <string, string> > idContentPairs)
{
foreach (var item in idContentPairs)
{
ValidateId(item.Key);
string id = item.Key;
string location, key;
ParseId(id, out location, out key);
ValidateLocation(location);
ValidateKey(key);
var contentItem = AddIds(ContentItems.Find(location, key));
if (contentItem != null)
{
contentItem.Content = item.Value;
_cache.UpdateItemContent(contentItem); //Update the cached value
}
}
_dataContext.SaveChanges();
}