private static void AddKeywords(IList <Keyword> keywords,
EfContainer container, BiblioDbContext context)
{
// collect the keywords to be assigned, adding the missing ones
List <EfKeywordContainer> requested = new List <EfKeywordContainer>();
foreach (Keyword keyword in keywords)
{
// find the keyword by its content, as we have no ID
EfKeyword efk = context.Keywords.FirstOrDefault(k =>
k.Value == keyword.Value && k.Language == keyword.Language);
// if not found, add it
if (efk == null)
{
efk = new EfKeyword
{
Language = keyword.Language,
Value = keyword.Value,
Valuex = StandardFilter.Apply(keyword.Value, true)
};
context.Keywords.Add(efk);
}
requested.Add(new EfKeywordContainer
{
Keyword = efk,
Container = container
});
}
// remove all the keywords which are no more requested
if (container.KeywordContainers != null)
{
foreach (EfKeywordContainer kc in container.KeywordContainers)
{
if (requested.All(r => r.KeywordId != kc.KeywordId))
{
context.KeywordContainers.Remove(kc);
}
}
}
else
{
container.KeywordContainers = new List <EfKeywordContainer>();
}
// add all those which are not yet present
foreach (EfKeywordContainer kc in requested)
{
if (container.KeywordContainers.All(
r => r.KeywordId != kc.KeywordId))
{
container.KeywordContainers.Add(kc);
}
}
}
/// <summary>
/// Deletes the container.
/// </summary>
/// <param name="id">The identifier.</param>
public void DeleteContainer(Guid id)
{
using (var db = GetContext())
{
EfContainer container = db.Containers.Find(id);
if (container != null)
{
db.Containers.Remove(container);
db.SaveChanges();
}
}
}
/// <summary>
/// Gets the work information corresponding to the specified container
/// entity.
/// </summary>
/// <param name="ef">The entity or null.</param>
/// <param name="context">The context.</param>
/// <returns>The object or null.</returns>
/// <exception cref="ArgumentNullException">context</exception>
public static WorkInfo GetWorkInfo(EfContainer ef, BiblioDbContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (ef == null)
{
return(null);
}
WorkInfo info = new WorkInfo
{
IsContainer = true,
Id = ef.Id,
Key = ef.Key,
Type = ef.Type?.Name,
Title = ef.Title,
Language = ef.Language,
Edition = ef.Edition,
YearPub = ef.YearPub,
PlacePub = ef.PlacePub,
Number = ef.Number
};
// authors
if (ef.AuthorContainers?.Count > 0)
{
info.Authors = (from aw in ef.AuthorContainers
select new WorkAuthor
{
Id = aw.AuthorId,
First = aw.Author?.First,
Last = aw.Author?.Last,
Role = aw.Role,
Ordinal = aw.Ordinal
}).ToList();
}
// keywords
if (ef.KeywordContainers?.Count > 0)
{
info.Keywords = (from kw in ef.KeywordContainers
select new Keyword
{
Language = kw.Keyword?.Language,
Value = kw.Keyword?.Value
}).ToList();
}
return(info);
}
/// <summary>
/// Adds or updates the specified container.
/// Container type, authors, and keywords are stored too.
/// As for authors, you can specify only the author's ID to assign
/// the work to an existing author; otherwise, the author will be
/// either added or updated as required. Keywords are added or
/// updated as required. Type is added if not found, even this should
/// not happen, as types are a predefined set.
/// If new, <paramref name="container"/> ID gets updated; the key is
/// always updated.
/// </summary>
/// <param name="container">The container.</param>
/// <exception cref="ArgumentNullException">container</exception>
public void AddContainer(Container container)
{
if (container == null)
{
throw new ArgumentNullException(nameof(container));
}
using (var db = GetContext())
{
EfContainer ef = EfHelper.GetEfContainer(container, db);
db.SaveChanges();
container.Id = ef.Id;
container.Key = ef.Key;
}
}
/// <summary>
/// Gets the container by its ID.
/// </summary>
/// <param name="id">The container's identifier.</param>
/// <returns>
/// Container, or null if not found
/// </returns>
public Container GetContainer(Guid id)
{
using (var db = GetContext())
{
EfContainer container = db.Containers
.AsNoTracking()
.Include(w => w.Type)
.Include(w => w.AuthorContainers)
.ThenInclude(aw => aw.Author)
.Include(w => w.KeywordContainers)
.ThenInclude(kw => kw.Keyword)
.FirstOrDefault(w => w.Id == id);
return(EfHelper.GetContainer(container));
}
}
private static void AddAuthors(IList <WorkAuthor> authors,
EfContainer container,
BiblioDbContext context)
{
// collect the authors to be assigned, adding the missing ones
List <EfAuthorContainer> requested = new List <EfAuthorContainer>();
foreach (WorkAuthor author in authors)
{
EfAuthor efa = GetEfAuthorFor(author, context);
if (efa == null)
{
continue;
}
requested.Add(new EfAuthorContainer
{
Author = efa,
Container = container
});
} // for
// remove all the no more requested authors
if (container.AuthorContainers != null)
{
foreach (EfAuthorContainer ac in container.AuthorContainers)
{
if (requested.All(r => r.AuthorId != ac.AuthorId))
{
context.AuthorContainers.Remove(ac);
}
}
}
else
{
container.AuthorContainers = new List <EfAuthorContainer>();
}
// add all those which are not yet present
foreach (EfAuthorContainer ac in requested)
{
if (container.AuthorContainers.All(
r => r.AuthorId != ac.AuthorId))
{
container.AuthorContainers.Add(ac);
}
}
}
/// <summary>
/// Gets the container object corresponding to the specified container
/// entity.
/// </summary>
/// <param name="ef">The entity or null.</param>
/// <returns>The container or null.</returns>
public static Container GetContainer(EfContainer ef)
{
if (ef == null)
{
return(null);
}
Container container = new Container
{
Id = ef.Id,
Key = ef.Key,
Type = ef.Type?.Id,
Title = ef.Title,
Language = ef.Language,
Edition = ef.Edition,
Publisher = ef.Publisher,
YearPub = ef.YearPub,
PlacePub = ef.PlacePub,
Location = ef.Location,
AccessDate = ef.AccessDate,
Note = ef.Note,
Number = ef.Number
};
// authors
if (ef.AuthorContainers?.Count > 0)
{
container.Authors.AddRange(from ac in ef.AuthorContainers
select new WorkAuthor
{
Last = ac.Author.Last,
First = ac.Author.First,
Role = ac.Role,
Ordinal = ac.Ordinal
});
}
// keywords
if (ef.KeywordContainers?.Count > 0)
{
container.Keywords.AddRange(from ak in ef.KeywordContainers
select GetKeyword(ak.Keyword));
}
return(container);
}
/// <summary>
/// Gets the container entity corresponding to the specified container.
/// </summary>
/// <param name="container">The container or null.</param>
/// <param name="context">The context.</param>
/// <returns>The entity or null.</returns>
/// <exception cref="ArgumentNullException">context</exception>
public static EfContainer GetEfContainer(Container container,
BiblioDbContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (container == null)
{
return(null);
}
// get the container unless it's new
EfContainer ef = container.Id != Guid.Empty
? context.Containers
.Include(c => c.AuthorContainers)
.Include(c => c.KeywordContainers)
.FirstOrDefault(c => c.Id == container.Id)
: null;
// if new or not found, add it with a new ID
if (ef == null)
{
if (container.Title == null)
{
return(null);
}
ef = new EfContainer();
context.Containers.Add(ef);
}
// update the container unless empty
if (container.Title != null)
{
ef.Type = GetOrCreateWorkType(container.Type, null, context);
ef.Title = container.Title;
ef.Titlex = StandardFilter.Apply(container.Title, true);
ef.Language = container.Language;
ef.Edition = container.Edition;
ef.Publisher = container.Publisher;
ef.YearPub = container.YearPub;
ef.PlacePub = container.PlacePub;
ef.Location = container.Location;
ef.AccessDate = container.AccessDate;
ef.Number = container.Number;
ef.Note = container.Note;
// authors
if (container.Authors?.Count > 0)
{
AddAuthors(container.Authors, ef, context);
}
// keywords
if (container.Keywords?.Count > 0)
{
AddKeywords(container.Keywords, ef, context);
}
// key
ef.Key = WorkKeyBuilder.PickKey(ef.Key, container);
// add key suffix if required and possible
if (ef.Key?.StartsWith(WorkKeyBuilder.MAN_KEY_PREFIX) != true)
{
char c = GetSuffixForKey(ef.Key, context);
if (c != '\0')
{
ef.Key += c;
}
}
}
return(ef);
}
