/// <summary>
/// Gets the specified page of authors matching <paramref name="filter" />.
/// </summary>
/// <param name="filter">The filter.</param>
/// <returns>
/// Page of authors.
/// </returns>
/// <exception cref="ArgumentNullException">filter</exception>
public DataPage <Author> GetAuthors(AuthorFilter filter)
{
if (filter == null)
{
throw new ArgumentNullException(nameof(filter));
}
PrepareAuthorFilter(filter);
using (var db = GetContext())
{
var authors = db.Authors.AsQueryable();
if (!string.IsNullOrEmpty(filter.Last))
{
authors = authors.Where(a => a.Lastx.Contains(filter.Last));
}
int tot = authors.Count();
// sort and page
authors = authors.OrderBy(a => a.Last)
.ThenBy(a => a.First)
.ThenBy(a => a.Suffix)
.ThenBy(a => a.Id);
var pgAuthors = authors.Skip(filter.GetSkipCount())
.Take(filter.PageSize)
.ToList();
return(new DataPage <Author>(
filter.PageNumber,
filter.PageSize,
tot,
(from a in pgAuthors select EfHelper.GetAuthor(a)).ToList()));
}
}
/// <summary>
/// Gets the keyword with the specified ID.
/// </summary>
/// <param name="id">The identifier.</param>
/// <returns>The keyword or null if not found.</returns>
public Keyword GetKeyword(int id)
{
using (var db = GetContext())
{
EfKeyword ef = db.Keywords.Find(id);
return(ef != null?EfHelper.GetKeyword(ef) : null);
}
}
/// <summary>
/// Gets the author with the specified ID.
/// </summary>
/// <param name="id">The identifier.</param>
/// <returns>
/// The author, or null if not found.
/// </returns>
public Author GetAuthor(Guid id)
{
using (var db = GetContext())
{
EfAuthor ef = db.Authors.Find(id);
return(EfHelper.GetAuthor(ef));
}
}
/// <summary>
/// Gets the type with the specified ID.
/// </summary>
/// <param name="id">The identifier.</param>
/// <returns>The type, or null if not found.</returns>
/// <exception cref="ArgumentNullException">id</exception>
public WorkType GetWorkType(string id)
{
if (id == null)
{
throw new ArgumentNullException(nameof(id));
}
using (var db = GetContext())
{
EfWorkType ef = db.WorkTypes.Find(id);
return(EfHelper.GetWorkType(ef));
}
}
/// <summary>
/// Adds or updates the type with the specified ID and name.
/// </summary>
/// <param name="type">The type.</param>
/// <exception cref="ArgumentNullException">type</exception>
public void AddWorkType(WorkType type)
{
if (type == null)
{
throw new ArgumentNullException(nameof(type));
}
using (var db = GetContext())
{
EfWorkType ef = EfHelper.GetEfWorkType(type, db);
db.SaveChanges();
}
}
/// <summary>
/// Adds or updates the specified keyword.
/// </summary>
/// <param name="keyword">The keyword.</param>
/// <returns>The keyword's ID.</returns>
/// <exception cref="ArgumentNullException">keyword</exception>
public int AddKeyword(Keyword keyword)
{
if (keyword == null)
{
throw new ArgumentNullException(nameof(keyword));
}
using (var db = GetContext())
{
EfKeyword ef = EfHelper.GetEfKeyword(keyword, db);
db.SaveChanges();
return(ef.Id);
}
}
/// <summary>
/// Adds or updates the specified author.
/// If the ID is not specified, a new author will be created and
/// the <paramref name="author"/>'s ID will be updated.
/// </summary>
/// <param name="author">The author.</param>
/// <exception cref="ArgumentNullException">author</exception>
public void AddAuthor(Author author)
{
if (author == null)
{
throw new ArgumentNullException(nameof(author));
}
using (var db = GetContext())
{
EfAuthor ef = EfHelper.GetEfAuthor(author, db);
db.SaveChanges();
author.Id = ef.Id;
}
}
/// <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));
}
}
/// <summary>
/// Adds or updates the specified work.
/// Work type, container, 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. As for the container,
/// you can specify only its ID to assign the work to it; otherwise,
/// the container will be added or updated as required.
/// If new, <paramref name="work"/> ID gets updated; the key is
/// always updated.
/// </summary>
/// <param name="work">The work.</param>
/// <exception cref="ArgumentNullException">work</exception>
public void AddWork(Work work)
{
if (work == null)
{
throw new ArgumentNullException(nameof(work));
}
using (var db = GetContext())
{
EfWork ef = EfHelper.GetEfWork(work, db);
db.SaveChanges();
work.Id = ef.Id;
work.Key = ef.Key;
}
}
/// <summary>
/// Gets the specified page of keywords.
/// </summary>
/// <param name="filter">The filter.</param>
/// <returns>The page.</returns>
public DataPage <Keyword> GetKeywords(KeywordFilter filter)
{
PrepareKeywordFilter(filter);
using (var db = GetContext())
{
var keywords = db.Keywords.AsQueryable();
if (!string.IsNullOrEmpty(filter.Language))
{
keywords = keywords.Where(k => k.Language == filter.Language);
}
if (!string.IsNullOrEmpty(filter.Value))
{
// filter value for keyword can be language:value
int i = filter.Value.IndexOf(':');
if (i == 3)
{
string l = filter.Value.Substring(0, 3);
keywords = keywords.Where(k => k.Language == l);
if (filter.Value.Length > 4)
{
string v = filter.Value.Substring(4);
keywords = keywords.Where(k => k.Valuex.Contains(v));
}
}
else
{
keywords = keywords.Where(k => k.Valuex.Contains(filter.Value));
}
}
int tot = keywords.Count();
// sort and page
keywords = keywords.OrderBy(k => k.Language)
.ThenBy(k => k.Value)
.ThenBy(k => k.Id);
keywords = keywords.Skip(filter.GetSkipCount()).Take(filter.PageSize);
return(new DataPage <Keyword>(
filter.PageNumber,
filter.PageSize,
tot,
(from k in keywords select EfHelper.GetKeyword(k)).ToList()));
}
}
/// <summary>
/// Gets the work by its ID.
/// </summary>
/// <param name="id">The work's identifier.</param>
/// <returns>
/// Work, or null if not found
/// </returns>
public Work GetWork(Guid id)
{
using (var db = GetContext())
{
EfWork work = db.Works
.AsNoTracking()
.Include(w => w.Type)
.Include(w => w.Container)
.Include(w => w.AuthorWorks)
.ThenInclude(aw => aw.Author)
.Include(w => w.KeywordWorks)
.ThenInclude(kw => kw.Keyword)
.FirstOrDefault(w => w.Id == id);
return(EfHelper.GetWork(work));
}
}
/// <summary>
/// Gets the page of types matching the specified filter,
/// or all of them when page size is 0.
/// </summary>
/// <param name="filter">The filter.</param>
/// <returns>The types page.</returns>
/// <exception cref="ArgumentNullException">filter</exception>
public DataPage <WorkType> GetWorkTypes(WorkTypeFilter filter)
{
if (filter == null)
{
throw new ArgumentNullException(nameof(filter));
}
using (var db = GetContext())
{
IQueryable <EfWorkType> types = db.WorkTypes.AsQueryable();
if (!string.IsNullOrEmpty(filter.Name))
{
types = types.Where(t => t.Name.Contains(filter.Name));
}
int tot = types.Count();
// sort and page
types = types.OrderBy(t => t.Name).ThenBy(t => t.Id);
List <EfWorkType> pgTypes;
if (filter.PageSize > 0)
{
pgTypes = types.Skip(filter.GetSkipCount())
.Take(filter.PageSize)
.ToList();
}
else
{
pgTypes = types.Skip(filter.GetSkipCount()).ToList();
}
return(new DataPage <WorkType>(
filter.PageNumber,
filter.PageSize,
tot,
(from t in pgTypes select EfHelper.GetWorkType(t)).ToList()));
}
}
/// <summary>
/// Gets the specified page of filtered works.
/// </summary>
/// <param name="filter">The filter.</param>
/// <returns>The works page.</returns>
/// <exception cref="ArgumentNullException">filter</exception>
public DataPage <WorkInfo> GetWorks(WorkFilter filter)
{
if (filter == null)
{
throw new ArgumentNullException(nameof(filter));
}
PrepareWorkFilter(filter);
using (var db = GetContext())
{
IQueryable <EfWork> works = db.Works
.AsNoTracking()
.Include(w => w.Type)
.Include(w => w.Container)
.Include(w => w.AuthorWorks)
.ThenInclude(aw => aw.Author)
.Include(w => w.KeywordWorks)
.ThenInclude(kw => kw.Keyword);
if (filter.IsMatchAnyEnabled)
{
// we need a predicate builder to chain clauses with OR
// (note: this requires package LinqKit.Core)
// http://www.albahari.com/nutshell/predicatebuilder.aspx
var predicate = PredicateBuilder.New <EfWork>();
if (!string.IsNullOrEmpty(filter.Key))
{
predicate.Or(w => w.Key.Equals(filter.Key));
}
if (!string.IsNullOrEmpty(filter.Type))
{
predicate.Or(w => w.Type.Equals(filter.Type));
}
if (filter.AuthorId != Guid.Empty)
{
predicate.Or(w => w.AuthorWorks.Any(
aw => aw.AuthorId == filter.AuthorId));
}
if (!string.IsNullOrEmpty(filter.LastName))
{
predicate.Or(w =>
w.AuthorWorks.Any(aw =>
aw.Author.Lastx.Contains(filter.LastName)));
}
if (!string.IsNullOrEmpty(filter.Language))
{
predicate.Or(w => w.Language.Equals(filter.Language));
}
if (!string.IsNullOrEmpty(filter.Title))
{
predicate.Or(w => w.Titlex.Contains(filter.Title));
}
if (filter.ContainerId != Guid.Empty)
{
predicate.Or(w => w.Container.Id.Equals(filter.ContainerId));
}
if (!string.IsNullOrEmpty(filter.Keyword))
{
predicate.Or(w => w.KeywordWorks.Any(
kw => kw.Keyword.Valuex.Equals(filter.Keyword)));
}
if (filter.YearPubMin > 0)
{
predicate.Or(w => w.YearPub >= filter.YearPubMin);
}
if (filter.YearPubMax > 0)
{
predicate.Or(w => w.YearPub <= filter.YearPubMax);
}
works = works.AsExpandable().Where(predicate);
}
else
{
// key
if (!string.IsNullOrEmpty(filter.Key))
{
works = works.Where(w => w.Key == filter.Key);
}
// type
if (!string.IsNullOrEmpty(filter.Type))
{
works = works.Where(w => w.Type.Name == filter.Type);
}
// author ID
if (filter.AuthorId != Guid.Empty)
{
works = works.Where(w => w.AuthorWorks.Any(
aw => aw.AuthorId == filter.AuthorId));
}
// last
if (!string.IsNullOrEmpty(filter.LastName))
{
works = works.Where(w => w.AuthorWorks.Any(
aw => aw.Author.Lastx.Contains(filter.LastName)));
}
// language
if (!string.IsNullOrEmpty(filter.Language))
{
works = works.Where(w => w.Language == filter.Language);
}
// title
if (!string.IsNullOrEmpty(filter.Title))
{
works = works.Where(w => w.Titlex.Contains(filter.Title));
}
// container ID
if (filter.ContainerId != Guid.Empty)
{
works = works.Where(w =>
w.ContainerId.Equals(filter.ContainerId));
}
// keyword
if (!string.IsNullOrEmpty(filter.Keyword))
{
works = works.Where(w => w.KeywordWorks.Any(
kw => kw.Keyword.Valuex.Equals(filter.Keyword)));
}
// yearpubmin
if (filter.YearPubMin > 0)
{
works = works.Where(w => w.YearPub >= filter.YearPubMin);
}
// yearpubmax
if (filter.YearPubMax > 0)
{
works = works.Where(w => w.YearPub <= filter.YearPubMax);
}
}
int tot = works.Count();
// sort and page
works = works
.OrderBy(w => w.AuthorWorks.Select(aw => aw.Author)
.First().Lastx)
.ThenBy(w => w.AuthorWorks.Select(aw => aw.Author)
.First().First)
.ThenBy(w => w.Titlex)
.ThenBy(w => w.Key)
.ThenBy(w => w.Id);
var pgWorks = works.Skip(filter.GetSkipCount())
.Take(filter.PageSize)
.ToList();
return(new DataPage <WorkInfo>(
filter.PageNumber,
filter.PageSize,
tot,
(from w in pgWorks select EfHelper.GetWorkInfo(w, db)).ToList()));
}
}
