/// <summary>
/// Add Core.Person items to Navigation property of a resource.
/// </summary>
/// <param name="context">ZentityContext to search a person in database</param>
/// <param name="contacts">Navigation property of resource to add persons</param>
/// <param name="authors">List of persons to add to navigation property.</param>
protected static void AddPersons(ZentityContext context, EntityCollection <Contact> contacts, IEnumerable <Person> authors)
{
foreach (Person author in authors)
{
if (!string.IsNullOrEmpty(author.Title))
{
Match nameMatch = Regex.Match(author.Title, AtomPubConstants.PersonNamePattern, RegexOptions.IgnoreCase);
author.FirstName = nameMatch.Groups[AtomPubConstants.FirstName].Value;
author.MiddleName = nameMatch.Groups[AtomPubConstants.MiddleName].Value;
author.LastName = nameMatch.Groups[AtomPubConstants.LastName].Value;
}
System.Linq.Expressions.Expression filter = null;
ParameterExpression param = System.Linq.Expressions.Expression.Parameter(typeof(Person), "person");
if (!string.IsNullOrEmpty(author.Uri))
{
AtomPubHelper.GeneratePersonFilterExpression("Uri", author.Uri, param, ref filter);
}
else if (!string.IsNullOrEmpty(author.Email))
{
AtomPubHelper.GeneratePersonFilterExpression("Email", author.Email, param, ref filter);
}
else
{
AtomPubHelper.GeneratePersonFilterExpression(AtomPubConstants.FirstName, author.FirstName, param, ref filter);
AtomPubHelper.GeneratePersonFilterExpression(AtomPubConstants.MiddleName, author.MiddleName, param, ref filter);
AtomPubHelper.GeneratePersonFilterExpression(AtomPubConstants.LastName, author.LastName, param, ref filter);
}
if (null == filter)
{
continue;
}
Expression <Func <Person, bool> > predicate = System.Linq.Expressions.Expression.Lambda(filter, param) as Expression <Func <Person, bool> >;
Person contact = context.People().FirstOrDefault(predicate);
if (null == contact)
{
contact = author;
}
contacts.Add(contact);
}
}