/// <summary>
/// Projects each product of a sequence into a new form.
/// </summary>
public static IQueryable <MailMessageItem> Select(this IQueryable <ProjectMailMessage> query, MailMessageField fields)
{
Expression <Func <ProjectMailMessage, MailMessageItem> > selector = mailMessage => new MailMessageItem
{
Id = mailMessage.Id,
Subject = mailMessage.Subject,
ModifiedDate = mailMessage.ModifiedDate
};
if (fields.HasFlag(MailMessageField.Project))
{
selector = selector.Merge(mailMessage => new MailMessageItem
{
Project = new UniqueItem {
Id = mailMessage.Project.Id, Name = mailMessage.Project.Name
}
});
}
if (fields.HasFlag(MailMessageField.Body))
{
selector = selector.Merge(mailMessage => new MailMessageItem
{
Body = mailMessage.Body
});
}
return(query.Select(selector));
}