public async Task ExecuteAsync(Model.Person person)
{
log.DebugFormat("ExecuteAsync: {0}", person);
using (var context = new Db.ContactBookContext())
{
EntityEntry <DbModel.Person> personEntity =
await context.Persons.AddAsync(new DbModel.Person(person));
await context.SaveChangesAsync();
person.Id = personEntity.Entity.Id;
log.DebugFormat("person inserted with id={0}. Try insert contacts", person.Id);
foreach (Model.Contact c in person.Contacts)
{
EntityEntry <DbModel.Contact> contactEntity =
await context.Contacts.AddAsync(new DbModel.Contact(c));
await context.SaveChangesAsync();
var pc = new DbModel.PersonContact(personEntity.Entity.Id, contactEntity.Entity.Id);
await context.PersonContacts.AddAsync(pc);
}
await context.SaveChangesAsync();
}
log.DebugFormat("Successfully insert {0}", person);
}
public async Task ExecuteAsync(Model.Person person)
{
log.DebugFormat("ExecuteAsync with {0}", person);
using (var context = new Db.ContactBookContext())
{
context.PersonContacts.RemoveRange(context.PersonContacts.Where(x => x.PersonId == person.Id));
await context.SaveChangesAsync();
var contactIds = person.Contacts.Where(c => c.Id.HasValue).Select(x => x.Id.Value).OrderBy(x => x).ToArray();
context.Contacts.RemoveRange(context.Contacts.Where(x => contactIds.Contains(x.Id)));
context.Persons.Remove(new DbModel.Person(person));
await context.SaveChangesAsync();
}
log.DebugFormat("End of execute");
}
public async Task ExecuteAsync(Model.Person person)
{
log.DebugFormat("ExecuteAsync: {0}", person);
using (var context = new Db.ContactBookContext())
{
// update person
context.Persons.Update(new DbModel.Person(person));
// update or remove old contacts
var toDeleteOrUpdateMap = person.Contacts.Where(c => c.Id.HasValue).ToDictionary(x => x.Id.Value);
var dbContactsMap = (from pc in context.PersonContacts
where pc.PersonId == person.Id
select pc.Contact).ToDictionary(x => x.Id);
var toDelete = dbContactsMap.Where(kvp => !toDeleteOrUpdateMap.ContainsKey(kvp.Key));
var toUpdate = toDeleteOrUpdateMap.Where(kvp => dbContactsMap.ContainsKey(kvp.Key))
.ToDictionary(k => k.Key, v => v.Value);
context.PersonContacts.RemoveRange(toDelete.Select(x => new DbModel.PersonContact(person.Id.Value, x.Value.Id)));
await context.SaveChangesAsync(); // because PersonContact contais foreign key
context.Contacts.RemoveRange(toDelete.Select(x => x.Value));
foreach (var v in context.Contacts.Where(c => toUpdate.ContainsKey(c.Id)))
{
context.Entry(v).State = Microsoft.EntityFrameworkCore.EntityState.Detached;
}
context.Contacts.UpdateRange(toUpdate.Select(x => new DbModel.Contact(x.Value)));
// add new contacts
var toAdd = person.Contacts.Where(c => !c.Id.HasValue).Select(c => new DbModel.Contact(c));
foreach (DbModel.Contact newContact in toAdd)
{
EntityEntry <DbModel.Contact> newContactEntity = await context.Contacts.AddAsync(newContact);
await context.SaveChangesAsync();
await context.PersonContacts.AddAsync(new DbModel.PersonContact(person.Id.Value, newContactEntity.Entity.Id));
}
await context.SaveChangesAsync();
}
log.DebugFormat("end of execute");
}