public static IQueryable <TActivatedEntity> GetActiveEntities <TActivatedEntity>(this IPersistentService persistentService)
where TActivatedEntity : class, IEntity, IActivatedEntity, new()
{
CheckHelper.ArgumentNotNull(persistentService, "persistentService");
return
(persistentService
.GetEntitySet <TActivatedEntity>()
.Where(e => e.Active));
}
public static void Add <TEntity>(this IPersistentService persistentService, TEntity entity)
where TEntity : class, IEntity, new()
{
CheckHelper.ArgumentNotNull(persistentService, "persistentService");
CheckHelper.ArgumentNotNull(entity, "entity");
persistentService
.GetEntitySet <TEntity>()
.Add(entity);
}
public static TEntity GetEntityById <TEntity>(this IPersistentService persistentService, int id)
where TEntity : class, IEntity, new()
{
CheckHelper.ArgumentNotNull(persistentService, "persistentService");
CheckHelper.ArgumentWithinCondition(id > 0, "id > 0");
return
(persistentService
.GetEntitySet <TEntity>()
.SingleOrDefault(e => e.Id == id));
}
private static void SetIds <TEntity>(IPersistentService persistentService)
where TEntity : class, IEntity, new()
{
var entities = persistentService.GetEntitySet <TEntity>().ToArray();
var newEntities = entities.Where(e => e.IsNew()).ToArray();
if (newEntities.Any())
{
var maxId = entities.Max(e => e.Id);
foreach (var newEntity in newEntities)
{
newEntity.Id = ++maxId;
}
}
}