public virtual void Delete(params T[] items)
{
using (var context = new ContextPostgres())
{
foreach (T item in items)
{
context.Entry(item).State = EntityState.Deleted;
}
context.SaveChanges();
}
}
public virtual IList <T> GetAll(params Expression <Func <T, object> >[] navigationProperties)
{
List <T> list;
using (var context = new ContextPostgres())
{
IQueryable <T> dbQuery = context.Set <T>();
//Применяем жадную загрузку
foreach (Expression <Func <T, object> > navigationProperty in navigationProperties)
{
dbQuery = dbQuery.Include <T, object>(navigationProperty);
}
list = dbQuery
.AsNoTracking()
.ToList <T>();
}
return(list);
}
public virtual T Get(Func <T, bool> where,
params Expression <Func <T, object> >[] navigationProperties)
{
T item = null;
using (var context = new ContextPostgres())
{
IQueryable <T> dbQuery = context.Set <T>();
//Apply eager loading
foreach (Expression <Func <T, object> > navigationProperty in navigationProperties)
{
dbQuery = dbQuery.Include <T, object>(navigationProperty);
}
item = dbQuery
.AsNoTracking() //Don't track any changes for the selected item
.FirstOrDefault(where); //Apply where clause
}
return(item);
}