public TEntity Get(Expression <Func <TEntity, bool> > filter)
{
using (ReCapContext context = new ReCapContext())
{
return(context.Set <TEntity>().SingleOrDefault(filter));
}
}
public List <TEntity> GetAll(Expression <Func <TEntity, bool> > filter = null)
{
using (ReCapContext context = new ReCapContext())
{
return(filter == null?context.Set <TEntity>().ToList() : context.Set <TEntity>().Where(filter).ToList());
}
}
public void Update(TEntity entity)
{
using (ReCapContext context = new ReCapContext())
{
var updatedEntity = context.Entry(entity);
updatedEntity.State = EntityState.Modified;
context.SaveChanges();
}
}
public bool IsCarAvailable(int carId)
{
using (ReCapContext context = new ReCapContext())
{
var result = from r in context.Rentals
where r.CarId == carId && r.ReturnDate == null
select r;
return((result.Count() == 0) ? true : false);
}
}