我明白,EF 5会自动缓存查询,但是它是根据上下文还是整体来做？我们正在使用MVC,并且使用block封装调用以处理dbcontext.例如：
public class Employee
{
public string FirstName {get; set;}
public string LastName {get; set;}
public int ID {get; set;}
}
public class EmployeeQueryByFirstName : IQueryObject<Employee>
{
private string _firstName;
public void Set(string FirstName)
{
_firstName = FirstName;
}
public Expression<Func<Employee,bool>> AsExpression()
{
return (e=>e.FirstName == this._firstName);
}
}
public class RepoExcerpt
{
public TEntity Find<TEntity>(IQueryObject<TEntity> queryObject)
where TEntity : class
{
using (var conn = ServiceLocator.IOC.Resolve<IDbContext>())
{
var query = (from q in conn.Set<TEntity>()
select q);
query = query.Where(queryObject.AsExpression());
return query.FirstOrDefault();
}
}
}
下一次我们在存储库中调用Find,EF 5会有这个查询的缓存版本,还是会消失,因为我们将得到一个新的dbcontext？如果我想要缓存查询,我需要处理吗？
