Question

我有一个大型对象，需要随时加载所有成员。

rtrn.List = Context.Days
          .Include(x => x.Inspections.Select(y => y.Type))
          .Include(x => x.Inspections.Select(y => y.Subtype))
          .Include(x => x.Inspections.Select(y => y.Inspector))
          .Include(x => x.Inspections.Select(y => y.Approver))
          .Include(x => x.Inspections.Select(y => y.OperatorAddress))
          .Include(x => x.Inspections.Select(y => y.Unit))
          .Include(x => x.Inspections.Select(y => y.RecordsAddress))
          .Include(x => x.Inspections.Select(y => y.InspectionAddress))
          .Include(x => x.Inspections.Select(y => y.People))
          .Include(x => x.Inspections.Select(y => y.CustomFields))
          .Include(x => x.Inspections.Select(y => y.Codelinks.Select(s => s.CodeSections.Select(q => q.Questions.Select(a => a.Answer)))))
          .Include(x => x.Inspections.Select(y => y.Attachments))
          .Include(x => x.Inspections.Select(y => y.Comments))
        .Include(x => x.Inspections.Select(y => y.ComplianceRecords.Select(z => z.Records)))
          .Include(x => x.Inspections.Select(y => y.CorrespondenceRecords))
          .Where(x => x.Inspector.Id == userId).OrderByDescending(x => x.DayDate).Skip(page * perpage).Take(perpage).ToList();

加载需要一段时间，我正在寻找如何加快速度的想法。通过我的研究，我看到了使用.Load()方法而不是包含的建议，所以我尝试了

var rtrn = Context.Days..Where(x => x.Inspector.Id == userId).OrderByDescending(x => x.DayDate).Skip(page * perpage).Take(perpage).ToList();

foreach (Day d in rtrn)
        {
            Context.Entry(d).Collection(x => x.Inspections).Load();
            foreach (Inspection insp in d.Inspections)
            {
                Context.Entry(insp).Reference(x => x.Type).Load();
                Context.Entry(insp).Reference(x => x.Subtype).Load();
                Context.Entry(insp).Reference(x => x.Inspector).Load();
                Context.Entry(insp).Reference(x => x.Approver).Load();
                Context.Entry(insp).Reference(x => x.OperatorAddress).Load();
                Context.Entry(insp).Reference(x => x.Unit).Load();
                Context.Entry(insp).Reference(x => x.RecordsAddress).Load();
                Context.Entry(insp).Reference(x => x.InspectionAddress).Load();
                Context.Entry(insp).Collection(x => x.People).Load();
                Context.Entry(insp).Collection(x => x.CustomFields).Load();
                Context.Entry(insp).Collection(x => x.Codelinks).Load();
                Context.Entry(insp).Collection(x => x.Attachments).Load();
                Context.Entry(insp).Collection(x => x.Comments).Load();
                Context.Entry(insp).Collection(x => x.ComplianceRecords).Load();
                Context.Entry(insp).Collection(x => x.CorrespondenceRecords).Load();

                foreach (CodeLink cl in insp.Codelinks)
                {
                    Context.Entry(cl).Collection(x => x.CodeSections).Load();
                    foreach (CodeSection cs in cl.CodeSections)
                    {
                        Context.Entry(cs).Collection(x => x.Questions).Load();
                        foreach (Question q in cs.Questions)
                            Context.Entry(q).Reference(x => x.Answer).Load();
                    }
                }

                foreach (ComplianceRecordBucket b in insp.ComplianceRecords)
                    Context.Entry(b).Collection(x => x.Records).Load();
            }
        }

根据我的测量结果，这需要大约10倍的时间。不能说我很惊讶，但这让我不知道在哪里解决这个问题。

EF 6 .Include（）优化

0 个答案: