.net之工作流工程展示及代码分享（二）工作流引擎

在介绍完表单类的时候，接下来介绍工作流引擎，主要由四个类组成，分别是流程、流程步骤、流程实例、流程步骤实例类。

流程类：

 1     [Serializable]

 2     public class Flow

 3     {

 4         [XmlAttribute]

 5         public Guid FlowId { get; set; }

 6         [XmlAttribute]

 7         public string FlowName { get; set; }

 8         public List<FlowStep> FlowSteps { get; set; }

 9         [XmlAttribute]

10         public string FlowCategory { get; set; }

11         [XmlAttribute]

12         public bool Enabled { get; set; }

13         [XmlAttribute]

14         public DateTime CreateDate { get; set; }

15         public Person Creator { get; set; }

16         

17         public DateTime? CanRequestDateStart { get; set; }

18         

19         public DateTime? CanRequestDateEnd { get; set; }

20 

21         public string CreaterName

22         {

23             get

24             {

25                 if(Creator!=null)

26                 return Creator.PersonName;

27                 return string.Empty;

28             }

29         }

30         [XmlAttribute]

31         public Guid FormId { get; set; }

32         [XmlAttribute]

33         public string FormName { get; set; }

34         public WorkflowConstant.AccessMode AccessMode { get; set; }

35         [XmlAttribute]

36         public short PeriodTime { get; set; }

37         [XmlAttribute]

38         public string RequestRights { get; set; }

39         [XmlAttribute]

40         public string RequestGroup { get; set; }

41         public string AccessModeDesc

42         {

43             get

44             {

45                 switch (RequestRights)

46                 {

47                     case "-不限-":

48                         return "所有人";

49                     default:

50                         return RequestRights+": ";

51                 }

52             }

53         }

54 

55         [XmlAttribute]

56         public string RoleGroups {

57             get

58             {

59                 if (!string.IsNullOrEmpty(RequestGroup))

60                 {

61                     return string.Join("、", RequestGroup.Split(',').Select(g => g.Split('|')[0]));

62                 }

63                 else

64                 {

65                     return string.Empty;

66                 }

67             } 

68         }

69     }

View Code

流程步骤类：

 1     [Serializable]

 2     public class FlowStep

 3     {

 4         [XmlAttribute]

 5         public Guid StepId { get; set; }

 6         [XmlAttribute]

 7         public Guid PreviousStepId { get; set; }

 8         [XmlAttribute]

 9         public Guid NextStepId { get; set; }

10         [XmlAttribute]

11         public int SequenceId { get; set; }

12         [XmlAttribute]

13         public string StepName { get; set; }

14         [XmlAttribute]

15         public string RightGroupTitle { get; set; }

16         public List<Guid> CanWriteFormContolIds { get; set; }

17         [XmlAttribute]

18         public bool CanReturnToPreviousStep { get; set; }

19         [XmlAttribute]

20         public bool CanReturnToFirstStep { get; set; }

21         [XmlAttribute]

22         public bool AllowSelectAuditor { get; set; }

23         public WorkflowConstant.CounterSignatureMode CounterSignatureMode { get; set; }

24         [XmlAttribute]

25         public bool IsStartStep { get; set; }

26         [XmlAttribute]

27         public bool IsLastStep { get; set; }

28         [XmlAttribute]

29         public bool CanUploadFile { get; set; }

30         [XmlAttribute]

31         public bool MustUploadFile { get; set; }

32         [XmlAttribute]

33         public int UploadFileCount { get; set; }

34     }

View Code

流程实例类：

 1    [Serializable]

 2     public class FlowInstance

 3     {

 4         [XmlAttribute]

 5         public Guid FlowInstantId { get; set; }

 6         public Flow Flow { get; set; }

 7         

 8         public List<FlowInstanceStep> FlowStepInstances { get; set; } 

 9         public Person Creator { get; set; }

10         [XmlAttribute]

11         public DateTime CreateDate { get; set; }

12         [XmlAttribute]

13         public DateTime LastDealDate { get; set; }

14         [XmlAttribute]

15         public WorkflowConstant.SignatureStatus FlowStatus { get; set; }

16 

17         public string FlowStatusName

18         {

19             get

20             {

21                 switch (FlowStatus)

22                 {

23                     case WorkflowConstant.SignatureStatus.Start:

24                         return "进行中";

25                         break;

26                     case WorkflowConstant.SignatureStatus.Undeal:

27                         return "未处理";

28                         break;

29                     case WorkflowConstant.SignatureStatus.PartialPassed:

30                         return "部分通过";

31                         break;

32                     case WorkflowConstant.SignatureStatus.Passed:

33                         return "通过";

34                         break;

35                     case WorkflowConstant.SignatureStatus.OutDated:

36                         return "过期";

37                         break;

38                     case WorkflowConstant.SignatureStatus.Canceled:

39                         return "取消";

40                         break;

41                     case WorkflowConstant.SignatureStatus.RejectToPreviousStep:

42                         return "退回上一步";

43                         break;

44                     case WorkflowConstant.SignatureStatus.RejectToFirstStep:

45                         return "退回第一步";

46                         break;

47                     case WorkflowConstant.SignatureStatus.Stopped:

48                         return "停止";

49                         break;

50                     case WorkflowConstant.SignatureStatus.Finish:

51                         return "结束";

52                         break;

53                     default:

54                         return string.Empty;

55                 }

56             }

57         }

58 

59         public DateTime? EndDate

60         {

61             get

62             {

63                 if (Flow != null)

64                 {

65                     return CreateDate.AddDays(Flow.PeriodTime);

66                 }

67                 else return null;

68             }

69         }

70 

71         public string CurrentStepDisplayName { get; set; }

72     }

View Code

流程步骤实例类：

 1     [Serializable]

 2     public class FlowInstanceStep

 3     {

 4         [XmlAttribute]

 5         public Guid StepInstanceId { get; set; }

 6         public List<WorkflowPersonSignature> PersonSignatures { get; set; }

 7 

 8         public SerializableDictionary<Guid, string> WriteValues { get; set; }

 9        

10         public FlowStep FlowStep { get; set; }

11         [XmlAttribute]

12         public DateTime CreateDate { get; set; }

13         [XmlAttribute]

14         public DateTime ProcessDate { get; set; }

15         [XmlAttribute]

16         public WorkflowConstant.SignatureStatus StepStatus { get; set; }

17         public List<AttachFile> FileList { get; set; } 

18     }

View Code

 

这几个类使用了“贫血模型” 

设定好流程和步骤，以后每次建立的流程实例都是从流程获取到的。

 

本系列导航：

1. .net之工作流工程展示及代码分享（预告）
2. .net之工作流工程展示及代码分享（一）工作流表单
3. .net之工作流工程展示及代码分享（二）工作流引擎
4. .net之工作流工程展示及代码分享（三）数据存储引擎
5. .net之工作流工程展示及代码分享（四）主控制类
6. .net之工作流工程展示及代码分享（五）前端交互