Enterprise Solution 管理软件开发框架流程实战

1 定义模块和功能

执行系统功能(SAUTSF)，在系统主文件(System Master File SAMF)模块中增加功能SAMFEM，Employee Master。

给有权限的用户组分配功能SAMFEM的权限，包含新增，删除，修改，打印，过帐权限，这是功能权限。

如果需要增加字段权限，比如可以编辑员工薪资字段，应该修改用户表(User)增加权限字段。

2 定义导航菜单

把增加的功能放置到合适的功能菜单中，菜单项的位置根据需要而定。比如员工主文件，可以放置到主档定义中，还可以放置一份到人事管理的设定菜单项中。定义一个菜单项位置，系统会生成三个地方的导航菜单项：标题栏下的主菜单(ToolStrip)， 导航树右边的列表视图(ListView)，导航图的上下文菜单(ContextMenu)，三种方式帮助用户快速查找与执行功能。

3 设计数据库表

以员工表为例子，员工表的数据库脚本如下：

CREATE TABLE [dbo].[Employee]
(
[Recnum] [numeric] (18, 0) NOT NULL IDENTITY(1, 1),
[EmployeeNo] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[Department] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[ProductionGroup] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[CompanyCode] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[BranchCode] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[Name] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[Account] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[Password] [nvarchar] (100) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[Gender] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[Birthday] [datetime] NULL,
[Mobile] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[Address] [nvarchar] (100) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[HomeTelephone] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[Post] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[Type] [char] (4) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[Suspended] [char] (1) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL CONSTRAINT [DF__tEmployee__Enabl__32CB82C6] DEFAULT ((1)),
[JobTitle] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[JoinDate] [datetime] NULL,
[LeftDate] [datetime] NULL,
[Photo] [image] NULL
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
GO
ALTER TABLE [dbo].[Employee] WITH NOCHECK ADD CONSTRAINT [CKC_TYPE_TEMPLOYE] CHECK (([Type]=(1) OR [Type]=(0)))
GO
ALTER TABLE [dbo].[Employee] ADD CONSTRAINT [PK_TEMPLOYEE] PRIMARY KEY CLUSTERED  ([EmployeeNo]) ON [PRIMARY]
GO
ALTER TABLE [dbo].[Employee] WITH NOCHECK ADD CONSTRAINT [FK_Employee_Department] FOREIGN KEY ([Department]) REFERENCES [dbo].[Department] ([DepartmentCode])
GO
ALTER TABLE [dbo].[Employee] NOCHECK CONSTRAINT [FK_Employee_Department]
GO

4 LLBL Gen Pro生成实体映射

执行程序LLBL Gen Pro，连接到数据库并添加Employee数据表，最后点击生成源代码文件。

一般情况下用默认的命名规则即可。比如Item_No映射的实体字段名是ItemNo，默认去掉下划线。

5 实体数据访问接口与实现生成

用Template目录中的Code Smith模板生成接口与实现类，代码如下：

数据接口类：

public interface IEmployeeManager
    {
        EmployeeEntity GetEmployee(System.String EmpNo);
        EmployeeEntity GetEmployee(System.String EmpNo, IPrefetchPath2 prefetchPath);
        EmployeeEntity GetEmployee(System.String EmpNo, IPrefetchPath2 prefetchPath, ExcludeIncludeFieldsList fieldList);

        EntityCollection GetEmployeeCollection(IRelationPredicateBucket filterBucket);
        EntityCollection GetEmployeeCollection(IRelationPredicateBucket filterBucket, ISortExpression sortExpression);
        EntityCollection GetEmployeeCollection(IRelationPredicateBucket filterBucket, ISortExpression sortExpression, IPrefetchPath2 prefetchPath);
        EntityCollection GetEmployeeCollection(IRelationPredicateBucket filterBucket, ISortExpression sortExpression, IPrefetchPath2 prefetchPath, ExcludeIncludeFieldsList fieldList);

        EmployeeEntity SaveEmployee(EmployeeEntity employee);
        EmployeeEntity SaveEmployee(EmployeeEntity employee, EntityCollection entitiesToDelete);
        EmployeeEntity SaveEmployee(EmployeeEntity employee, EntityCollection entitiesToDelete, string seriesCode);

        void DeleteEmployee(EmployeeEntity employee);

        bool IsEmployeeExist(System.String EmpNo);
        bool IsEmployeeExist(IRelationPredicateBucket filterBucket);
        int GetEmployeeCount(IRelationPredicateBucket filterBucket);

        EmployeeEntity CloneEmployee(System.String EmpNo);
        void PostEmployee(System.String EmpNo);
        void PostEmployee(EmployeeEntity employee);
    }

数据实现类：

[RemoteService("EmployeeManager")]
public class EmployeeManager : Foundation.Common.ManagerBase, IEmployeeManager
{
        public EmployeeEntity GetEmployee(System.String EmpNo)
        {
            IPrefetchPath2 prefetchPath = new PrefetchPath2((int)EntityType.EmployeeEntity);
            prefetchPath.Add(EmployeeEntity.PrefetchPathEmployeeTrainings);
            return GetEmployee(EmpNo, prefetchPath);
        }

        public EmployeeEntity GetEmployee(System.String EmpNo, IPrefetchPath2 prefetchPath)
        {
            return GetEmployee(EmpNo, prefetchPath, null);
        }

        public EmployeeEntity GetEmployee(System.String EmpNo, IPrefetchPath2 prefetchPath, ExcludeIncludeFieldsList fieldList)
        {
            EmployeeEntity employee = new EmployeeEntity(EmpNo);
            using (DataAccessAdapterBase adapter = GetCompanyDataAccessAdapter())
            {
                bool found = adapter.FetchEntity(employee, prefetchPath, null, fieldList);
                if (!found) throw new Foundation.Common.RecordNotFoundException("Invalid Employee");
            }
            return employee;
        }

        public EntityCollection GetEmployeeCollection(IRelationPredicateBucket filterBucket)
        {
            return GetEmployeeCollection(filterBucket, null);
        }

        public EntityCollection GetEmployeeCollection(IRelationPredicateBucket filterBucket, ISortExpression sortExpression)
        {
            return GetEmployeeCollection(filterBucket, sortExpression, null);
        }

        public EntityCollection GetEmployeeCollection(IRelationPredicateBucket filterBucket, ISortExpression sortExpression, IPrefetchPath2 prefetchPath)
        {
            return GetEmployeeCollection(filterBucket, sortExpression, prefetchPath, null);
        }

        public EntityCollection GetEmployeeCollection(IRelationPredicateBucket filterBucket, ISortExpression sortExpression, IPrefetchPath2 prefetchPath, ExcludeIncludeFieldsList fieldList)
        {
            EntityCollection employeeCollection = new EntityCollection(new EmployeeEntityFactory());
            using (DataAccessAdapterBase adapter = GetCompanyDataAccessAdapter())
            {
                adapter.FetchEntityCollection(employeeCollection, filterBucket, 0, sortExpression, prefetchPath, fieldList);
            }
            return employeeCollection;
        }

        public EmployeeEntity SaveEmployee(EmployeeEntity Employee)
        {
            return SaveEmployee(Employee, null);
        }

        public EmployeeEntity SaveEmployee(EmployeeEntity Employee, EntityCollection entitiesToDelete)
        {
            return SaveEmployee(Employee, entitiesToDelete, string.Empty);
        }

        public EmployeeEntity SaveEmployee(EmployeeEntity Employee, EntityCollection entitiesToDelete, string seriesCode)
        {
            using (DataAccessAdapterBase adapter = GetCompanyDataAccessAdapter())
            {
                try
                {
                    adapter.StartTransaction(IsolationLevel.ReadCommitted, "SaveEmployee");
                    adapter.SaveEntity(Employee, true, false);

                    IEmployeeTrainingManager trainingManager = ClientProxyFactory.CreateProxyInstance<IEmployeeTrainingManager>();
                    foreach (var employeeTraining in Employee.EmployeeTrainings)
                    {
                        trainingManager.SaveEmployeeTraining(employeeTraining);
                    }
                    adapter.Commit();
                }
                catch
                {
                    adapter.Rollback();
                    throw;
                }
            }
            return Employee;
        }

        public void DeleteEmployee(EmployeeEntity Employee)
        {
            using (DataAccessAdapterBase adapter = GetCompanyDataAccessAdapter())
            {
                if (!adapter.IsEntityExist<EmployeeEntity>(Employee))
                    return;

                try
                {
                    adapter.StartTransaction(IsolationLevel.ReadCommitted, "DeleteEmployee");
                    IEmployeeTrainingManager trainingManager = ClientProxyFactory.CreateProxyInstance<IEmployeeTrainingManager>();
                    foreach (var employeeTraining in Employee.EmployeeTrainings)
                    {
                        trainingManager.DeleteEmployeeTraining(employeeTraining);
                    }
                    adapter.DeleteEntity(Employee);
                    adapter.Commit();
                }
                catch
                {
                    adapter.Rollback();
                    throw;
                }
            }
        }

        public bool IsEmployeeExist(System.String EmpNo)
        {
            RelationPredicateBucket filterBucket = new RelationPredicateBucket();
            filterBucket.PredicateExpression.Add(EmployeeFields.EmployeeNo == EmpNo);
            return IsEmployeeExist(filterBucket);
        }

        public bool IsEmployeeExist(IRelationPredicateBucket filterBucket)
        {
            return (GetEmployeeCount(filterBucket) > 0);
        }

        public int GetEmployeeCount(IRelationPredicateBucket filterBucket)
        {
            using (DataAccessAdapterBase adapter = GetCompanyDataAccessAdapter())
            {
                return adapter.GetDbCount<EmployeeEntity>(filterBucket);
            }
        }

        public EmployeeEntity CloneEmployee(System.String EmpNo)
        {
            EmployeeEntity source = this.GetEmployee(EmpNo);
            EmployeeEntity employee = (EmployeeEntity)CloneEntity(source);
            return employee;
        }

        public void PostEmployee(System.String EmpNo)
        {
            return;
        }

        public void PostEmployee(EmployeeEntity Employee)
        {
            return;
        }
}

6 界面设计，控件数据绑定，查找与钻取

Windows窗体设计的主要流程步骤

1)  拖一个EntityCollection组件到界面中，这个组件来自于LLBL Gen Pro生成的数据库映射项目。

设置EntityFactoryToUse=Kingston.FactoryClasses.EmployeeEntityFactory。

2)  拖多个BindingSource组件到界面。每一层控件都需要一个BindingSource组件，如果界面是单笔数据操作，还需要拖一个空的BindingSource组件到界面中，并将它设为窗体的NavigatorBindingSource。

3) 依次绑定控件与数据源组件的属性。要注意选对控件，TextEditor,NumbericEditor。对于必须输入值的控件，要设置Required=true，对于映射到主键字段的控件，要设AutoFind=true。

4) 给控件增加查找与钻取。

5) 设置控件的tab index。

7 验证和计算逻辑

1) 增加实体属性的默认值。修改文件EmployeeEntity.Implementation.cs

public partial class EmployeeEntity
{
             protected override void OnInitialized()
             {
             base.OnInitialized();

                  // Assign default value for new entity
             if (Fields.State == EntityState.New)
             {
         #region DefaultValue

         // __LLBLGENPRO_USER_CODE_REGION_START DefaultValue
         this.Fields[(int) EmployeeFieldIndex.Suspended].CurrentValue = false;
         // __LLBLGENPRO_USER_CODE_REGION_END

           #endregion

2) 增加自动带值。比如输入员工所在的部门编码，要自动带入部门名称。

private void OnChangeDepartment(string originalValue)
{
        IDepartmentManager departmentManager =CreateProxyInstance<IDepartmentManager>();
        if (departmentManager.IsDepartmentExist(Department))
        {
              ExcludeIncludeFieldsList fieldList = new ExcludeIncludeFieldsList(false);
              fieldList.Add(DepartmentFields.FullName);
              DepartmentEntity department = departmentManager.GetDepartment(Department, null, fieldList);
              this.DepartmentName = department.FullName;
        }
}

3) 增加验证代码，对需要验证的属性值进行验证。

值验证：

public override bool ValidateFieldValue(IEntityCore involvedEntity, int fieldIndex, object value)
{
            bool result = base.ValidateFieldValue(involvedEntity, fieldIndex, value);

            if (!result) return false;
            switch ((EmployeeFieldIndex)fieldIndex)
            {
                 case EmployeeFieldIndex.Department:
                    return ValidateDepartment((string)value, (EmployeeEntity)involvedEntity);
                    break;

private bool ValidateDepartment(string value, EmployeeEntity EGEntity)
{
       if (!string.IsNullOrWhiteSpace(value))
       {
             IDepartmentManager departmentManager = CreateProxyInstance<IDepartmentManager>();
             departmentManager.ValidateDepartment(value);
       }

       return true;
}

删除验证:

public override void ValidateEntityBeforeDelete(IEntityCore involvedEntity)
{
     base.ValidateEntityBeforeDelete(involvedEntity);
     EmployeeEntity employeeEntity = (EmployeeEntity)involvedEntity;
     ISalesmanManager salesmanManager = CreateProxyInstance<ISalesmanManager>();

     RelationPredicateBucket filterBucket = new RelationPredicateBucket();
     filterBucket.PredicateExpression.Add(SalesmanFields.EmployeeNo == employeeEntity.EmployeeNo);
     if (salesmanManager.IsSalesmanExist(filterBucket))
     {
         throw new FieldValidationException("Employee No. already used in salesman");
     }

保存前验证：

public override void ValidateEntityBeforeSave(IEntityCore involvedEntity)
{
      base.ValidateEntityBeforeSave(involvedEntity);
      EmployeeEntity employeeEntity = (EmployeeEntity)involvedEntity;

      if (string.IsNullOrWhiteSpace(employeeEntity.EmployeeNo))
      {
           throw new EntityValidationException("Employee No. is required");
      }

8 生成并发布程序

打开Visual Studio 2015或用MSBUILD生成程序。

执行.NET Reactor批处理脚本，将生成的文件复制到客户的更新服务器中。