关于sap:一步步使用SAP-C4C-Cloud-Application-Studio创建一个BO和对应的屏幕

关上 SAP C4C Cloud Application Studio，

进入 Solution Explorer，右键菜单里抉择 Add -> New Item:

新建一个 Business Object，取名 CarPark:

源代码如下：

import AP.FO.BusinessPartner.Global;

import AP.Common.GDT as apCommonGDT;

 
businessobject CarPark 
  // *Further Development*
    // declare an error message that is called if the BO fails validation
    // raises Message_Car_Park_Full

  
    {
    
    // Root node must not be specified, it is created implicitly
    //

     // Add elements here.

    //

// To declare an element as alternative key, use the [AlternativeKey] 
// annotation.

//Please note:
   // - An alternative key of type UUID exists implicitly for each node, enabling
   //  the node to be used as an association target.

    // - The QueryByElements query is created automatically for each node.

   // Code completion is available with CTRL + SPACE. 
    // *Further Development*
    // define an error message to be displayed if the BO fails validation

   // message Message_Car_Park_Full text "The car park is full - no spaces available"; 

   
    // Car Park ID - (the company may have multiple car parks)
    // - therefore we use this ID to identify the individual car park
    element CarParkID : ID; 

  
    // additional information on the car park
    element CarParkName : LANGUAGEINDEPENDENT_LONG_Text;

    element CarParkDescription : LANGUAGEINDEPENDENT_LONG_Description;

    element Number_of_ParkingSpaces : IntegerValue;

 
    // *Further Development*
    // add an element to display how many parking spaces are available

    // element Number_of_ParkingSpaces_Available : IntegerValue;

    // declare an action to calculate the available car spaces

    // action Update_AvailableParkingSpaces;
    // *Further Development*
    // add an element to record location information

  // this field is used with a URL mashup to display the location of the car park
     // element CarParkLocation : LANGUAGEINDEPENDENT_MEDIUM_Description; 

     // each car park will have multiple parking spaces

    // we create a node with 0 to n parking spaces

 
    node ParkingSpace [0,n]    {
       // each parking space is assigned a unique identifier
       element ParkingSpaceID : ID;
     
      // display the ID of the Employee assigned to the parking space
      element ParkingSpace_AssignedEmployeeID : ID;

      // a parking space may be designated as a "Disabled Friendly" parking space
      element ParkingSpace_Disabled : Indicator;
     
      // is there an electric charging station for this parking space ?
      element ParkingSpace_ElectricChargeStation : Indicator;
    
      // display the license plate number of the employee's car
       element Vehicle_RegistrationNumber : LANGUAGEINDEPENDENT_MEDIUM_Text;
    
     // for a multi-level car park, we have the possibility to specify a level number
      element ParkingSpace_Level : NumberValue;

       // we need to create an association to the SAP BO "Employee"

      // this allows us to include elements from the Employee BO in our screens

      // a parking space may be associated to at most one employee

      association ToEmployee [0,1] to Employee;
      }
}

激活该 BO，确保 Activation Status 为 Runtime Objects up to date:

BO 激活后，右键菜单抉择 Create Screens：

抉择 Screen Scenario with Thing-Based navigation：

会主动生成很多 SAP Cloud for Customer 屏幕：

双击 QA 关上主动生成的 UI，发现下面曾经有一些来自 BO 低头级别的字段了：

点工具栏上这个 AddFlexLayoutRow 按钮：

呈现一个新的空白行：

将 Toolbox 里的控件 AdvancedListPane 拖到新建的 FlexLayoutRow 里：

选中某一个 column，右键菜单里增加一个新的 column：

当初咱们有了一个表格，蕴含四列：

View 菜单里关上：BO Browser / Data Model，使其显示在屏幕左边：

把 ParkingSpaceID 拖拽到第一列下来：

抉择 No：

从而建设了 UI 字段和 BO 模型字段的绑定关系：

此处查看绑定关系：

显示 employee ID 的字段默认是 input field，须要将其改成 value help：

改成 Object Value Selector：OVS

抉择 /SAP_BYD_APPLICATION_UI/publicovs/employeeid/
EmployeeID: 作为 OVS Component：

把字段：ToEmployee.CurrentCommon.Person.Name.GivenName 拖到第三列：

familyName 拖到第四列：

把 GivenName 的 display type 设置为 Static Text：

左边 properties 下拉菜单里，抉择 AdvancedListPaneVariant: ListPaneVariant：

useToolbar 从 false 改成 true：

设置成 true 之后，多了两个按钮：Add Row 和 Remove.

选中 Add Row 按钮，新建一个 Event handler：

新建一个 operation，类型为 List：

Target List 里，从下拉菜单抉择 /Root/DataList：

给 Remove 按钮也增加一个 event handler：

再增加一个 save action，确保 Row 被删除后主动保留：

选中 identificationRegion:

点击 Advanced：

抉择 CarParkID：

最终成果：

选中 SectionGroup，能够对外面的字段进行地位程序调整：

最初把用户调配到这个新建好的 work center 即可：

当初就能够进行测试了：

更多 Jerry 的原创文章，尽在：” 汪子熙 ”: