各製品の資料を入手。
詳細はこちら →
製品をチェック
DataBind Controls to SAP Ariba Source データ in C++Builder
DataBind to SAP Ariba Source のデータ in C++Builder with standard components and controls.
最終更新日：2023-06-12The CData ODBC Driver for SAP Ariba Source makes it easy to integrate connectivity to live SAP Ariba Source のデータ with standard data access components in C++Builder. This article shows how to create a simple visual component library (VCL) application in C++Builder that connects to SAP Ariba Source のデータ, executes queries, and displays the results in a grid. An additional section shows how to use FireDAC components to execute commands from code.
Create a Connection to SAP Ariba Source データ
If you have not already, first specify connection properties in an ODBC DSN (data source name). This is the last step of the driver installation. You can use the Microsoft ODBC Data Source Administrator to create and configure ODBC DSNs.
SAP Ariba Source に接続するには、以下を設定します。
- API：本製品にSAP Ariba データを取得させたいAPI を指定。ビジネスロールに基づき、Supplier、Sourcing Project Management、またはContract API を選択します（可能な値は、SupplierDataAPIWithPaginationV4、SourcingProjectManagementAPIV2、または ContractAPIV1 です）。
- DataCenter：アカウントのデータがホストされているデータセンター。
- Realm：アクセスしたいサイト名。
- Environment：テスト環境、または本番環境のいずれかに指定。（可能な値は、TEST またはPRODUCTION）。
Supplier Data API またはContract API に接続する場合は、さらに以下を設定します。
- User：API 呼び出しを行うユーザーのId。
- PasswordAdapter：認証するUser に関連付けられたパスワード。
Supplier API に接続している場合は、ProjectId をデータを取得したいソーシングプロジェクトのId に設定します。
OAuth 認証
接続プロパティを設定した後、認証のためにOAuth 接続を設定する必要があります。
- AuthScheme をOAuthClient に設定します。
- サービスにアプリケーションを登録し、APIKey、OAuthClientId、およびOAuthClientSecret を取得する必要があります。
OAuth アプリケーションの作成について、詳しくはヘルプドキュメントを参照してください。
OAuth の自動リフレッシュ
以下を設定して、接続してください。
- APIKey：アプリケーション設定のApplication key。
- OAuthClientId：アプリケーション設定のOAuth Client Id。
- OAuthClientSecret：アプリケーション設定のOAuth Secret。
接続すると、本製品は自動でOAuth プロセスを完了します。
- 本製品はSAP Ariba からアクセストークンを取得し、それを使ってデータをリクエストします。
- 本製品はアクセストークンの期限が切れると自動的にリフレッシュします。
- OAuth 値はOAuthSettingsLocation で指定された場所に基づいてメモリに保存されます。
You can then follow the steps below to use the Data Explorer to create a FireDAC connection to SAP Ariba Source.
- In a new VCL Forms application, expand the FireDAC node in the Data Explorer.
- Right-click the ODBC Data Source node in the Data Explorer.
- Click Add New Connection.
- Enter a name for the connection.
- In the FireDAC Connection Editor that appears, set the DataSource property to the name of the ODBC DSN for SAP Ariba Source.
Create VCL Applications with Connectivity to SAP Ariba Source データ
Follow the procedure below to start querying SAP Ariba Source のデータ from a simple VCL application that displays the results of a query in a grid.
-
Drop a TFDConnection component onto the form and set the following properties:
- ConnectionDefName: Select the FireDAC connection to SAP Ariba Source.
- Connected: Select True from the menu and, in the dialog that appears, enter your credentials.
-
Drop a TFDQuery component onto the form and set the properties below:
- Connection: Set this property to the TFDConnection component, if this component is not already specified.
SQL: Click the button in the SQL property and enter a query. For example:
SELECT SMVendorID, Category FROM Vendors WHERE Region = 'USA'- Active: Set this property to true.
Drop a TDataSource component onto the form and set the following property:
- DataSet: In the menu for this property, select the name of the TFDQuery component.
-
Drop a TDBGrid control onto the form and set the following property:
- DataSource: Select the name of the TDataSource.
- Drop a TFDGUIxWaitCursor onto the form — this is required to avoid a run-time error.
Execute Commands to SAP Ariba Source with FireDAC Components
You can use the TFDConnection and TFQuery components to execute queries to SAP Ariba Source のデータ. This section provides saparibasourcespecific examples of executing queries with the TFQuery component.
Connect to SAP Ariba Source データ
To connect to the data source, set the Connected property of the TFDConnection component to true. You can set the same properties from code:
FDConnection1->ConnectionDefName = "CData SAP Ariba Source ODBC Source";
FDConnection1->Connected = true;
To connect the TFDQuery component to SAP Ariba Source のデータ, set the Connection property of the component. When a TFDQuery component is added at design time, its Connection property is automatically set to point to a TFDConnection on the form, as in the application above.
Create Parameterized Queries
To create a parameterized query, use the following syntax below:
FDQuery1->SQL->Text = "select * from Vendors where region = :Region";
FDQuery1->ParamByName("region")->AsString = "USA";
query->Open();
The example above binds a string-type input parameter by name and then opens the dataset that results.
Prepare the Statement
Preparing statements is costly in system resources and time. The connection must be active and open while a statement is prepared. By default, FireDAC prepares the query to avoid recompiling the same query over and over. To disable statement preparation, set ResourceOptions.DirectExecute to True; for example, when you need to execute a query only once.
Execute a Query
To execute a query that returns a result set, such as a select query, use the Open method. The Open method executes the query, returns the result set, and opens it. The Open method will return an error if the query does not produce a result set.
FDQuery1->SQL->Text := "select * from Vendors where region = :Region";
FDQuery1.ParamByName("region")->AsString = "USA";
FDQuery1->Open();
To execute a query that does not return a result set, use the ExecSQL method. The ExecSQL method will return an error if the query returns a result set. To retrieve the count of affected rows use the TFD.RowsAffected property.
FDQ.SQL.Text := "delete from Vendors where Id = :Id";
FDQuery1->Params->Items[0]->AsString = "x12345";
FDQuery1->ExecSQL();
AnsiString i = FDQuery1->RowsAffected;
Related Articles
Below you can find other articles for using the CData ODBC Driver with RAD Studio, Delphi, and C++ Builder.
関連コンテンツ
