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詳細はこちら →DataBind Controls to Salesforce Data Cloud データ in C++Builder
DataBind to Salesforce Data Cloud のデータ in C++Builder with standard components and controls.
最終更新日:2023-06-12The CData ODBC Driver for Salesforce Data Cloud makes it easy to integrate connectivity to live Salesforce Data Cloud 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 Salesforce Data Cloud 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 Salesforce Data Cloud 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.
Salesforce Data Cloud は、OAuth 標準による認証をサポートしています。
OAuth
AuthScheme をOAuth に設定します。
デスクトップアプリケーション
CData は、デスクトップでの認証を簡略化する埋め込みOAuth アプリケーションを提供します。
また、Salesforce Data Cloud コンソールで設定および登録するカスタムOAuth アプリケーションを介してデスクトップから認証することもできます。詳しくは、ヘルプドキュメントのカスタムOAuth アプリの作成を参照してください。
接続する前に、次のプロパティを設定します。
- InitiateOAuth:GETANDREFRESH。InitiateOAuth を使えば、繰り返しOAuth の交換を行ったり、手動でOAuthAccessToken を設定する必要はなくなります。
- OAuthClientId (カスタムアプリケーションのみ):カスタムOAuth アプリケーションの登録時に割り当てられたクライアントID。
- OAuthClientSecret (カスタムアプリケーションのみ):カスタムOAuth アプリケーションの登録時に割り当てられたクライアントシークレット。
接続すると、本製品 はデフォルトブラウザでSalesforce Data Cloud のOAuth エンドポイントを開きます。ログインして、アプリケーションにアクセス許可を与えます。
以下のようにドライバーがOAuth プロセスを完了します。
- コールバックURL からアクセストークンを取得します。
- 古いトークンの期限が切れたときは、新しいアクセストークンを取得します。
- OAuthSettingsLocation にOAuth 値を保存し、接続間で永続化します。
- 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 Salesforce Data Cloud.
-
Drop a TFDConnection component onto the form and set the following properties:
- ConnectionDefName: Select the FireDAC connection to Salesforce Data Cloud.
- 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 [Account ID], [Account Name] FROM Account WHERE EmployeeCount > 250
- 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.
Web アプリケーションやヘッドレスマシンを含むその他のOAuth メソッドについては、ヘルプドキュメントを参照してください。
You can then follow the steps below to use the Data Explorer to create a FireDAC connection to Salesforce Data Cloud.

Create VCL Applications with Connectivity to Salesforce Data Cloud データ
Follow the procedure below to start querying Salesforce Data Cloud のデータ from a simple VCL application that displays the results of a query in a grid.

Execute Commands to Salesforce Data Cloud with FireDAC Components
You can use the TFDConnection and TFQuery components to execute queries to Salesforce Data Cloud のデータ. This section provides salesforcedcspecific examples of executing queries with the TFQuery component.
Connect to Salesforce Data Cloud 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 Salesforce Data Cloud ODBC Source";
FDConnection1->Connected = true;
To connect the TFDQuery component to Salesforce Data Cloud 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 Account where employeecount = :EmployeeCount";
FDQuery1->ParamByName("employeecount")->AsString = "250";
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 Account where employeecount = :EmployeeCount";
FDQuery1.ParamByName("employeecount")->AsString = "250";
FDQuery1->Open();
Related Articles
Below you can find other articles for using the CData ODBC Driver with RAD Studio, Delphi, and C++ Builder.