Viewing OData Services in RAD Studio Data Explorer

How to view OData services in RAD Studio Data Explorer using the CData ODBC Driver for OData.

最終更新日：2023-06-12

Embarcadero RAD Studio provides a development environment for Delphi and C++Builder applications. With the CData ODBC Driver for OData, you gain access to live OData services within RAD Studio, abstracting the data into tables, views, and stored procedures that can be used to both retrieve and update OData services. This article will walk through connecting to OData using the Data Explorer.

Configure a Connection to OData

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.

OData への接続

OData に接続するには、Url を有効なOData サービスルートURI に設定する必要があります。 OData サービスにルートドキュメントがない場合、テーブルとして公開したい特定のエンティティをFeedURL に指定してください。

OData への認証

OData は、以下を経由する認証をサポートします。

HTTP
Kerberos
SharePoint Online
OAuth
Azure AD

HTTP 認証スキーム

HTTP で認証する場合は、次の表に従ってAuthScheme を設定します。

Scheme	AuthScheme	その他の設定
None	None	認証を必要としない場合に使用。
Basic	Basic	User、Password
NTLM	NTLM	User、Password
Digest（サポートされている場合）	Digest	User、Password

その他の認証方法の詳細は、ヘルプドキュメントの「接続の確立」セクションを参照してください。

Connecting to OData Services Using Data Explorer

You can create a simple application for displaying OData services by utilizing the CData FireDAC Components for OData and a new VCL Forms Application:

Open the Data Explorer in RAD Studio and expand FireDAC.
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 OData.
Back in the Data Explorer, expand the tables for the connection.
Create a new VCL Forms application and drag a table (for example: Orders) onto the form.
Select the OrdersTable object on the form and set the Active property to true.
Right-click on the object, bind visually, and link everything (*) to a new control (TStringGrid).
Arrange the TStringGrid on the form and run the application to see the Orders data.