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How to view Hive データ in RAD Studio Data Explorer using the CData ODBC Driver for Hive.
最終更新日:2023-06-12Embarcadero RAD Studio provides a development environment for Delphi and C++Builder applications. With the CData ODBC Driver for Hive, you gain access to live Hive データ within RAD Studio, abstracting the data into tables, views, and stored procedures that can be used to both retrieve and update Hive データ. This article will walk through connecting to Hive using the Data Explorer.
Configure a Connection to Hive
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.
Apache Hive への接続を確立するには以下を指定します。
- Server:HiveServer2 をホストするサーバーのホスト名またはIP アドレスに設定。
- Port:HiveServer2 インスタンスへの接続用のポートに設定。
- TransportMode:Hive サーバーとの通信に使用するトランスポートモード。有効な入力値は、BINARY およびHTTP です。デフォルトではBINARY が選択されます。
- AuthScheme:使用される認証スキーム。有効な入力値はPLAIN、LDAP、NOSASL、およびKERBEROS です。デフォルトではPLAIN が選択されます。
- CData 製品においてTLS/SSL を有効化するには、UseSSL をTrue に設定します
Connecting to Hive データ Using Data Explorer
You can create a simple application for displaying Hive データ by utilizing the CData FireDAC Components for Hive 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 Hive.
- Back in the Data Explorer, expand the tables for the connection.
Create a new VCL Forms application and drag a table (for example: Customers) onto the form.
- Select the CustomersTable 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 Customers data.
Related Articles
Below you can find other articles for using the CData ODBC Driver with RAD Studio, Delphi, and C++ Builder.