Connect to Avro Data from PowerBuilder

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Avro ODBC Driver

Avro ODBC Driver は、ODBC 接続をサポートする任意のアプリケーションからAvro のリアルタイムなデータに直接接続できるパワフルなツールです。

標準ODBC Driver インターフェースを使い、データベース感覚でAvro データにアクセスして読み込みができます。



This article demonstrates how to use the CData ODBC Driver for Avro to connect to Avro data and execute queries in PowerBuilder.

The CData ODBC Driver for Avro can be used from any platform or development technology that supports ODBC, including Sybase PowerBuilder. This article shows how to connect to Avro data and execute queries from the Database Painter and controls such as the DataWindow.

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Create a Profile for the ODBC Driver for Avro

Follow the steps below to use the Database Painter tool to create a database profile based on an ODBC DSN (data source name) for Avro. In the Database Painter, you can use wizards and the UI to work with Avro data.

  1. If you have not already done so, create an ODBC DSN for Avro. The DSN contains the connection properties required to connect to Avro data. You can use the Microsoft ODBC Data Source Administrator to create and configure DSNs. This is the last step of installing the driver. Required connection properties are the following:
    • URI
    Connect to your local Avro file(s) by setting the URI connection property to the location of the Avro file. See the help documentation for a guide to creating a Avro DSN.
  2. In PowerBuilder, click Tools -> Database Painter.
  3. In the Objects window in the Database Painter, right-click the ODBC node and click New Profile.
  4. On the Connection tab, enter a name for the profile and select the Avro DSN in the Data Source menu.
  5. To view and modify a table, right-click a table and then click Edit Data -> Grid.

Using Avro Data with PowerBuilder Controls

You can use standard PowerBuilder objects to connect to ODBC data sources and execute queries. The following example shows how to retrieve Avro data into a DataWindow. You can add the following code to the open method:

SQLCA.DBMS = "ODBC" SQLCA.DBParm = "ConnectString='DSN=CData Avro Source'" CONNECT USING SQLCA; dw_sampletable_1.SetTransObject(SQLCA); dw_sampletable_1.Retrieve();