Connect to Azure Data Catalog Data in RapidMiner

This article shows how you can easily integrate the CData JDBC driver for Azure Data Catalog into your processes in RapidMiner. This article uses the CData JDBC Driver for Azure Data Catalog to transfer Azure Data Catalog data to a process in RapidMiner.

Connect to Azure Data Catalog in RapidMiner as a JDBC Data Source

You can follow the procedure below to establish a JDBC connection to Azure Data Catalog:

1. Add a new database driver for Azure Data Catalog: Click Connections -> Manage Database Drivers.
2. In the resulting wizard, click the Add button and enter a name for the connection.
3. Enter the prefix for the JDBC URL: jdbc:azuredatacatalog:
4. Enter the path to the cdata.jdbc.azuredatacatalog.jar file, located in the lib subfolder of the installation directory.
5. Enter the driver class: cdata.jdbc.azuredatacatalog.AzureDataCatalogDriver
6. Create a new Azure Data Catalog connection: Click Connections -> Manage Database Connections.
7. Enter a name for your connection.
8. For Database System, select the Azure Data Catalog driver you configured previously.
9. Enter your connection string in the Host box.

   You can optionally set the following to read the different catalog data returned from Azure Data Catalog.

   CatalogName: Set this to the CatalogName associated with your Azure Data Catalog. To get your Catalog name, navigate to your Azure Portal home page > Data Catalog > Catalog Name

   Connect Using OAuth Authentication

   You must use OAuth to authenticate with Azure Data Catalog. OAuth requires the authenticating user to interact with Azure Data Catalog using the browser. For more information, refer to the OAuth section in the help documentation.

   Built-in Connection String Designer

   For assistance in constructing the JDBC URL, use the connection string designer built into the Azure Data Catalog JDBC Driver. Either double-click the JAR file or execute the jar file from the command-line.

   java -jar cdata.jdbc.azuredatacatalog.jar

   Fill in the connection properties and copy the connection string to the clipboard.

   A typical connection string is below:

   InitiateOAuth=GETANDREFRESH
10. Enter your username and password if necessary.

You can now use your Azure Data Catalog connection with the various RapidMiner operators in your process. To retrieve Azure Data Catalog data, drag the Retrieve operator from the Operators view. With the Retrieve operator selected, you can then define which table to retrieve in the Parameters view by clicking the folder icon next to the "repository entry." In the resulting Repository Browser, you can expand your connection node to select the desired example set.

Finally, wire the output to the Retrieve process to a result, and run the process to see the Azure Data Catalog data.