Connect to Google Data Catalog Data in RapidMiner

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

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

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

1. Add a new database driver for Google 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:googledatacatalog:
4. Enter the path to the cdata.jdbc.googledatacatalog.jar file, located in the lib subfolder of the installation directory.
5. Enter the driver class: cdata.jdbc.googledatacatalog.GoogleDataCatalogDriver
6. Create a new Google Data Catalog connection: Click Connections -> Manage Database Connections.
7. Enter a name for your connection.
8. For Database System, select the Google Data Catalog driver you configured previously.
9. Enter your connection string in the Host box.

   Google Data Catalog uses the OAuth authentication standard. Authorize access to Google APIs on behalf on individual users or on behalf of users in a domain.

   Before connecting, specify the following to identify the organization and project you would like to connect to:

   • OrganizationId: The ID associated with the Google Cloud Platform organization resource you would like to connect to. Find this by navigating to the cloud console.

     Click the project selection drop-down, and select your organization from the list. Then, click More -> Settings. The organization ID is displayed on this page.

   • ProjectId: The ID associated with the Google Cloud Platform project resource you would like to connect to.

     Find this by navigating to the cloud console dashboard and selecting your project from the Select from drop-down. The project ID will be present in the Project info card.

   When you connect, the OAuth endpoint opens in your default browser. Log in and grant permissions to the application to completes the OAuth process. 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 Google Data Catalog JDBC Driver. Either double-click the JAR file or execute the jar file from the command-line.

   java -jar cdata.jdbc.googledatacatalog.jar

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

   A typical connection string is below:

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

You can now use your Google Data Catalog connection with the various RapidMiner operators in your process. To retrieve Google 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 Google Data Catalog data.