Connect to Azure Data Catalog Data and Transfer Data in Talend

This article shows how you can easily integrate the CData JDBC driver for Azure Data Catalog into your workflow in Talend. This article uses the CData JDBC Driver for Azure Data Catalog to transfer Azure Data Catalog data in a job flow in Talend.

Connect to Azure Data Catalog in Talend 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 connection to Azure Data Catalog data: To add a new connection, expand the Metadata node, right-click the Db Connections node, and then click Create Connection.
2. In the resulting wizard, enter a name for the connection.

3. On the next page, select Generic JDBC from the DB Type menu and enter the JDBC URL.

   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 JDBC URL is below:

   jdbc:azuredatacatalog:InitiateOAuth=GETANDREFRESH
4. Enter the path to the cdata.jdbc.azuredatacatalog.jar file, located in the lib subfolder of the installation directory.
5. Right-click the connection and then click Retrieve Schema.
6. Click Next with the default options to select the tables you want to import.
7. Finish the wizard with the default options.

Output the Tables Table to a Flat File

You can follow the procedure below to transfer the Tables table to a flat file output component:

1. In the Table Schemas node, drag the tables to the workspace.
2. In the dialog that is displayed, select the tJDBCInput component.
3. Next, drag a tFileOutputDelimited component from the Business Intelligence tab of the Palette into the workspace.
4. Right-click the Tables tJDBCInput component and drag a vector to the output file.

Run the project to transfer the data.