Connect to SingleStore Data in the Denodo Platform

Denodo Platform is a data virtualization product providing a single point of contact for enterprise database data. When paired with the CData JDBC Driver for SingleStore, Denodo users can work with live SingleStore data alongside other enterprise data sources. This article walks through creating a virtual data source for SingleStore in the Denodo Virtual DataPort Administrator.

With built-in optimized data processing, the CData JDBC Driver offers unmatched performance for interacting with live SingleStore data. When you issue complex SQL queries to SingleStore, the driver pushes supported SQL operations, like filters and aggregations, directly to SingleStore and utilizes the embedded SQL engine to process unsupported operations client-side (often SQL functions and JOIN operations). Its built-in dynamic metadata querying allows you to work with and analyze SingleStore data using native data types.

Create the SingleStore Virtual Port

To connect to live SingleStore data from Denodo, you need to copy the JDBC Driver JAR file to the external library directory for Denodo and create a new JDBC Data Source from the Virtual DataPort Administrator tool.

1. Download the CData JDBC Driver for SingleStore installer, unzip the package, and run the JAR file to install the driver.
2. Copy the JAR File (and license file if it exists) from the installation location (typically C:\Program Files\CData\CData JDBC Driver for SingleStore\lib\) to the Denodo external library directory (C:\Denodo\Denodo Platform\lib-external\jdbc-drivers\cdata-singlestore-19).
3. Open the Denodo Virtual DataPort Administrator tool and navigate to the Server Explorer tab.
4. Right-click "admin" and select New -> Data source -> JDBC.
5. Configure the JDBC Connection:
   • Name: your choice, e.g.: singlestore
   • Database adapter: Generic
   • Driver class path: C:\Denodo\Denodo Platform\lib-external\jdbc-drivers\cdata-singlestore-19
   • Driver class: cdata.jdbc.singlestore.SingleStoreDriver

   • Database URI: Set this to a JDBC URL using the necessary connection properties. For example,

     jdbc:singlestore:User=myUser;Password=myPassword;Database=NorthWind;Server=myServer;Port=3306;

     Information on creating the Database URI follows:

     Built-In Connection String Designer

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

     java -jar cdata.jdbc.singlestore.jar

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

     The following connection properties are required in order to connect to data.

     • Server: The host name or IP of the server hosting the SingleStore database.
     • Port: The port of the server hosting the SingleStore database.
     • Database (Optional): The default database to connect to when connecting to the SingleStore Server. If this is not set, tables from all databases will be returned.

     Connect Using Standard Authentication

     To authenticate using standard authentication, set the following:

     • User: The user which will be used to authenticate with the SingleStore server.
     • Password: The password which will be used to authenticate with the SingleStore server.

     Connect Using Integrated Security

     As an alternative to providing the standard username and password, you can set IntegratedSecurity to True to authenticate trusted users to the server via Windows Authentication.

     Connect Using SSL Authentication

     You can leverage SSL authentication to connect to SingleStore data via a secure session. Configure the following connection properties to connect to data:

     • SSLClientCert: Set this to the name of the certificate store for the client certificate. Used in the case of 2-way SSL, where truststore and keystore are kept on both the client and server machines.
     • SSLClientCertPassword: If a client certificate store is password-protected, set this value to the store's password.
     • SSLClientCertSubject: The subject of the TLS/SSL client certificate. Used to locate the certificate in the store.
     • SSLClientCertType: The certificate type of the client store.
     • SSLServerCert: The certificate to be accepted from the server.

     Connect Using SSH Authentication

     Using SSH, you can securely login to a remote machine. To access SingleStore data via SSH, configure the following connection properties:

     • SSHClientCert: Set this to the name of the certificate store for the client certificate.
     • SSHClientCertPassword: If a client certificate store is password-protected, set this value to the store's password.
     • SSHClientCertSubject: The subject of the TLS/SSL client certificate. Used to locate the certificate in the store.
     • SSHClientCertType: The certificate type of the client store.
     • SSHPassword: The password that you use to authenticate with the SSH server.
     • SSHPort: The port used for SSH operations.
     • SSHServer: The SSH authentication server you are trying to authenticate against.
     • SSHServerFingerPrint: The SSH Server fingerprint used for verification of the host you are connecting to.
     • SSHUser: Set this to the username that you use to authenticate with the SSH server.
6. Click the "Test connection" button to confirm the configuration and click Save.

View SingleStore Data in the VirtualPort Administrator Tool

After creating the data source, you can create a base view of SingleStore data for use in the Denodo Platform.

1. Click the "Create base view" button in the newly created VirtualPort (admin.SingleStore).
2. Expand the object tree and select the objects (tables) you wish to import.
3. Click the "Create selected" button to create views of the SingleStore data.
   Optional: Click "Create associations from foreign keys" to define relationships between the objects.
4. With the view(s) created, navigate to a table (cdata_singlestore_orders) in the Server Explorer and double-click the selected table.
5. In the new tab, click "Execution panel" to open a query panel.
6. Customize the query in the "Execute" tab or use the default:

   SELECT * FROM cdata_singlestore_orders CONTEXT ('i18n'='us_est', 'cache_wait_for_load'='true')
   

7. Click Execute to view the data.

With the base view created, you can now work with live SingleStore data like you would any other data source in Denodo Platform, for example, querying SingleStore in the Denodo Data Catalog.

Download a free, 30-day trial of the CData JDBC Driver for SingleStore and start working with your live SingleStore data in Denodo Platform. Reach out to our Support Team if you have any questions.