Connect to Clarifai Data from a Connection Pool in Jetty

The CData JDBC driver for Clarifai is easy to integrate with Java Web applications. This article shows how to efficiently connect to Clarifai data in Jetty by configuring the driver for connection pooling. You will configure a JNDI resource for Clarifai in Jetty.

Configure the JDBC Driver for Salesforce as a JNDI Data Source

Follow the steps below to connect to Salesforce from Jetty.

1. Enable the JNDI module for your Jetty base. The following command enables JNDI from the command-line:

   
   java -jar ../start.jar --add-to-startd=jndi
   

2. Add the CData and license file, located in the lib subfolder of the installation directory, into the lib subfolder of the context path.

3. Declare the resource and its scope. Enter the required connection properties in the resource declaration. This example declares the Clarifai data source at the level of the Web app, in WEB-INF\jetty-env.xml.

   
   
   <Configure id='clarifaidemo' class="org.eclipse.jetty.webapp.WebAppContext">
       <New id="clarifaidemo" class="org.eclipse.jetty.plus.jndi.Resource">
       <Arg><Ref refid="clarifaidemo"/></Arg>
       <Arg>jdbc/clarifaidb</Arg>
       <Arg>
         <New class="cdata.jdbc.api.APIDriver">
           <Set name="url">jdbc:api:</Set>
           <Set name="Profile">C:\profiles\Clarifai.apip</Set>
           <Set name="AuthScheme">APIKey</Set>
           <Set name="ProfileSettings">'APIKey</Set>
         </New>
       </Arg>
     </New>
   </Configure>
   

   Start by setting the Profile connection property to the location of the Clarifai Profile on disk (e.g. C:\profiles\Clarifai.apip). Next, set the ProfileSettings connection property to the connection string for Clarifai (see below).

   Clarifai API Profile Settings

   Clarifai uses Personal Access Tokens (PATs) for authentication. To obtain a PAT:

   1. Log in to your Clarifai account at https://clarifai.com.
   2. Navigate to your profile settings and select Security.
   3. Click Create Personal Access Token.
   4. Select the required scopes and click Create Token.
   5. Copy the generated token (it will only be shown once).

   After obtaining your Personal Access Token, set the following connection properties:

   • AuthScheme: Set this to APIKey.

   Set the following in the ProfileSettings connection property:

   • APIKey: Set this to your Clarifai Personal Access Token (PAT).

4. Configure the resource in the Web.xml:

   
   
     jdbc/clarifaidb
     javax.sql.DataSource
     Container
   
   

5. You can then access Clarifai with a lookup to java:comp/env/jdbc/clarifaidb:

   
   InitialContext ctx = new InitialContext();
   DataSource myclarifai = (DataSource)ctx.lookup("java:comp/env/jdbc/clarifaidb");
   

More Jetty Integration

The steps above show how to configure the driver in a simple connection pooling scenario. For more use cases and information, see the Working with Jetty JNDI chapter in the Jetty documentation.