Connect to Nuclia Data from a Connection Pool in Jetty

The CData JDBC driver for Nuclia is easy to integrate with Java Web applications. This article shows how to efficiently connect to Nuclia data in Jetty by configuring the driver for connection pooling. You will configure a JNDI resource for Nuclia 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 Nuclia data source at the level of the Web app, in WEB-INF\jetty-env.xml.

   
   <Configure id='nucliademo' class="org.eclipse.jetty.webapp.WebAppContext">
       <New id="nucliademo" class="org.eclipse.jetty.plus.jndi.Resource">
       <Arg><Ref refid="nucliademo"/></Arg>
       <Arg>jdbc/nucliadb</Arg>
       <Arg>
         <New class="cdata.jdbc.api.APIDriver">
           <Set name="url">jdbc:api:</Set>
           <Set name="Profile">C:\profiles\Nuclia.apip</Set>
           <Set name="AuthScheme">APIKey</Set>
           <Set name="APIKey">your_service_account_key</Set>
           <Set name="KbId">your_kb_uuid</Set>
           <Set name="Zone">aws-us-east-2-1</Set>
         </New>
       </Arg>
     </New>
   </Configure>
   

   Using API Key Authentication

   Nuclia uses API key authentication for accessing Knowledge Box data. To obtain an API key:

   1. Log in to the Nuclia Cloud Dashboard at https://nuclia.cloud
   2. Navigate to your Knowledge Box settings
   3. Go to the Service Accounts section
   4. Create a new service account or copy an existing API key

   After obtaining your API key, set the following connection properties:

   • AuthScheme: Set this to APIKey.
   • APIKey: Set this to your Nuclia service account API key.
   • KbId: Set this to your Knowledge Box UUID.
   • Zone: Set this to your Nuclia deployment zone (e.g., aws-us-east-2-1).

   Example Connection String

   Profile=C:\profiles\Nuclia.apip;AuthScheme=APIKey;APIKey=your_service_account_key;KbId=your_kb_uuid;Zone=aws-us-east-2-1;
   

   Connecting to Nuclia

   Once the authentication is configured, you can connect to Nuclia and query data from any of the available tables such as Resources, KnowledgeBox, LabelSets, and ProcessingStatus.

4. Configure the resource in the Web.xml:

   
     jdbc/nucliadb
     javax.sql.DataSource
     Container
   
   

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

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

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.