Connect to IBM Cloud Data Engine Data from a Connection Pool in Jetty

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The IBM Cloud Data Engine JDBC Driver supports connection pooling: This article shows how to connect faster to IBM Cloud Data Engine data from Web apps in Jetty.

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

    <Configure id='ibmclouddataenginedemo' class="org.eclipse.jetty.webapp.WebAppContext"> <New id="ibmclouddataenginedemo" class=""> <Arg><Ref refid="ibmclouddataenginedemo"/></Arg> <Arg>jdbc/ibmclouddataenginedb</Arg> <Arg> <New class="cdata.jdbc.ibmclouddataengine.IBMCloudDataEngineDriver"> <Set name="url">jdbc:ibmclouddataengine:</Set> <Set name="Api Key">MyAPIKey</Set> <Set name="Instance CRN">myInstanceCRN</Set> <Set name="Region">myRegion</Set> <Set name="Schema">mySchema</Set> <Set name="OAuth Client Id">myOAuthClientId</Set> <Set name="OAuth Client Secret">myOAuthClientSecret</Set> <Set name="InitiateOAuth">GETANDREFRESH</Set> </New> </Arg> </New> </Configure>

    IBM Cloud Data Engine uses the OAuth and HMAC authentication standards. See the "Getting Started" chapter of the help documentation for a guide to using OAuth.

  4. Configure the resource in the Web.xml:

    jdbc/ibmclouddataenginedb javax.sql.DataSource Container
  5. You can then access IBM Cloud Data Engine with a lookup to java:comp/env/jdbc/ibmclouddataenginedb: InitialContext ctx = new InitialContext(); DataSource myibmclouddataengine = (DataSource)ctx.lookup("java:comp/env/jdbc/ibmclouddataenginedb");

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.