Connect to Snowflake Data from a Connection Pool in Jetty

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

   <Configure id='snowflakedemo' class="org.eclipse.jetty.webapp.WebAppContext"> <New id="snowflakedemo" class="org.eclipse.jetty.plus.jndi.Resource"> <Arg><Ref refid="snowflakedemo"/></Arg> <Arg>jdbc/snowflakedb</Arg> <Arg> <New class="cdata.jdbc.snowflake.SnowflakeDriver"> <Set name="url">jdbc:snowflake:</Set> <Set name="User">Admin</Set> <Set name="Password">test123</Set> <Set name="Server">localhost</Set> <Set name="Database">Northwind</Set> <Set name="Warehouse">TestWarehouse</Set> <Set name="Account">Tester1</Set> </New> </Arg> </New> </Configure>

   To connect to Snowflake:

   1. Set User and Password to your Snowflake credentials and set the AuthScheme property to PASSWORD or OKTA.
   2. Set URL to the URL of the Snowflake instance (i.e.: https://myaccount.snowflakecomputing.com).
   3. Set Warehouse to the Snowflake warehouse.
   4. (Optional) Set Account to your Snowflake account if your URL does not conform to the format above.
   5. (Optional) Set Database and Schema to restrict the tables and views exposed.

   See the Getting Started guide in the CData driver documentation for more information.

4. Configure the resource in the Web.xml:

   jdbc/snowflakedb javax.sql.DataSource Container

5. You can then access Snowflake with a lookup to java:comp/env/jdbc/snowflakedb: InitialContext ctx = new InitialContext(); DataSource mysnowflake = (DataSource)ctx.lookup("java:comp/env/jdbc/snowflakedb");

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.