Connect to LINE Data from a Connection Pool in Jetty

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

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

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

   LINE API Profile Settings

   The LINE Messaging API uses Channel Access Token authentication. To obtain a Channel Access Token:

   1. Log in to the LINE Developers Console at https://developers.line.biz
   2. Select your provider and open your Messaging API channel.
   3. Navigate to the Messaging API tab.
   4. Under Channel access token, click Issue to generate a long-lived token.
   5. Copy the generated token.

   After obtaining your Channel 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 LINE Channel Access Token.

4. Configure the resource in the Web.xml:

   
   
     jdbc/linedb
     javax.sql.DataSource
     Container
   
   

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

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

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.