Enterprise JavaBeans 3.1, 6th Edition

Source Listing

Following is a full listing of all source code used in this runnable example.

Implementation Resources

CalculatorBeanBase.java

package org.jboss.ejb3.examples.ch04.firstejb;

import org.jboss.logging.Logger;

/**
 * Base for bean implementation classes of the CalculatorEJB,
 * provides business logic for required contracts
 *
 * @author <a href="mailto:[e-mail]">ALR</a>
 */
public class CalculatorBeanBase implements CalculatorCommonBusiness
{
   // ---------------------------------------------------------------------------||
   // Class Members -------------------------------------------------------------||
   // ---------------------------------------------------------------------------||

   /**
    * Logger
    */
   private static final Logger log = Logger.getLogger(CalculatorBeanBase.class);

   // ---------------------------------------------------------------------------||
   // Required Implementations --------------------------------------------------||
   // ---------------------------------------------------------------------------||

   /**
    * {@inheritDoc}
    * @see org.jboss.ejb3.examples.ch04.firstejb.CalculatorCommonBusiness#add(int
[])
    */
   @Override
   public int add(final int... arguments)
   {
      // Initialize
      final StringBuffer sb = new StringBuffer();
      sb.append("Adding arguments: ");
      int result = 0;

      // Add all arguments
      for (final int arg : arguments)
      {
         result += arg;
         sb.append(arg);
         sb.append(" ");
      }

      // Return
      log.info(sb.toString());
      log.info("Result: " + result);
      return result;
   }

}

CalculatorCommonBusiness.java ...