Web Services Essentials

Service Code

The complete service code is shown in Example 5-11. The code maintains a single instance variable, called counter. For each client request, counter is incremented.

Example 5-11. CounterService.java

package com.ecerami.soap;

/**
 * A Sample SOAP Service
 * Illustrates Session v. Application Scope
 *
 * When this service is deployed with Scope="Session",
 * server will instantiate one instance of CounterService
 * per client.  CounterService will then maintain total
 * number of requests per session.
 *
 * When this service is deployed with Scope="Application",
 * server will instantiate just one instance of CounterService.
 * CounterService will then maintain total number of requests
 * across all sessions.
 *
 */
public class CounterService {
  private int counter;    //  Number of requests

  /**
   * Constructor
   */
  public CounterService (  ) { counter = 0; }

  /**
  *  Return number of requests
  */
  public int getCounter (  ) { return ++counter; }
}