/*
 * Copyright 2008 NeoConsult A/S. All rights reserved.
 * NeoConsult A/S PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
package com.neoconsult.example;

import javax.jws.WebService;
// snip - lot's of imports here

/**
 *
 * @author Nikolaj Andresen - NeoConsult A/S
 */
@WebService(endpointInterface = "com.neoconsult.example.FailedInjectionInterface")
public class FailedInjectionWebService implements FailedInjectionInterface {
    // logging
    private static final Logger LOG = Logger.getLogger(FailedInjectionWebService.class.getName());

    // persistence configuration
    private static final String PERSISTENCE_UNIT_NAME = "FailedInjectionPU";
    @PersistenceUnit(unitName=PERSISTENCE_UNIT_NAME)
    private EntityManagerFactory emf = null;

    ////////////////////////////////////////////////////////////////////////////
    // The following two methods are GlassFish work-arounds, since resource
    // injection doesn't work properly on web service instances on the official
    // URL (the one specified in web.xml).
    ////////////////////////////////////////////////////////////////////////////
    private boolean initialized = false;
    
    @PostConstruct
    public void init() {
        if (emf == null) {
            LOG.warning("Entity Manager Factory failed to be injected - creating one programmatically.");
            emf = Persistence.createEntityManagerFactory(PERSISTENCE_UNIT_NAME);
            initialized = true;
        }
    }
    
    @PreDestroy
    public void destroy() {
        if (initialized) {
            LOG.warning("We initialized ourselves - we must clean up also.");
            emf.close();
        }
    }

    ////////////////////////////////////////////////////////////////////////////
    // Web service methods
    ////////////////////////////////////////////////////////////////////////////
    public Customer findCustomer(String id) {
        Customer result = null;

        EntityManager em = null;
        try {
            em = emf.createEntityManager();
            if (id != null && id.trim().matches("^\\d+$")) {
                // customer id search
                result = em.find(Customer.class, Long.parseLong(id));
            }
        } finally {
            em.close();
        }

        return result;
    }
}