It's being called twice because, since you defined it as scope=singleton,
Spring is creating a singleton instance for you automatically on start-up.
Then your code is creating another instance in your getStartupService()
method. You don't need to explicitly instantiate one, just let Spring
inject it where you need it.
(*Chris*)
On Tue, Jul 13, 2010 at 11:42 AM, hisameer <cool_sameer_fo...@yahoo.com>wrote:
>
> Thanks for the suggestion. I have implemented it, but the issue is that the
> bean is called twice.I am using websphere server 6.1. Do you have any idea
> why its happening?
>
> Here is the code in ApplicationContext.xml
>
> <bean id="initBean" class="com.singleton.startup.service.StartUPService"
> scope="singleton" init-method="init">
> <property name="flag" value="true" />
> <property name="days" value="15" />
> </bean>
>
>
> and StartUPService.java class looks like this:
> public class StartUPService implements ApplicationContextAware {
>
> private static StartUPService ref;
>
> private ApplicationContext ctx;
>
> private static Logger logger =
> Logger.getLogger(StartUPService.class);
>
> private boolean flag= true;
>
> private ServiceDAO dao;
>
> private int days= 15;
>
> private StartUPService() {
> // no code req'd
> }
>
> public static StartUPService getStartUPService() {
>
> if (ref == null) {
> // it's ok, we can call this constructor
> ref = new StartUPService();
> }
> return ref;
> }
>
> public void init() {
>
> if (ref == null) {
> // it's ok, we can call this constructor
> ref = new StartUPService();
> long startTime = System.currentTimeMillis();
> loadRequiredObject();
> long endTime = System.currentTimeMillis();
> logger.info("The Total time taken is: " + (endTime
> - startTime)
> + " ms");
> }
>
> }
>
> private void loadRequiredObject(){
> if (dao== null) {
> dao= (ServiceDAO) ctx.getBean("daoBean");
> }
> //here I will do some processing using the database access using dao
> service layer
> }
>
>
> satyanarayana katta wrote:
> >
> > Using the application level spring container would be sufficient with
> init
> > method set.
> >
> > Sent from my iPhone
> >
> > On Jun 25, 2010, at 11:36 AM, hisameer <cool_sameer_fo...@yahoo.com>
> > wrote:
> >
> >>
> >> Hi,
> >>
> >> I am using Struts2.1.6+Spring2.5.6+Hibernate+JPA in my web application.
> >> The
> >> application server is JBOSS5. I have to implement a logic so that when
> >> the
> >> server starts I can execute some database scripts using my DAO service
> >> layer. And this class is responsible loading some required variables
> from
> >> the database. The class should execute only one on the start up.
> >>
> >> Please give me some suggestions how to do this. If possible write some
> >> sample code.
> >>
> >> Thanks,
> >> Sameer
> >> --
> >> View this message in context:
> >>
> http://old.nabble.com/How-to-modify-Struts2-start-up-process.-tp28995322p28995322.html
> >> Sent from the Struts - User mailing list archive at Nabble.com.
> >>
> >>
> >> ---------------------------------------------------------------------
> >> To unsubscribe, e-mail: user-unsubscr...@struts.apache.org
> >> For additional commands, e-mail: user-h...@struts.apache.org
> >>
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: user-unsubscr...@struts.apache.org
> > For additional commands, e-mail: user-h...@struts.apache.org
> >
> >
> >
>
> --
> View this message in context:
> http://old.nabble.com/How-to-modify-Struts2-start-up-process.-tp28995322p29154226.html
> Sent from the Struts - User mailing list archive at Nabble.com.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: user-unsubscr...@struts.apache.org
> For additional commands, e-mail: user-h...@struts.apache.org
>
>
