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From Chris Pratt <thechrispr...@gmail.com>
Subject Re: How to modify Struts2 start up process.
Date Tue, 13 Jul 2010 20:11:47 GMT
Umm, no I'm saying let Spring manage the singleton, you don't need to do it
yourself.  Especially since the original question was how to have it created
at initialization time.  If you remove scope=prototype, it won't be
auto-created for you, and you will have defeated the whole point.
  (*Chris*)

On Tue, Jul 13, 2010 at 12:36 PM, hisameer <cool_sameer_for_u@yahoo.com>wrote:

>
> So basically you are saying is that remove scope="singleton"  right?
>
>
> Chris Pratt wrote:
> >
> > 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_for_u@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_for_u@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.
> >> >>
> >> >>
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> >> >>
> >> >
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> >> >
> >> >
> >> >
> >>
> >> --
> >> 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.
> >>
> >>
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> >>
> >>
> >
> >
>
> --
> View this message in context:
> http://old.nabble.com/How-to-modify-Struts2-start-up-process.-tp28995322p29154837.html
> Sent from the Struts - User mailing list archive at Nabble.com.
>
>
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