Is it a good idea to synchronize DispathAction to make sure all requests
to DB and results which come back don't overstep each other ?
Pls help.
Following is some detail of what am I doing in my application.
I have few operation I want to synchronize.
In my app following steps I am taking
1. calling dispatch Action getInstrumentsFromQ as under, Should
this be synchronized ?
public ActionForward getInstrumentsFromQ(ActionMapping
mapping, ActionForm form, HttpServletRequest request, HttpServletResponse
response) throws Exception {
..
..
}
2. In Dao service I have couple of lists which are stored as Class
variable, where I store one I received from DB.
public class InstrumentDiceQdao extends BaseDao implements
InstrumentDao{
private List instruments =(List )
Collections.synchronizedList(new ArrayList());
private List instrumentDbItems = (List)
Collections.synchronizedList(new ArrayList());
public synchronized List
getAllInstrumentsFromQ(Long sectorId) throws DiceWebException {
...
...
}
}
3. I am putting service object which has results of all DB query
in Session, so I can access from various places in web.
InstrumentService instService = new
InstrumentDaoService(ds) ;
try {
synchronized(instService)
{
List instruments =
instService.getAllinstrumentsFromQ(sectorId);
session.setAttribute("InstrumentService",instService);
}
}
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