Question

I have a DBApdater class that is accessed through many AsyncTasks. Each operation defined on the DB has to call a function written in the DBAdappter class called open, insert or delete from the db, and then close the DB. If one Async object has called open through an object of the DbApater how can i prevent a second AsyncTasks to call open until the first AsyncTask has called close on the DB. Could i use a lock like public static Object myLock =new Object();

and in the open mentod write

public void open()
{
      synchronizaed(myLock.getClass)
      {///Open the DB  
      }
}

public void close()
{
    synchronizaed(myLock.getClass)
      {///close the DB  
      }
     notify();
}

would this code work. Basically the calling class would obtain a lock on the open menthod and release it only when close is called.

Kind Regards,

Muhammad Mateen

Answer 1

Synchronizing the access to database via open() and close() methods is the right approach in my mind. This should work.