java - How to start a transaction in another thread? -

spring 4.

i'm working on implementing updatable cache through scheduledthreadpoolexecutor. looks follows:

public class myservice {      @setter     private mydao mydao;     //immutable     private volatile cache cache;      //static factory method     public static myservice create(){         myservice retval = new myservice();         cache = cache.emptycache();         updatecache();     }      @transactional(propagation = propagation.requires_new)     public int get(){          //retrieving cache          return cache.getnext();     }      private void updatecache() {         try{             scheduledexecutorservice ses = executors.newscheduledthreadpool(1);             //the runnable should in transaction.             runnable updatecache;             //the runnable queries mydao,             //which in turn implemented db-dao             //the cache assigned after computation             ses.schedulewithfixeddelay(updatecache, 0, 60, timeunit.seconds);         } catch (throwable t){ }     } } 

my question how can run runnable job in transaction?

annotating updatecache() @transactional won't work long transactions thread bound.

don't schedule that, use scheduling support of spring.

public class myservice {      @setter     private mydao mydao;     //immutable     private volatile cache cache;      //static factory method     public static myservice create(){         myservice retval = new myservice();         cache = cache.emptycache();         updatecache();     }      @transactional(propagation = propagation.requires_new)     public int get(){          //retrieving cache          return cache.getnext();     }      @transactional     @scheduled(fixeddelay=60000)     public void updatecache() {             //the runnable queries mydao,             //which in turn implemented db-dao             //the cache assigned after computation     } } 

then either add @enablescheduling or <task:annotation-driven />. see earlier mentioned link more configuration options.