@Override
   public Object handleDefault(InvocationContext ctx, VisitableCommand command) throws Throwable {
      if (!ctx.isOriginLocal()) {
         // Nothing to do for remote calls
         return invokeNext(ctx, command);
      }

      Transaction tx;
      if (transactionManager.getTransaction() != null || (tx = batchContainer.getBatchTransaction()) == null) {
         // The active transaction means we are in an auto-batch.
         // No batch means a read-only auto-batch.
         // Either way, we don't need to do anything
         return invokeNext(ctx, command);
      }

      try {
         transactionManager.resume(tx);
         if (ctx.isInTxScope()) {
            return invokeNext(ctx, command);
         }

         log.tracef("Called with a non-tx invocation context: %s", ctx);
         InvocationContext txInvocationContext = invocationContextFactory.createInvocationContext(true, -1);
         return invokeNext(txInvocationContext, command);
      } finally {
         suspendTransaction();
      }
   }
@ Override public Object handleDefault ( InvocationContext ctx , VisitableCommand command ) throws Throwable { if ( ! ctx . isOriginLocal ( ) ) { return invokeNext ( ctx , command ) ; } Transaction tx ; if ( transactionManager . getTransaction ( ) != null || ( tx = batchContainer . getBatchTransaction ( ) ) == null ) { return invokeNext ( ctx , command ) ; } try { transactionManager . resume ( tx ) ; if ( ctx . isInTxScope ( ) ) { return invokeNext ( ctx , command ) ; } log . tracef ( "Called with a non-tx invocation context: %s" , ctx ) ; InvocationContext txInvocationContext = invocationContextFactory . createInvocationContext ( true , - 1 ) ; return invokeNext ( txInvocationContext , command ) ; } finally { suspendTransaction ( ) ; } }
Simply check if there is an ongoing tx. <ul> <li>If there is one, this is a no-op and just passes the call up the
chain.</li> <li>If there isn't one and there is a batch in progress, resume the batch's tx, pass up, and finally
suspend the batch's tx.</li> <li>If there is no batch in progress, just pass the call up the chain.</li> </ul>