Custom Spring Timers

Tag:lin    main thread    service   cond   time ()     str   get   exce    inject    

 package   Com.wjz.quartz;  import   java.util.concurrent.Executors;  public  class   Quartzdemo { public  static  void  main (string[] args)  Throws   Exception { new   myrunnable (Executors.newsinglethreadscheduledexecutor ()). Schedule ();  //  Here the main thread sleeps because if the main threaded execution is done, the Myrunnable object is destroyed. The experimental effect cannot be            Show  Thread.Sleep (1000*60*5

I can see the initialization of a task thread delay scheduler Scheduledexecutorservice executor = Executors.newsinglethreadscheduledexecutor (); Injected into the runnable.

The core class Myrunnable implements the Runnable and Scheduledfuture interfaces

Task scheduling performed in the Run method

 PackageCom.wjz.quartz;Importjava.util.Date;Importjava.util.concurrent.Delayed;Importjava.util.concurrent.ExecutionException;ImportJava.util.concurrent.ScheduledExecutorService;Importjava.util.concurrent.ScheduledFuture;ImportJava.util.concurrent.TimeUnit;Importjava.util.concurrent.TimeoutException;ImportOrg.springframework.scheduling.support.SimpleTriggerContext;classMyrunnableImplementsRunnable, scheduledfuture<object> {        Private FinalScheduledexecutorservice executor; Private FinalMytrigger trigger =NewMytrigger (); Private FinalSimpletriggercontext Triggercontext =NewSimpletriggercontext (); Private FinalObject Triggercontextmonitor =NewObject (); PrivateScheduledfuture<?>currentfuture; PrivateDate Scheduledexecutiontime;  Publicmyrunnable (Scheduledexecutorservice executor) { This. Executor =executor; }         PublicScheduledfuture<?>Schedule () {synchronized(triggercontextmonitor) {
　　　　　　　 //Get the next execution time in the plan  This. Scheduledexecutiontime =Trigger.nextexecutiontime (Triggercontext); LongDelay = Scheduledexecutiontime.gettime ()-System.currenttimemillis ();
　　　　　　　 //Delay task scheduling  This. currentfuture = Executor.schedule ( This, delay, timeunit.milliseconds); return  This; }    }         Public voidrun () {Date actualexecutiontime=NewDate (); System.out.println ("------Call timing Method------"); Date Completiontime=NewDate (); synchronized(triggercontextmonitor) {triggercontext.update (Scheduledexecutiontime, Actualexecutiontime, CompletionTim            e); if(! This. currentfuture.iscancelled ())            {Schedule (); }        }    }     Public BooleanCancelBooleanmayinterruptifrunning) {        synchronized( This. Triggercontextmonitor) {            return  This. Currentfuture.cancel (mayinterruptifrunning); }    }     Public Booleaniscancelled () {synchronized( This. Triggercontextmonitor) {            return  This. currentfuture.iscancelled (); }    }     Public BooleanIsDone () {synchronized( This. Triggercontextmonitor) {            return  This. Currentfuture.isdone (); }    }     PublicObject get ()throwsinterruptedexception, executionexception {scheduledfuture<?>Curr; synchronized( This. Triggercontextmonitor) {Curr= This. currentfuture; }        returnCurr.get (); }     PublicObject Get (LongTimeout, timeunit unit)throwsinterruptedexception, Executionexception, timeoutexception {scheduledfuture<?>Curr; synchronized( This. Triggercontextmonitor) {Curr= This. currentfuture; }        returnCurr.get (timeout, unit); }     Public Longgetdelay (timeunit unit) {scheduledfuture<?>Curr; synchronized( This. Triggercontextmonitor) {Curr= This. currentfuture; }        returnCurr.getdelay (unit); }     Public intCompareTo (Delayed other) {if( This==Other ) {            return0; }        Longdiff = Getdelay (timeunit.milliseconds)-Other.getdelay (timeunit.milliseconds); return(diff = = 0? 0: (diff < 0)? -1:1)); }}

Trigger is mainly to return the trigger time

 PackageCom.wjz.quartz;Importjava.util.Date;ImportOrg.springframework.scheduling.Trigger;ImportOrg.springframework.scheduling.TriggerContext; Public classMytriggerImplementsTrigger {PrivateMySequence sequence =NewMySequence ();  PublicDate Nextexecutiontime (Triggercontext triggercontext) {Date Date=Triggercontext.lastcompletiontime (); if(Date = =NULL) {Date=NewDate (); }        returnSequence.next (date); }}

The schedule builder mainly generates trigger times and returns the next trigger time

 PackageCom.wjz.quartz;ImportJava.util.BitSet;ImportJava.util.Calendar;Importjava.util.Date;ImportJava.util.GregorianCalendar;ImportJava.util.TimeZone; Public classMySequence {Private FinalBitSet seconds =NewBitSet (60); MySequence () {setnumber (seconds,"0/5", 0, 60); }     PublicDate Next (date date) {Calendar Calendar=NewGregorianCalendar ();        Calendar.settime (date);        Calendar.settimezone (Timezone.getdefault ()); //Resetting the number of millisecondsCalendar.set (Calendar.millisecond, 0); LongOriginaltimestamp =Calendar.gettimeinmillis ();        Donext (Calendar); if(Calendar.gettimeinmillis () = =Originaltimestamp) {            //Calendar Time just to the original timestamp time, plus one secondCalendar.add (Calendar.second, 1);        Donext (Calendar); }        returnCalendar.gettime (); }    Private voiddonext (Calendar calendar) {intSecond =Calendar.get (Calendar.second); intNextsecond =Seconds.nextsetbit (second); if(Nextsecond = =-1) {            //add a minute .Calendar.add (Calendar.minute, 1); //Reset number of secondsCalendar.set (Calendar.second, 0); Nextsecond= Seconds.nextsetbit (0); }        if(Second! =Nextsecond)        {Calendar.set (Calendar.second, Nextsecond); }    }        Private Static voidSetnumber (BitSet BitSet, String field,intMinintmax) {string[] fields= Field.split ("/");//0, 5        int[] split =New int[2]; intStart = split[0] = integer.valueof (fields[0]); intGrow = split[1] = integer.valueof (fields[1]); int[] Range =New int[2]; range[0] = split[0]; intend = Range[1] = max-1;  for(inti = start; I < end; i + =grow)        {Bitset.set (i); }    }}

Custom Spring Timers