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Exception explanation during receive previous bar
pulkownik
 Post subject: Exception explanation during receive previous bar Post rating: 0   New post Posted: Fri 06 May, 2016, 08:37 
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Joined: Fri 06 May, 2016, 08:28
Posts: 8
Location: PolandPoland
In my demo account i run two strategies. The strategies are the same only with one difference: it works on different instruments (EURUSD, EURGBP). The following exception occurs:

com.dukascopy.api.JFException: Could not load bar for instrument [EUR/USD], period [15 Mins], side [Bid], start time [2016.05.05 13:15:00 000], current bar start time [2016.05.05 13:30:00 000]
   at com.dukascopy.api.impl.History.getHistoryBarBlocking(History.java:236)
   at com.dukascopy.api.impl.History.getBar(History.java:201)
   at singlejartest.StrategyEURUSD.onBar(StrategyEURUSD.java:190)
   at com.dukascopy.api.impl.execution.TaskOnBar.postData(TaskOnBar.java:85)
   at com.dukascopy.api.impl.execution.TaskOnBar.call(TaskOnBar.java:63)
   at com.dukascopy.api.impl.execution.TaskOnBar.call(TaskOnBar.java:23)
   at java.util.concurrent.FutureTask.run(FutureTask.java:266)
   at com.dukascopy.api.impl.execution.ScienceThreadPoolExecutor$Worker.runTask(ScienceThreadPoolExecutor.java:904)
   at com.dukascopy.api.impl.execution.ScienceThreadPoolExecutor$Worker.run(ScienceThreadPoolExecutor.java:926)
   at java.lang.Thread.run(Thread.java:745)


It is wired because this exception did not occurs every time. The strategies works for example for two days without any problem and then the exception occurs.
StrategyEURUSD.java:190: 
double previousClose = history.getBar(myInstrument, Period.FIFTEEN_MINS, OfferSide.BID, 1).getClose();

I do not understand this because I only want to get the previous bar on every 15min bar. Only one thing comes to my mind why the code throw exception, maybe because of run two strategies. Please help me :)
 
API Support
 Post subject: Re: Exception explanation during receive previous bar Post rating: 0   New post Posted: Mon 09 May, 2016, 12:29 
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Joined: Fri 31 Aug, 2007, 09:17
Posts: 6139
We were unable to reproduce this. Please, Is there a sample strategy that would reproduce this issue?
 
pulkownik
 Post subject: Re: Exception explanation during receive previous bar Post rating: 0   New post Posted: Mon 09 May, 2016, 14:13 
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Joined: Fri 06 May, 2016, 08:28
Posts: 8
Location: PolandPoland
No it is not a sample strategy. As i said i run my strategy about three weeks on demo account and this exception occurred only twice. Is any another way to get the previous close?
 
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