How to make the JavaExecute component to fail

evijayan2

• March 07, 2014 00:00

• Answered

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hi team,

i have a situation,

if the inputfile is empty, the graph have to fail.

i use the UniversaldataReader to read the file. I felt no option in datareader.

So i used the javaExecute component to validate the input file. the run() metghon returns void, so i cant mark as failed.( i have to give system.exit(-1)).

other wise init() method to return false, then clover server throws componentinitialization failed exception.

Please help me to resolve this situation.

• 

  novakj

  • March 10, 2014 11:53

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  Hi,
  
  If your validation of input file fails, you can throw runtime exception. This exception will interrupt graph processing.
  
  Example of a class with runtime exception:
  
  

  import org.jetel.component.BasicJavaRunnable;
  import org.jetel.exception.JetelRuntimeException;
  
  public class MyClass extends BasicJavaRunnable {
  
  	@Override
  	public void run() {
  		
  		// write into information log
  		getNode().getLog().info("Custom info message");
  		
  		// Component JavaExecute will finish with status error with following message
  		throw new JetelRuntimeException("Input file is empty");
  	}
  
  }

  
  
  In console you can see:
  
  

  ERROR [main] - 
  --------------------------------- Error details ----------------------------------
    Component [JavaExecute:JAVA_EXECUTE] finished with status ERROR.
     Input file is empty
  ----------------------------------------------------------------------------------
  ERROR [main] - Execution of graph failed !

• 

  evijayan2

  • May 07, 2014 20:42

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  Thanks

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