Bug 178164 Use IEngineTask.status constants and remove unnecessary status variables in EngineTask.
1)Remove following redundant variables in EngineTask used for status info. protected final int RUNNING_STATUS_START = 0; protected final int RUNNING_STATUS_RUNNING = 1; protected final int RUNNING_STATUS_STOP = 2; EngineTask already has access to constants declared in IEngineTask. Use those instead. 2)Remove the unused errorHandlingOption in EngineTask.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/impl/EngineTask.java
try
		{
			executionContext.setDataSource( dataSource );
		}
		catch ( IOException ioex )
		{
			log.log( Level.WARNING, "failed to open the data source document",
					ioex );
		}
	}
	public int getStatus()
	{
		switch(runningStatus)
		{
			case RUNNING_STATUS_START:
				return STATUS_NOT_STARTED;
			case RUNNING_STATUS_RUNNING:
				return STATUS_RUNNING;
			case RUNNING_STATUS_STOP:
				if (cancelFlag)
				{
					return STATUS_CANCELLED;
				}
				if ( executionContext.hasErrors( ))
				{
					return STATUS_FAILED;
				}
				return STATUS_SUCCEEDED;
		}
		assert false;