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
attribute.getDisplayText( ) );
		}
		if ( runnable == null )
		{
			return;
		}
		
		new ParameterVisitor( ) {
			boolean visitScalarParameter( ScalarParameterHandle param,
					Object userData )
			{
				String name = param.getName( );
				if ( !inputValues.containsKey( name ) )
				{
					Object value = convertToType( param.getDefaultValue( ),
							param.getDataType( ) );
					executionContext.setParameterValue( name, value );
					runValues.put( name, value );
				}
				return true;
			}
			boolean visitParameterGroup( ParameterGroupHandle group,
					Object value )
			{
				return visitParametersInGroup( group, value );
			}
		}.visit( (ReportDesignHandle) runnable.getDesignHandle( ) );
	}
	public void close( )
	{