Bug 198917 set __parameterpage to false for required parameter will cause wrong Exception[0705]
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/impl/EngineTask.java
? null
				: locale.getDisplayName( ) );
		doSetLocale( locale );
	}
	private void doSetLocale( Locale locale )
	{
		this.locale = locale;
		executionContext.setLocale( locale );
		EngineException.setULocale( ULocale.forLocale( locale ) );
	}
	/**
	 * sets the task locale
	 * 
	 * @param locale
	 *            the task locale
	 */
	public void setLocale( ULocale uLocale )
	{
		log.log( Level.FINE, "EngineTask.setLocale: uLocale={0}",
				uLocale == null ? null : uLocale.getDisplayName( ) );
		doSetLocale( uLocale.toLocale( ) );
	}
	/**
	 * sets the task context
	 * 
	 * @param context
	 *            the task context
	 */
	public void setAppContext( Map context )
	{