Bug 151381 [Smoke]The parameter didn't display in the web viewer
Description: Preview a parameter in the web viewer, it can't be previewed. Step to reproduce: 1. new a report and a parameter 2. drag it to the layout 3. preview it in the web viewer Actual result: the parameter is not displayed
core/org.eclipse.birt.core/src/org/eclipse/birt/core/data/DataTypeUtil.java
{
	
	private static Map dateTimeholder = new HashMap( );
	private static Map dateHolder = new HashMap( );
	/**
	 * 
	 *
	 */
	private DateFormatHolder( )
	{
	}
	/**
	 * 
	 * @param dateStyle
	 * @param timeStyle
	 * @param locale
	 * @return
	 */
	public static DateFormat getDateTimeInstance( int dateStyle, int timeStyle,
			ULocale locale )
	{
		
		String key = String.valueOf( dateStyle )
				+ ":" + String.valueOf( timeStyle ) + ":" + locale.getName( );