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
* 		Boolean.toString()
	 * Date	-> String
	 * 		toString(Date)
	 * @param source
	 * @return
	 * @throws BirtException
	 */
	public static String toString( Object source ) throws BirtException
	{
		return toString( source, ULocale.getDefault( ) );
	}
	/**
	 * A temp solution to the adoption of ICU4J. It is a simple delegation
	 * to toString( Object, Locale ).
	 * @param source
	 * @return
	 * @throws BirtException
	 */
	public static String toString( Object source, Locale locale )
			throws BirtException
	{
		return toString( source, ULocale.forLocale( locale ) );
	}
	/**
	 * Number -> String
	 * 		Number.toString()
	 * Boolean -> String
	 * 		Boolean.toString()
	 * Date	-> String
	 * 		toString(Date,locale)