Bug 148392 Float type fails to be retrieven in scripted datasets
1/ Create a scripted dataset with Float type values, retrive them in the fetch dataset's method configure the output columns and assign them the Float type => result preview fails to show the float columns values 2/ Set the columns' type as Any => the result preview shows normally 3/ Create a chart based on the previous dataset configure the databindings setting float as the said columns type (the dataset's type is Any) => the series fails to appear in the graph (see error in footer) 4/ Change the data bindings for the said columns as Any and use the series fromatting to fix it => the series appears normally
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()