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
* Date	-> String
	 * 		toString(Date,locale)
	 * @param source
	 * @return
	 * @throws BirtException
	 */
	public static String toString( Object source, ULocale locale )
			throws BirtException
	{
		if ( source == null )
			return null;
		
		if ( source instanceof Date )
		{
			return toString( (Date) source, locale );
		}
		else
		{
			String str = "";
			if ( source instanceof byte[] )
			{
				final int strLength = 8;
				byte[] sourceValue = (byte[]) source;
				int length = Math.min( sourceValue.length, strLength );
				for ( int i = 0; i < length; i++ )
				{
					str += Integer.toHexString( sourceValue[i] )
							.toUpperCase( )
							+ " ";
				}