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
catch ( ParseException e )
		{
			return toDate( source, locale );
		}
		
		
		if ( DateUtil.checkValid( dateFormat, source ) == false )
		{
			throw new BirtException( pluginId,
					ResourceConstants.CONVERT_FAILS,
					new Object[]{
							source.toString( ), "Date"
					},
					resourceBundle );
		}
		return resultDate;
	}
	
	/**
	 * Boolean -> Double
	 * 		true 	-> 1
	 * 		others 	-> 0 
	 * Date -> Double
	 * 		Date.getTime();
	 * String -> Double
	 * 		Double.valueOf(String);
	 * @param source
	 * @return
	 * @throws BirtException
	 */