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
if ( sourceValue.length > strLength )
				{					
					str += "...";
				}
			}
			else
			{
				str = source.toString( );
			}
			return str;
		}
	}
	/**
	 * Converting Blob to/from other types is not currently supported
	 * @param source
	 * @return
	 * @throws BirtException
	 */
	public static Blob toBlob( Object source ) throws BirtException
	{
		
		if ( source == null )
			return null;
		
		if ( source instanceof Blob )
			return (Blob) source;
		else
			throw new BirtException( pluginId,
					ResourceConstants.CONVERT_FAILS,
					new Object[]{