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
* convert object to Integer. If fails, return null. 
	 * Object -> Integer
	 */
	public static Integer toIntegerValue( Object evaValue )
	{
		
		Integer value = null;
		if ( evaValue instanceof String )
		{
			String stringValue = evaValue.toString( );
			try
			{
				
				value = Integer.valueOf( stringValue );
			}
			catch ( NumberFormatException e1 )
			{
				try
				{
					Double ddValue = Double.valueOf( stringValue );
					int intValue = ddValue.intValue( );
					double doubleValue = ddValue.doubleValue( );
					
					
					if ( Math.abs( intValue - doubleValue ) < 0.0000001 )
					{
						value = Integer.valueOf( String.valueOf( intValue ) );
					}
					else
					{