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 ( clazz == null )
			return DataType.UNKNOWN_TYPE;
		if ( clazz == DataType.AnyType.class )
			return DataType.ANY_TYPE;
		else if ( Integer.class.isAssignableFrom(clazz) )
			return DataType.INTEGER_TYPE;
		else if ( Double.class.isAssignableFrom(  clazz ))
			return DataType.DOUBLE_TYPE;
		else if ( String.class.isAssignableFrom( clazz ))
			return DataType.STRING_TYPE;
		else if ( BigDecimal.class.isAssignableFrom( clazz ))
			return DataType.DECIMAL_TYPE;
		else if (Date.class.isAssignableFrom( clazz ))
			return DataType.DATE_TYPE;
		else if ( byte[].class.isAssignableFrom( clazz))
			return DataType.BINARY_TYPE;
        else if ( Clob.class.isAssignableFrom( clazz ) ||
                  clazz.getName().equals( 
				"org.eclipse.datatools.connectivity.oda.IClob" ) )
			return DataType.STRING_TYPE;
		else if ( Blob.class.isAssignableFrom( clazz ) ||
                  clazz.getName( ).equals( 
				"org.eclipse.datatools.connectivity.oda.IBlob" ) )
			return DataType.BINARY_TYPE;
		
		return DataType.UNKNOWN_TYPE;
	}
    
    /**