Method create_array_formatter

arrow-cast/src/pretty.rs:1255–1284

(
            &self,
            array: &'formatter dyn Array,
            options: &FormatOptions<'formatter>,
            field: Option<&'formatter Field>,
        )

    impl ArrayFormatterFactory for TestFormatters {
        fn create_array_formatter<'formatter>(
            &self,
            array: &'formatter dyn Array,
            options: &FormatOptions<'formatter>,
            field: Option<&'formatter Field>,
        ) -> Result<Option<ArrayFormatter<'formatter>>, ArrowError> {
            if field
                .map(|f| f.extension_type_name() == Some("my_money"))
                .unwrap_or(false)
            {
                // We assume that my_money always is an Int32.
                let array = array.as_primitive();
                let display_index = Box::new(MyMoneyFormatter {
                    array,
                    options: options.clone(),
                });
                return Ok(Some(ArrayFormatter::new(display_index, options.safe())));
            }

            if array.data_type() == &DataType::Int32 {
                let array = array.as_primitive();
                let display_index = Box::new(MyInt32Formatter {
                    array,
                    options: options.clone(),
                });
                return Ok(Some(ArrayFormatter::new(display_index, options.safe())));
            }

            Ok(None)
        }
    }

    /// A format that will append a "€" sign to the end of the Int32 values.