Package net.sf.basedb.util.formatter

Class AdaptiveNumberFormatter

java.lang.Object

net.sf.basedb.util.formatter.NumberFormatter

net.sf.basedb.util.formatter.AdaptiveNumberFormatter

All Implemented Interfaces:

ExcelFormatter<Number,Number>, Formatter<Number>

public class AdaptiveNumberFormatter
extends NumberFormatter

Formats a number for output on a web page adapting thwe number of decimals depending on the order of magnitude of the value. The precision value is defined to be the number of decimals to use for values between 1 and 10 (not inclusive). The number of decimals are then increase or decreased for each order of magnitude that the value get smaller or larger.

Since:

3.2.2

Author:

nicklas

Last modified

$Date$

Field Summary

Fields

Modifier and Type	Field	Description
private int	precision

Constructor Summary

Constructors

Constructor	Description
AdaptiveNumberFormatter(int precision, boolean doubleValues)	Create a new number formatter.

Method Summary

Modifier and Type	Method	Description
String	format(Number value)	Format a value by converting it to a string.
private int	getNumDecimals(Number value)
ExcelValue<Number>	toExcelValue(Number value)	Convert and format the given value to an Excel value.

Methods inherited from class net.sf.basedb.util.formatter.NumberFormatter

parseString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

precision

private final int precision

Constructor Details

AdaptiveNumberFormatter

public AdaptiveNumberFormatter(int precision,
boolean doubleValues)

Create a new number formatter.

Parameters:

precision - The number of decimals to display for values between 1 and 10 (for lower and higher values the number of decimals is adjusted), or a negative value to display all decimals

doubleValues - If the NumberFormatter.parseString(String) should return double or float values

See Also:

Values.formatNumber(Float, int)

Method Details

format

public String format(Number value)

Description copied from interface: Formatter

Format a value by converting it to a string.

Specified by:

format in interface Formatter<Number>

Overrides:

format in class NumberFormatter

Parameters:

value - The value to format

Returns:

A formatted string

toExcelValue

public ExcelValue<Number> toExcelValue(Number value)

Description copied from interface: ExcelFormatter

Convert and format the given value to an Excel value. If the value is null the implementation may return null to create an empty cell or it may return another non-null value.

Specified by:

toExcelValue in interface ExcelFormatter<Number,Number>

Overrides:

toExcelValue in class NumberFormatter

Since:

3.15

getNumDecimals

private int getNumDecimals(Number value)