org.apache.wicket.util
Class LongEncoder

java.lang.Object
  org.apache.wicket.util.LongEncoder

public class LongEncoder
extends java.lang.Object

Encodes long values into the specified alphabet. Encoding is useful when long values need to be represented in their string form and shorter values are preferred; by using alphabets of length greater than ten shorter values can be obtained. For example, to encode values into their hexadecimal representations the 0123456789ABCDEF- can be used. Long values can be shortened even further by using longer alphabets. The last character in the alphabet is used as the negative sign.

Author:

igor

Field Summary

static java.lang.String

DEFAULT default alphabet that should be safe to use in most circumstances, while still providing good shortening of long values

Method Summary

static long	decode(java.lang.String value) Decodes value using the default alphabet:
static long	decode(java.lang.String value, java.lang.String alphabet) Decodes value using the specified alphabet
static java.lang.String	encode(long value) Encodes the value into the default alphabet:
static java.lang.String	encode(long value, java.lang.String alphabet) Encodes value into the specified alphabet

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT

public static java.lang.String DEFAULT

default alphabet that should be safe to use in most circumstances, while still providing good shortening of long values

Method Detail

encode

public static java.lang.String encode(long value)

Encodes the value into the default alphabet:

Parameters:

value -

Returns:

encoded value

decode

public static long decode(java.lang.String value)

Decodes value using the default alphabet:

Parameters:

value -

Returns:

decoded value

encode

public static java.lang.String encode(long value,
                                      java.lang.String alphabet)

Encodes value into the specified alphabet

Parameters:

value -

alphabet -

Returns:

encoded value

decode

public static long decode(java.lang.String value,
                          java.lang.String alphabet)

Decodes value using the specified alphabet

Parameters:

value -

alphabet -

Returns:

decoded value