util
Class IDFactory

java.lang.Object
  |
  +--util.IDFactory

public class IDFactory

extends java.lang.Object

collection of string id's; all keys are lowerCase ascii7; createUniqueID() returns a string which is added to this collection length of keys can be limited by setMaxLength()

Field Summary

private java.util.Map	inUse map of id's in use @see setInUse( Map m )
private int	maxLength

Constructor Summary

IDFactory()

Method Summary

void	addToInUse(java.util.Collection l)
void	addToInUse(java.lang.String s)
void	addToInUse(java.lang.String s, java.lang.Object o)
java.lang.String	createUniqueID(IDObject io) create id and set id of id-object
java.lang.String	createUniqueID(java.util.Map mapInUse, java.lang.Object o) check a string against the keys of a map and return a string value unique to this map
java.lang.String	createUniqueID(java.lang.String val) create string unique in collection
static void	doAddToInUse(java.util.Map m, java.lang.Object o) add entry with this id-factory key and given object Object could be instance of IDObject; in which case getID() is used for key; otherwise toString() is used;
java.util.Map	getInUseMap()
int	getMaxLength()
static java.lang.String	idfKey(java.lang.String s) translate string to id-factory key: lowercase ascii string
void	setInUseMap(java.util.Map m)
void	setMaxLength(int i)

Methods inherited from class java.lang.Object

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

Field Detail

inUse

private java.util.Map inUse

map of id's in use @see setInUse( Map m )

maxLength

private int maxLength

Constructor Detail

IDFactory

public IDFactory()

Method Detail

setInUseMap

public void setInUseMap(java.util.Map m)

See Also:

addToInUse(java.util.Collection)

getInUseMap

public java.util.Map getInUseMap()

Returns:

Map inUse; HashMap is created if inUse is not set

setMaxLength

public void setMaxLength(int i)

getMaxLength

public int getMaxLength()

addToInUse

public void addToInUse(java.util.Collection l)

createUniqueID

public java.lang.String createUniqueID(java.lang.String val)

create string unique in collection

Returns:

String unique id string

createUniqueID

public java.lang.String createUniqueID(IDObject io)

create id and set id of id-object

Returns:

String new id

addToInUse

public void addToInUse(java.lang.String s)

addToInUse

public void addToInUse(java.lang.String s,
                       java.lang.Object o)

doAddToInUse

public static void doAddToInUse(java.util.Map m,
                                java.lang.Object o)

add entry with this id-factory key and given object

Object could be instance of IDObject; in which case getID() is used for key; otherwise toString() is used;

See Also:

idfKey(java.lang.String)

idfKey

public static java.lang.String idfKey(java.lang.String s)

translate string to id-factory key: lowercase ascii string

createUniqueID

public java.lang.String createUniqueID(java.util.Map mapInUse,
                                       java.lang.Object o)

check a string against the keys of a map and return a string value unique to this map

Returns:

val if val doesn't occur in m or val + '1', or '2' etc until val is unique