Package de.caluga.morphium

Klasse SequenceGenerator

java.lang.Object

de.caluga.morphium.SequenceGenerator

public class SequenceGenerator
extends Object

User: Stephan Bösebeck Date: 24.07.12 Time: 21:36

Generate a new unique sequence number. Uses Sequence to store the current value. Process is as follows:

• lock the entry in sequence collection with my own UUID (rather unique) using atomar $set operation
• read my locked entries (should only be one). If one is found, I have a valid lock. If not found, somebody locked over. Wait a while and try again
• increase the number by one (or the given increment) on the locked element, get this value
• remove the lock (atomar using $set)
• return current value

Verschachtelte Klassen - Übersicht

Verschachtelte Klassen

Modifizierer und Typ	Klasse	Beschreibung
static class	SequenceGenerator.RecursionException

Konstruktorübersicht

Konstruktoren

Konstruktor	Beschreibung
SequenceGenerator(Morphium m, String n)
SequenceGenerator(Morphium mrph, String name, int inc, long startValue)

Methodenübersicht

Modifizierer und Typ	Methode	Beschreibung
long	getCurrentValue()
String	getId()
int	getInc()
Morphium	getMorphium()
String	getName()
long	getNextValue()
long	getStartValue()
void	setId(String id)
void	setInc(int inc)
void	setMorphium(Morphium morphium)
void	setName(String name)
void	setStartValue(long startValue)

Von Klasse geerbte Methoden java.lang.Object

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

Konstruktordetails

SequenceGenerator

public SequenceGenerator(Morphium m,
 String n)

SequenceGenerator

public SequenceGenerator(Morphium mrph,
 String name,
 int inc,
 long startValue)

Methodendetails

getCurrentValue

public long getCurrentValue()

getNextValue

public long getNextValue()

getInc

public int getInc()

setInc

public void setInc(int inc)

getStartValue

public long getStartValue()

setStartValue

public void setStartValue(long startValue)

getId

public String getId()

setId

public void setId(String id)

getName

public String getName()

setName

public void setName(String name)

getMorphium

public Morphium getMorphium()

setMorphium

public void setMorphium(Morphium morphium)