ojb.broker
Class SequenceManager

java.lang.Object
  |
  +--ojb.broker.SequenceManager

public class SequenceManager

extends java.lang.Object

A simple SequenceManager. This class is responsible for creating new unique ID's for primary columns containing integer values. The SequenceManager is aware of extends, that is: if you ask for an uid for an Interface with several implementor classes, or a baseclass with several subclasses the returned uid will unique accross all tables representing objects of the extent in question.

Constructor Summary

SequenceManager(PersistenceBrokerImpl broker)
Public constructor

Method Summary

int	getUniqueId(java.lang.Class clazz, java.lang.String fieldName) returns a unique int for class clazz and field fieldName. the returned uid is unique accross all tables in the extent of clazz.

Methods inherited from class java.lang.Object

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

Constructor Detail

SequenceManager

public SequenceManager(PersistenceBrokerImpl broker)

Public constructor

Method Detail

getUniqueId

public int getUniqueId(java.lang.Class clazz,
                       java.lang.String fieldName)

returns a unique int for class clazz and field fieldName. the returned uid is unique accross all tables in the extent of clazz.