JDBCIdentifierSource (Lyophilizer)

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net.walend.lyophil.jdbc
Class JDBCIdentifierSource

java.lang.Object
  |
  +--net.walend.lyophil.jdbc.JDBCIdentifierSource

All Implemented Interfaces:: IdentifierSource

public class JDBCIdentifierSource
extends java.lang.Object
implements IdentifierSource

A long number source that keeps them in a table in a database and pulls them out one at a time, starting at zero. Built off of the JDBC 1.2 protocol. It'd be much nicer with the JDBC 2.0 protocol.

Since:: 20001127
Author:: David Walend

Field Summary

private java.lang.Object guard
          synchronization guard for the database.

private static long LASTID


static java.lang.String PROPKEY


Fields inherited from interface net.walend.lyophil.IdentifierSource

ROLE

Constructor Summary

JDBCIdentifierSource()


Method Summary

boolean checkSetUp()
          make sure the backing storage is set up correctly

java.io.Serializable createID()
          Return a Long unique in the system, based on a database table.

protected java.lang.String getDatabaseName()


protected PropertySource getLongProperties()


protected PropertySource getPropertySource()


java.io.Serializable peekNextID()
          Returns the next id to be created, without assigning it as in use.

void setUp()
          set up the backing storage

void tearDown()
          clean up the backing storage

Methods inherited from class java.lang.Object

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

Field Detail

PROPKEY

public static final java.lang.String PROPKEY

guard

private final java.lang.Object guard

synchronization guard for the database.

LASTID

private static final long LASTID

Constructor Detail