org.archive.wayback.util.bdb
Class BDBMap

java.lang.Object
  org.archive.wayback.util.bdb.BDBMap

public class BDBMap
extends java.lang.Object

Generic class for simple key-value pair lookup using BDBJE.

Version:

$Date: 2008-07-14 18:51:52 -0700 (Mon, 14 Jul 2008) $, $Revision: 2453 $

Author:

oskar.grenholm@kb.se

Field Summary

protected com.sleepycat.je.Database	db
protected java.lang.String	dir
protected com.sleepycat.je.Environment	env
protected java.lang.String	name

Constructor Summary

BDBMap(java.lang.String name, java.lang.String dir)
consturctor

Method Summary

static void	addTimestampForId(java.lang.String context, java.lang.String ip, java.lang.String time) associate timestamp time with idenfier ip persistantly
java.lang.String	get(java.lang.String keyStr) retrieve the value assoicated with keyStr from persistant storage
static BDBMap	getContextMap(java.lang.String context)
static java.lang.String	getTimestampForId(java.lang.String context, java.lang.String ip) return the timestamp associated with the identifier argument, or now if no value is associated or something goes wrong.
protected void	init()
void	put(java.lang.String keyStr, java.lang.String valueStr) persistantly store key-value pair

Methods inherited from class java.lang.Object

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

Field Detail

env

protected com.sleepycat.je.Environment env

db

protected com.sleepycat.je.Database db

name

protected java.lang.String name

dir

protected java.lang.String dir

Constructor Detail

BDBMap

public BDBMap(java.lang.String name,
              java.lang.String dir)

consturctor

Parameters:

name - of database

dir - path of directory where dbd files should be stored. The directory is created if it does not exist.

Method Detail

init

protected void init()

put

public void put(java.lang.String keyStr,
                java.lang.String valueStr)

persistantly store key-value pair

Parameters:

keyStr -

valueStr -

get

public java.lang.String get(java.lang.String keyStr)

retrieve the value assoicated with keyStr from persistant storage

Parameters:

keyStr -

Returns:

String value associated with key, or null if no key is found or an error occurs

getContextMap

public static BDBMap getContextMap(java.lang.String context)

Parameters:

context -

Returns:

singleton BDBMap for the context

getTimestampForId

public static java.lang.String getTimestampForId(java.lang.String context,
                                                 java.lang.String ip)

return the timestamp associated with the identifier argument, or now if no value is associated or something goes wrong.

Parameters:

context -

ip -

Returns:

timestamp string value

addTimestampForId

public static void addTimestampForId(java.lang.String context,
                                     java.lang.String ip,
                                     java.lang.String time)

associate timestamp time with idenfier ip persistantly

Parameters:

context -

ip -

time -