org.apache.lucene.util
Class Version

java.lang.Object
  org.apache.lucene.util.Parameter
      org.apache.lucene.util.Version

All Implemented Interfaces:

Serializable

public final class Version
extends Parameter
implements Serializable

Use by certain classes to match version compatibility across releases of Lucene.

WARNING: When changing the version parameter that you supply to components in Lucene, do not simply change the version at search-time, but instead also adjust your indexing code to match, and re-index.

See Also:

Serialized Form

Field Summary

static Version	LUCENE_20 Match settings and bugs in Lucene's 2.0 release.
static Version	LUCENE_21 Match settings and bugs in Lucene's 2.1 release.
static Version	LUCENE_22 Match settings and bugs in Lucene's 2.2 release.
static Version	LUCENE_23 Match settings and bugs in Lucene's 2.3 release.
static Version	LUCENE_24 Match settings and bugs in Lucene's 2.4 release.
static Version	LUCENE_29 Match settings and bugs in Lucene's 2.9 release.
static Version	LUCENE_CURRENT Deprecated. Use an actual version instead.

Constructor Summary

Version(String name, int v)

Method Summary

boolean

onOrAfter(Version other)

Methods inherited from class org.apache.lucene.util.Parameter

readResolve, toString

Methods inherited from class java.lang.Object

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

Field Detail

LUCENE_CURRENT

public static final Version LUCENE_CURRENT

Deprecated. Use an actual version instead.

WARNING: if you use this setting, and then upgrade to a newer release of Lucene, sizable changes may happen. If backwards compatibility is important then you should instead explicitly specify an actual version.

If you use this constant then you may need to re-index all of your documents when upgrading Lucene, as the way text is indexed may have changed. Additionally, you may need to re-test your entire application to ensure it behaves as expected, as some defaults may have changed and may break functionality in your application.

LUCENE_20

public static final Version LUCENE_20

Match settings and bugs in Lucene's 2.0 release.

LUCENE_21

public static final Version LUCENE_21

Match settings and bugs in Lucene's 2.1 release.

LUCENE_22

public static final Version LUCENE_22

Match settings and bugs in Lucene's 2.2 release.

LUCENE_23

public static final Version LUCENE_23

Match settings and bugs in Lucene's 2.3 release.

LUCENE_24

public static final Version LUCENE_24

Match settings and bugs in Lucene's 2.4 release.

LUCENE_29

public static final Version LUCENE_29

Match settings and bugs in Lucene's 2.9 release.

Use this to get the latest & greatest settings, bug fixes, etc, for Lucene.

Constructor Detail

Version

public Version(String name,
               int v)

Method Detail

onOrAfter

public boolean onOrAfter(Version other)