org.apache.lucene.util
Enum Version

java.lang.Object
  java.lang.Enum<Version>
      org.apache.lucene.util.Version

All Implemented Interfaces:

Serializable, Comparable<Version>

public enum Version
extends Enum<Version>

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.

Enum Constant Summary

LUCENE_20
Match settings and bugs in Lucene's 2.0 release.

LUCENE_21
Match settings and bugs in Lucene's 2.1 release.

LUCENE_22
Match settings and bugs in Lucene's 2.2 release.

LUCENE_23
Match settings and bugs in Lucene's 2.3 release.

LUCENE_24
Match settings and bugs in Lucene's 2.4 release.

LUCENE_29
Match settings and bugs in Lucene's 2.9 release.

LUCENE_30
Match settings and bugs in Lucene's 3.0 release.

LUCENE_CURRENT
Deprecated. Use an actual version instead.

Method Summary

boolean	onOrAfter(Version other)
static Version	valueOf(String name) Returns the enum constant of this type with the specified name.
static Version[]	values() Returns an array containing the constants of this enum type, in the order they're declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

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.

LUCENE_30

public static final Version LUCENE_30

Match settings and bugs in Lucene's 3.0 release.

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

LUCENE_CURRENT

@Deprecated
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.

Method Detail

values

public static final Version[] values()

Returns an array containing the constants of this enum type, in the order they're declared. This method may be used to iterate over the constants as follows:

for(Version c : Version.values())
        System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they're declared

valueOf

public static Version valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

onOrAfter

public boolean onOrAfter(Version other)