org.apache.jackrabbit.core.query.lucene

Class IndexFormatVersion

java.lang.Object

org.apache.jackrabbit.core.query.lucene.IndexFormatVersion

public class IndexFormatVersion
extends Object

This class indicates the lucene index format that is used.

• Version 1 is the initial index format, which is used for Jackrabbit releases 1.0 to 1.3.x. Unless a re-index happens upgraded Jackrabbit instances will still use this version.
• Version 2 is the index format introduced with Jackrabbit 1.4.x. It adds a PROPERTIES_SET field which contains all property names of a node. This speeds up queries that check the existence of a property.
• Version 3 is the index format introduced with Jackrabbit 1.5.x. It adds support for length and local name queries using the newly added fields PROPERTY_LENGTHS, LOCAL_NAME and NAMESPACE_URI. Furthermore a Payload is added to PROPERTIES fields to indicate the property type.

Please note that existing indexes are not automatically upgraded to a newer version! If you want to take advantage of a certain 'feature' in an index format version you need to re-index the repository.

Field Summary

Fields

Modifier and Type	Field and Description
static IndexFormatVersion	V1 V1 is the index format for Jackrabbit releases 1.0 to 1.3.x.
static IndexFormatVersion	V2 V2 is the index format for Jackrabbit releases 1.4.x
static IndexFormatVersion	V3 V3 is the index format for Jackrabbit releases >= 1.5

Method Summary

Methods

Modifier and Type	Method and Description
int	getVersion() Returns the index format version
static IndexFormatVersion	getVersion(org.apache.lucene.index.IndexReader indexReader)
boolean	isAtLeast(IndexFormatVersion version) Returns true if this version is at least as high as the given version.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

V1

public static final IndexFormatVersion V1

V1 is the index format for Jackrabbit releases 1.0 to 1.3.x.

V2

public static final IndexFormatVersion V2

V2 is the index format for Jackrabbit releases 1.4.x

V3

public static final IndexFormatVersion V3

V3 is the index format for Jackrabbit releases >= 1.5

Method Detail

getVersion

public int getVersion()

Returns the index format version

Returns:

the index format version.

isAtLeast

public boolean isAtLeast(IndexFormatVersion version)

Returns true if this version is at least as high as the given version.

Parameters:

version - the other version to compare.

Returns:

true if this version is at least as high as the provided; false otherwise.

toString

public String toString()

Overrides:

toString in class Object

Returns:

a string representation of this index format version.

getVersion

public static IndexFormatVersion getVersion(org.apache.lucene.index.IndexReader indexReader)

Returns:

the index format version of the index used by the given index reader.