Class TurLuceneUtils

java.lang.Object

com.viglet.turing.lucene.TurLuceneUtils

public final class TurLuceneUtils
extends Object

Static utilities for Lucene core (index directory) management. Mirrors TurSolrUtils for the Lucene engine.

In Lucene, a "core" corresponds to a directory on the filesystem that contains a Lucene index. The basePath is the value of TurSEInstance.endpointUrl for Lucene-backed SE instances.

Field management is intentionally a no-op: Lucene is schema-less and field types are tracked in the Turing JPA model (TurSNSiteField).

Since:

2026.1

Author:

Alexandre Oliveira

Method Summary

Modifier and Type	Method	Description
static void	addOrUpdateField(String basePath, String coreName, String fieldName)	No-op for Lucene: field types are tracked in the JPA model; the index itself is schema-less and accepts any field at index time.
static boolean	coreExists(String basePath, String coreName)	Returns true if the given core directory exists and is a directory.
static void	createCore(String basePath, String coreName)	Creates the directory for a Lucene core.
static void	deleteCore(String basePath, String coreName)	Deletes the directory (and all index files) for a Lucene core.
static void	deleteField(String basePath, String coreName, String fieldName)	No-op for Lucene: removing a field definition only requires updating the JPA model — existing indexed values are not retroactively removed.
static List<TurSECoreInfo>	listCores(String basePath)	Lists all direct sub-directories of basePath as cores.

Methods inherited from class Object

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

Method Details

createCore

public static void createCore(String basePath,
 String coreName)

Creates the directory for a Lucene core.

Parameters:

basePath - the root path of the Lucene SE instance (endpointUrl)

coreName - the core name (sub-directory)

deleteCore

public static void deleteCore(String basePath,
 String coreName)

Deletes the directory (and all index files) for a Lucene core.

Parameters:

basePath - the root path of the Lucene SE instance (endpointUrl)

coreName - the core name (sub-directory)

coreExists

public static boolean coreExists(String basePath,
 String coreName)

Returns true if the given core directory exists and is a directory.

listCores

public static List<TurSECoreInfo> listCores(String basePath)

Lists all direct sub-directories of basePath as cores. Returns basic info: name and approximate doc count (not exact without opening the index).

addOrUpdateField

public static void addOrUpdateField(String basePath,
 String coreName,
 String fieldName)

No-op for Lucene: field types are tracked in the JPA model; the index itself is schema-less and accepts any field at index time.

deleteField

public static void deleteField(String basePath,
 String coreName,
 String fieldName)

No-op for Lucene: removing a field definition only requires updating the JPA model — existing indexed values are not retroactively removed.