How to use org.hibernate.search.spi

/**
* Checks if an index exists for the given class. This is not intended to test whether the entity class is indexable
* (via annotations or programmatically).
*
* @param c the class to check
* @return true if an index exists, false otherwise
*/
boolean hasIndex(final Class<?> c) {
 return searchFactory.getIndexBindings().get(c) != null;
}

private Object unproxy(Object instance, InstanceInitializer objectInitializer) {
  if ( instance == null ) {
    return null;
  }
  return objectInitializer.unproxy( instance );
}

@Override
public void initialize(String directoryProviderName, Properties properties, BuildContext context) {
  this.indexName = directoryProviderName;
  this.properties = properties;
  this.serviceManager = context.getServiceManager();
}

public ExtendedSearchIntegrator create(SearchConfiguration configuration) {
  SearchIntegrator integrator = new SearchIntegratorBuilder().configuration( configuration ).buildSearchIntegrator();
  searchIntegrators.add( integrator );
  return integrator.unwrap( ExtendedSearchIntegrator.class );
}

@Override
public EntityIndexBinding getIndexBinding(IndexedTypeIdentifier entityType) {
  return indexBindingForEntities.get( entityType );
}

public ClusteredCacheQueryImpl(Query luceneQuery, SearchIntegrator searchFactory,
    ExecutorService asyncExecutor, AdvancedCache<?, ?> cache, KeyTransformationHandler keyTransformationHandler, Class<?>... classes) {
 super(luceneQuery, searchFactory, cache, keyTransformationHandler, null, classes);
 this.asyncExecutor = asyncExecutor;
 this.hSearchQuery = searchFactory.createHSQuery(luceneQuery, classes);
}

public BatchIndexingWorkspace(GridDialect gridDialect, SearchIntegrator search,
    SessionFactoryImplementor sessionFactory, IndexedTypeIdentifier indexedTypeIdentifier, CacheMode cacheMode, CountDownLatch endAllSignal,
    MassIndexerProgressMonitor monitor, BatchBackend backend, String tenantId) {
  this.gridDialect = gridDialect;
  this.indexedTypeIdentifier = indexedTypeIdentifier;
  this.tenantId = tenantId;
  this.searchIntegrator = search.unwrap( ExtendedSearchIntegrator.class );
  this.sessionFactory = sessionFactory;
  this.cacheMode = cacheMode;
  this.endAllSignal = endAllSignal;
  this.batchBackend = backend;
  this.monitor = monitor;
}

@Override
public String toString() {
  return type == null ? "null" : type.getName();
}

public Indexer(SearchIntegrator si, Dataset<? extends AbstractBookEntity> data) {
  this.worker = si.getWorker();
  this.dataset = data;
}

@Override
public IndexedTypeSet getIndexedTypeIdentifiers() {
  return indexBindingForEntities.keySet();
}

public JGroupsMasterMessageListener(BuildContext context, NodeSelectorService masterNodeSelector, LuceneWorkSerializer luceneWorkSerializer) {
  this.integrator = context.getUninitializedSearchIntegrator();
  this.selector = masterNodeSelector;
  this.luceneWorkSerializer = luceneWorkSerializer;
}

private void detectIndexNamesCollisions(Collection<IndexManager> indexManagers) {
  Map<String, Set<String>> indexNames = collectIndexNames( indexManagers );
  validateIndexNames( indexNames );
}

/**
* Checks if an index exists for the given class. This is not intended to test whether the entity class is indexable
* (via annotations or programmatically).
*
* @param c the class to check
* @return true if an index exists, false otherwise
*/
boolean hasIndex(final Class<?> c) {
 return searchFactory.getIndexBindings().get(c) != null;
}

@Override
public void initialize(String directoryProviderName, Properties properties, BuildContext context) {
  this.indexName = directoryProviderName;
  this.properties = properties;
  this.serviceManager = context.getServiceManager();
}

@Override
public void afterDeserialise(SearchIntegrator extendedIntegrator) {
  this.extendedIntegrator = extendedIntegrator.unwrap( ExtendedSearchIntegrator.class );
}

private Object unproxy(Object instance, InstanceInitializer objectInitializer) {
  if ( instance == null ) {
    return null;
  }
  return objectInitializer.unproxy( instance );
}

@Override
public IndexedFieldProvider<Class<?>> getIndexedFieldProvider() {
 return type -> {
   EntityIndexBinding entityIndexBinding = searchFactory.getIndexBindings().get(type);
   if (entityIndexBinding == null) {
    return IndexedFieldProvider.NO_INDEXING;
   }
   return new HibernateSearchFieldIndexingMetadata(entityIndexBinding);
 };
}

@Override
public void start(Properties properties, BuildContext context) {
  this.serviceManager = context.getServiceManager();
}

@Override
public void start(Properties properties, BuildContext context) {
  this.serviceManager = context.getServiceManager();
}

@Override
public void start(Properties properties, BuildContext context) {
  this.serviceManager = context.getServiceManager();
}