public static DirectoryProvider<?> createDirectoryProvider(
String directoryProviderName, Properties indexProps, WorkerBuildContext context) {
String className = indexProps.getProperty("directory_provider", "");
String maybeShortCut = className.toLowerCase();
DirectoryProvider<?> provider;
// try and use the built-in shortcuts before loading the provider as a fully qualified class
// name
if (defaultProviderClasses.containsKey(maybeShortCut)) {
String fullClassName = defaultProviderClasses.get(maybeShortCut);
provider =
ClassLoaderHelper.instanceFromName(
DirectoryProvider.class,
fullClassName,
DirectoryProviderFactory.class,
"directory provider");
} else {
provider =
ClassLoaderHelper.instanceFromName(
DirectoryProvider.class,
className,
DirectoryProviderFactory.class,
"directory provider");
}
try {
provider.initialize(directoryProviderName, indexProps, context);
} catch (Exception e) {
throw new SearchException(
"Unable to initialize directory provider: " + directoryProviderName, e);
}
return provider;
}
@Override
public IndexReader openIndexReader() {
// #getDirectory must be invoked each time as the underlying directory might "dance" as in
// org.hibernate.search.store.impl.FSSlaveDirectoryProvider
Directory directory = directoryProvider.getDirectory();
try {
return IndexReader.open(directory, true);
} catch (IOException e) {
throw new SearchException("Could not open index \"" + indexName + "\"", e);
}
}