package org.infinispan.query.clustered.commandworkers;
import java.io.IOException;
import org.hibernate.search.query.engine.spi.DocumentExtractor;
import org.infinispan.Cache;
import org.infinispan.query.backend.KeyTransformationHandler;
import org.infinispan.query.logging.Log;
import org.infinispan.util.logging.LogFactory;
/**
* QueryExtractorUtil.
*
* Utility to extract the cache key of a DocumentExtractor.
*
* @author Israel Lacerra <israeldl@gmail.com>
* @author Marko Luksa
* @since 5.1
*/
public class QueryExtractorUtil {
private static final Log log = LogFactory.getLog(QueryExtractorUtil.class, Log.class);
private QueryExtractorUtil() {
}
public static Object extractKey(DocumentExtractor extractor, Cache<?, ?> cache, KeyTransformationHandler keyTransformationHandler, int docIndex) {
String bufferDocumentId;
try {
bufferDocumentId = (String) extractor.extract(docIndex).getId();
} catch (IOException e) {
log.error("Error while extracting key...", e);
return null;
}
Object key = keyTransformationHandler.stringToKey(bufferDocumentId, cache
.getAdvancedCache().getClassLoader());
return key;
}
}