/*
* Hibernate Search, full-text search for your domain model
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later
* See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
*/
package org.hibernate.search.engine.nulls.codec.impl;
import org.apache.lucene.document.Document;
import org.apache.lucene.index.IndexableField;
import org.apache.lucene.search.Query;
import org.hibernate.search.bridge.LuceneOptions;
import org.hibernate.search.bridge.spi.NullMarker;
/**
* Implementation of NullMarkerCodec which implements the no-op strategy
* of not writing anything to the index for null values.
*
* @author Sanne Grinovero
*/
public class NotEncodingCodec implements NullMarkerCodec {
public static final NotEncodingCodec SINGLETON = new NotEncodingCodec() {
@Override
public String toString() {
return getClass().getSimpleName() + ".SINGLETON";
}
};
private NotEncodingCodec() {
// do not instantiate, use the SINGLETON
}
@Override
public NullMarker getNullMarker() {
return null;
}
@Override
public void encodeNullValue(String fieldName, Document document, LuceneOptions luceneOptions) {
// no-op
}
@Override
public Query createNullMatchingQuery(String fieldName) {
// no-op
return null;
}
@Override
public boolean representsNullValue(IndexableField field) {
return field == null;
}
}