NullEncodingGenericEntityReferenceFieldBridge.java

package fr.openwide.core.jpa.search.bridge;

import org.apache.lucene.document.Document;
import org.hibernate.search.bridge.LuceneOptions;

public class NullEncodingGenericEntityReferenceFieldBridge extends GenericEntityReferenceFieldBridge {

	public static final String NULL_TOKEN = "_NULL_";

	@Override
	public String objectToString(Object object) {
		String result = super.objectToString(object);
		if (result == null) {
			return NULL_TOKEN;
		}
		return result;
	}
	
	@Override
	public void set(String name, Object value, Document document, LuceneOptions luceneOptions) {
		luceneOptions.addFieldToDocument(name, objectToString(value), document);
	}
}