GenericEntityReferenceFieldBridge.java

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

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

import fr.openwide.core.jpa.business.generic.model.GenericEntityReference;

public class GenericEntityReferenceFieldBridge implements FieldBridge, StringBridge {
	
	@Override
	public String objectToString(Object object) {
		if (object == null) {
			return null;
		}
		if (!(object instanceof GenericEntityReference)) {
			throw new IllegalArgumentException("This FieldBridge only supports GenericEntityReference properties.");
		}
		GenericEntityReference<?, ?> entityReference = (GenericEntityReference<?, ?>) object;
		Object id = entityReference.getId();
		Class<?> clazz = entityReference.getType();
		if (clazz == null) {
			return null;
		} else {
			return clazz.getCanonicalName() + "|" + id.toString();
		}
	}
	
	@Override
	public void set(String name, Object value, Document document, LuceneOptions luceneOptions) {
		if (value == null) {
			return;
		}
		luceneOptions.addFieldToDocument(name, objectToString(value), document);
	}

}