EDIT

/**

* Copyright (C) 2012 EDIT

* European Distributed Institute of Taxonomy

* http://www.e-taxonomy.eu

*

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.cdm.hibernate.search;

import java.util.Collection;

import java.util.Map;

import org.apache.lucene.document.Document;

import org.apache.lucene.document.Field;

import org.apache.lucene.document.TextField;

import org.hibernate.search.bridge.FieldBridge;

import org.hibernate.search.bridge.LuceneOptions;

import eu.etaxonomy.cdm.model.common.Language;

import eu.etaxonomy.cdm.model.common.LanguageString;

/**

 * Multilingual text representations, for example in TextData, are modeled in the cdm

 * as <code>Map<Language, LanguageString> multilanguageText</code>. This FieldBridge implementation

 * stores each of these language specific strings in the Lucene document in two fields, whereas {name}

 * is set by the name parameter and will be most probably 'text' or 'multilanguageText':

 * <ol>

 * <li><code>{name}.ALL</code>: this field contains all strings regardless of the language they are associated with.</li>

 * <li></li><code>{name}.{language-label}</code>: contains the strings of the specific language indicated by {language-label}.

 * </ol>

 *

 * @author Andreas Kohlbecker

 \* @since Jun 4, 2012

 *

 */

public class MultilanguageTextFieldBridge implements FieldBridge {

    @Override

    public void set(String name, Object value, Document document, LuceneOptions luceneOptions) {

        // value should be the Map<Language, LanguageString>

        @SuppressWarnings("unchecked")

        Collection<LanguageString> langStrings = ((Map<Language, LanguageString>)value).values();

        for(LanguageString languageString : langStrings){

            if(languageString.getText() == null) {

                // TextField.value cannot be null

                continue;

            }

            Field allField = new TextField(name + ".ALL",

                    languageString.getText(),

                    luceneOptions.getStore());

            allField.setBoost(luceneOptions.getBoost());

            document.add(allField);

            Field langField = new TextField(name + "." + languageString.getLanguage().getUuid(),

                    languageString.getText(),

                    luceneOptions.getStore()

                    );

            allField.setBoost(luceneOptions.getBoost());

            document.add(langField);

        }

    }

}