Github user rvesse commented on a diff in the pull request:
https://github.com/apache/jena/pull/52#discussion_r30788116
--- Diff:
jena-text/src/main/java/org/apache/jena/query/text/TextIndexLuceneMultilingual.java
---
@@ -0,0 +1,138 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.jena.query.text;
+
+import org.apache.jena.graph.Node;
+import org.apache.lucene.analysis.Analyzer;
+import org.apache.lucene.store.Directory;
+import org.apache.lucene.store.FSDirectory;
+import org.apache.lucene.store.RAMDirectory;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.*;
+
+public class TextIndexLuceneMultilingual implements TextIndex {
+
+ Hashtable<String, TextIndex> indexes;
+ private final EntityDefinition docDef;
+ private final Directory directory ;
+
+ public TextIndexLuceneMultilingual(Directory directory,
EntityDefinition def) {
+ this.directory = directory ;
+ this.docDef = def;
+ indexes = new Hashtable<>();
+
+ //default index created first. Localized index will be created on
the fly.
+ TextIndex index = new TextIndexLucene(directory, def, null, null);
+ indexes.put("default", index);
+ }
+
+ public Collection<TextIndex> getIndexes() {
+ return indexes.values();
+ }
+
+ TextIndex getIndex(String lang) {
+ lang = LuceneUtil.getISO2Language(lang);
+ if (lang == null)
+ lang = "default";
+
+ if (!indexes.containsKey(lang)) {
+ //dynamic creation of localized index
+ try {
+ Analyzer analyzer = LuceneUtil.createAnalyzer(lang);
+ if (analyzer != null) {
+ Directory langDir;
+ if (directory instanceof FSDirectory) {
+ File dir = ((FSDirectory)
directory).getDirectory();
+ File indexDirLang = new File(dir, lang);
+ langDir = FSDirectory.open(indexDirLang);
+ }
+ else
+ langDir = new RAMDirectory();
+ TextIndex index = new TextIndexLucene(langDir, docDef,
analyzer, null);
+ indexes.put(lang, index);
+ }
+ else
+ lang = "default";
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+ }
+
+ return indexes.get(lang);
+ }
+
+ @Override
+ public void prepareCommit() {
+ for (TextIndex index : indexes.values())
+ index.prepareCommit();
+ }
+
+ @Override
+ public void commit() {
+ for (TextIndex index : indexes.values())
+ index.commit();
+ }
+
+ @Override
+ public void rollback() {
+ for (TextIndex index : indexes.values())
+ index.rollback();
+ }
+
+ @Override
+ public void addEntity(Entity entity) {
+ String lang = entity.getLanguage();
+ getIndex(lang).addEntity(entity);
+ }
+
+ @Override
+ public void updateEntity(Entity entity) {
+ String lang = entity.getLanguage();
+ getIndex(lang).updateEntity(entity);
+ }
+
+ @Override
+ public Map<String, Node> get(String uri) {
+ return null;
--- End diff --
Are these methods not implemented for a reason?
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