Github user xristy commented on a diff in the pull request:
https://github.com/apache/jena/pull/436#discussion_r195745831
--- Diff:
jena-text/src/main/java/org/apache/jena/query/text/analyzer/QueryMultilingualAnalyzer.java
---
@@ -0,0 +1,75 @@
+/**
+ * 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.analyzer ;
+
+import org.apache.lucene.analysis.Analyzer ;
+import org.apache.lucene.analysis.DelegatingAnalyzerWrapper;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Lucene Analyzer implementation that delegates to a language-specific
+ * Analyzer based on a field name suffix: e.g. field="label_en" will use
+ * an EnglishAnalyzer.
+ */
+
+public class QueryMultilingualAnalyzer extends DelegatingAnalyzerWrapper {
+ private static Logger log =
LoggerFactory.getLogger(QueryMultilingualAnalyzer.class);
+ private Analyzer defaultAnalyzer;
+ private String langTag;
+
+ public QueryMultilingualAnalyzer(Analyzer defaultAnalyzer) {
+ super(PER_FIELD_REUSE_STRATEGY);
+ this.defaultAnalyzer = defaultAnalyzer;
+ this.langTag = null;
+ }
+
+ public QueryMultilingualAnalyzer(Analyzer defaultAnalyzer, String
tag) {
+ super(PER_FIELD_REUSE_STRATEGY);
+ this.defaultAnalyzer = defaultAnalyzer;
+ this.langTag = tag;
+ }
+
+ @Override
+ /**
+ * The analyzer corresponding to the langTag supplied at
instantiation
+ * is used to retrieve the analyzer to use regardless of the tag
on the
+ * fieldName. If no langTag is supplied then the tag on fieldName
is
+ * used to retrieve the analyzer as with the MultilingualAnalyzer
+ *
+ * @param fieldName
+ * @return the analyzer to use in the search
+ */
+ protected Analyzer getWrappedAnalyzer(String fieldName) {
+ int idx = fieldName.lastIndexOf("_");
+ if (idx == -1) { // not language-specific, e.g. "label"
+ return defaultAnalyzer;
+ }
+ String lang = langTag != null ? langTag :
fieldName.substring(idx+1);
+ Analyzer analyzer = Util.getLocalizedAnalyzer(lang);
+ analyzer = analyzer != null ? analyzer : defaultAnalyzer;
--- End diff --
done. I need to become more familiar with ``StringUtils`` and
``ObjectUtils``
---
