SOLR-2839: add alternative language detection impl

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1184754 13f79535-47bb-0310-9956-ffa450edef68

dev-tools/eclipse/dot.classpath

@@ -33,12 +33,12 @@
 	<classpathentry kind="src" path="modules/analysis/stempel/src/resources"/>
 	<classpathentry kind="src" path="modules/analysis/stempel/src/test"/>
 	<classpathentry kind="src" path="modules/analysis/morfologik/src/java"/>
-	<classpathentry kind="src" path="modules/analysis/morfologik/src/test"/>	
+	<classpathentry kind="src" path="modules/analysis/morfologik/src/test"/>
 	<classpathentry kind="src" path="modules/benchmark/src/java"/>
 	<classpathentry kind="src" path="modules/benchmark/src/test"/>
 	<classpathentry kind="src" path="modules/facet/src/java"/>
- 	<classpathentry kind="src" path="modules/facet/src/examples"/>
+	<classpathentry kind="src" path="modules/facet/src/examples"/>
- 	<classpathentry kind="src" path="modules/facet/src/test"/>
+	<classpathentry kind="src" path="modules/facet/src/test"/>
 	<classpathentry kind="src" path="modules/grouping/src/java"/>
 	<classpathentry kind="src" path="modules/grouping/src/test"/>
 	<classpathentry kind="src" path="modules/join/src/java"/>
@@ -71,18 +71,19 @@
 	<classpathentry kind="src" path="solr/contrib/extraction/src/java"/>
 	<classpathentry kind="src" path="solr/contrib/extraction/src/test"/>
 	<classpathentry kind="src" path="solr/contrib/extraction/src/test-files"/>
-  <classpathentry kind="src" path="solr/contrib/langid/src/java"/>
+	<classpathentry kind="src" path="solr/contrib/langid/src/java"/>
-  <classpathentry kind="src" path="solr/contrib/langid/src/test"/>
+	<classpathentry kind="src" path="solr/contrib/langid/src/test"/>
-  <classpathentry kind="src" path="solr/contrib/langid/src/test-files"/>
+	<classpathentry kind="src" path="solr/contrib/langid/src/test-files"/>
 	<classpathentry kind="src" path="solr/contrib/uima/src/java"/>
 	<classpathentry kind="src" path="solr/contrib/uima/src/resources"/>
 	<classpathentry kind="src" path="solr/contrib/uima/src/test"/>
 	<classpathentry kind="src" path="solr/contrib/uima/src/test-files"/>
+	<classpathentry kind="src" path="solr/contrib/langid/src/resources"/>
 	<classpathentry kind="lib" path="lucene/lib/ant-1.7.1.jar"/>
 	<classpathentry kind="lib" path="lucene/lib/ant-junit-1.7.1.jar"/>
 	<classpathentry kind="lib" path="lucene/lib/junit-4.7.jar"/>
 	<classpathentry kind="lib" path="lucene/contrib/sandbox/lib/jakarta-regexp-1.4.jar"/>
-	<classpathentry kind="lib" path="modules/analysis/icu/lib/icu4j-4_8.jar"/>
+	<classpathentry kind="lib" path="modules/analysis/icu/lib/icu4j-4_8_1_1.jar"/>
 	<classpathentry kind="lib" path="modules/analysis/phonetic/lib/commons-codec-1.4.jar"/>
 	<classpathentry kind="lib" path="modules/analysis/morfologik/lib/morfologik-fsa-1.5.2.jar"/>
 	<classpathentry kind="lib" path="modules/analysis/morfologik/lib/morfologik-polish-1.5.2.jar"/>
@@ -156,6 +157,8 @@
 	<classpathentry kind="lib" path="solr/contrib/uima/lib/uima-an-tagger-2.3.1.jar"/>
 	<classpathentry kind="lib" path="solr/contrib/uima/lib/uima-an-wst-2.3.1.jar"/>
 	<classpathentry kind="lib" path="solr/contrib/uima/lib/uimaj-core-2.3.1.jar"/>
+	<classpathentry kind="lib" path="solr/contrib/langid/lib/langdetect-r111.jar"/>
+	<classpathentry kind="lib" path="solr/contrib/langid/lib/jsonic-1.2.0.jar"/>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
 	<classpathentry kind="output" path="bin"/>
 </classpath>

solr/NOTICE.txt

@@ -253,6 +253,18 @@ Copyright 2004 Sun Microsystems, Inc. (Rome JAR)
 
 Copyright 2002-2008 by John Cowan (TagSoup -- http://ccil.org/~cowan/XML/tagsoup/)
  
+=========================================================================
+==  Language Detection Notices                                         ==
+=========================================================================
+
+The following notices apply to the libraries in contrib/langid/lib:
+
+This product includes software developed by Cybozu Labs, Inc.
+(c)2010 All rights reserved by Cybozu Labs, Inc.
+http://code.google.com/p/language-detection/
+
+This product includes software developed by the Jsonic project:
+http://sourceforge.jp/projects/jsonic/
 
 =========================================================================
 ==     Carrot2 Notice                                                  ==

solr/contrib/langid/CHANGES.txt

@@ -13,3 +13,6 @@ Initial release.  See README.txt.
 
 * SOLR-1979: New contrib "langid". Adds language identification capabilities as an 
   Update Processor, using Tika's LanguageIdentifier (janhoy, Tommaso Teofili, gsingers)
+
+* SOLR-2839: Add alternative implementation supporting 53 languages, 
+  based on http://code.google.com/p/language-detection/ (rmuir)

solr/contrib/langid/build.xml

@@ -27,6 +27,7 @@
 
 	<path id="classpath">
     <fileset dir="../extraction/lib" includes="*.jar"/>
+    <fileset dir="lib" includes="*.jar"/>
     <path refid="solr.base.classpath"/>   
   </path>
 

solr/contrib/langid/lib/jsonic-1.2.0.jar

@@ -0,0 +1,2 @@
+AnyObjectId[09f9bec102d3d8368e10d30e178a429026abeec6] was removed in git history.
+Apache SVN contains full history.

solr/contrib/langid/lib/jsonic-LICENSE.txt

@@ -0,0 +1,201 @@
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solr/contrib/langid/lib/langdetect-LICENSE.txt

@@ -0,0 +1,13 @@
+(c)2010 All rights reserved by Cybozu Labs, Inc.
+
+   Licensed 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
+
+       <a href="http://www.apache.org/licenses/LICENSE-2.0">http://www.apache.org/licenses/LICENSE-2.0</a>
+
+   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.

solr/contrib/langid/lib/langdetect-r111.jar

@@ -0,0 +1,2 @@
+AnyObjectId[f0ca94dd3715141e7b3c31cda31cce8667769214] was removed in git history.
+Apache SVN contains full history.

solr/contrib/langid/src/java/org/apache/solr/update/processor/LangDetectLanguageIdentifierUpdateProcessor.java

@@ -0,0 +1,66 @@
+package org.apache.solr.update.processor;
+
+/**
+ * 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.
+ */
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import org.apache.solr.request.SolrQueryRequest;
+import org.apache.solr.response.SolrQueryResponse;
+
+import com.cybozu.labs.langdetect.Detector;
+import com.cybozu.labs.langdetect.DetectorFactory;
+import com.cybozu.labs.langdetect.LangDetectException;
+import com.cybozu.labs.langdetect.Language;
+
+/**
+ * Identifies the language of a set of input fields using http://code.google.com/p/language-detection
+ * <p>
+ * See <a href="http://wiki.apache.org/solr/LanguageDetection">http://wiki.apache.org/solr/LanguageDetection</a>
+ * @since 3.5
+ */
+public class LangDetectLanguageIdentifierUpdateProcessor extends LanguageIdentifierUpdateProcessor {
+  
+  public LangDetectLanguageIdentifierUpdateProcessor(SolrQueryRequest req, 
+      SolrQueryResponse rsp, UpdateRequestProcessor next) {
+    super(req, rsp, next);
+  }
+
+  @Override
+  protected List<DetectedLanguage> detectLanguage(String content) {
+    if (content.trim().length() == 0) { // to be consistent with the tika impl?
+      log.debug("No input text to detect language from, returning empty list");
+      return Collections.emptyList();
+    }
+    
+    try {
+      Detector detector = DetectorFactory.create();
+      detector.append(content);
+      ArrayList<Language> langlist = detector.getProbabilities();
+      ArrayList<DetectedLanguage> solrLangList = new ArrayList<DetectedLanguage>();
+      for (Language l: langlist) {
+        solrLangList.add(new DetectedLanguage(l.lang, l.prob));
+      }
+      return solrLangList;
+    } catch (LangDetectException e) {
+      log.debug("Could not determine language, returning empty list: ", e);
+      return Collections.emptyList();
+    }
+  }
+}

solr/contrib/langid/src/java/org/apache/solr/update/processor/LangDetectLanguageIdentifierUpdateProcessorFactory.java

@@ -0,0 +1,136 @@
+package org.apache.solr.update.processor;
+
+/**
+ * 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.
+ */
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.nio.charset.Charset;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.commons.io.IOUtils;
+import org.apache.solr.common.params.SolrParams;
+import org.apache.solr.common.util.NamedList;
+import org.apache.solr.core.SolrCore;
+import org.apache.solr.request.SolrQueryRequest;
+import org.apache.solr.response.SolrQueryResponse;
+import org.apache.solr.util.SolrPluginUtils;
+import org.apache.solr.util.plugin.SolrCoreAware;
+
+import com.cybozu.labs.langdetect.DetectorFactory;
+import com.cybozu.labs.langdetect.LangDetectException;
+
+/**
+ * Identifies the language of a set of input fields using 
+ * http://code.google.com/p/language-detection
+ * <p/>
+ * The UpdateProcessorChain config entry can take a number of parameters
+ * which may also be passed as HTTP parameters on the update request
+ * and override the defaults. Here is the simplest processor config possible:
+ * 
+ * <pre class="prettyprint" >
+ * &lt;processor class=&quot;org.apache.solr.update.processor.LangDetectLanguageIdentifierUpdateProcessorFactory&quot;&gt;
+ *   &lt;str name=&quot;langid.fl&quot;&gt;title,text&lt;/str&gt;
+ *   &lt;str name=&quot;langid.langField&quot;&gt;language_s&lt;/str&gt;
+ * &lt;/processor&gt;
+ * </pre>
+ * See <a href="http://wiki.apache.org/solr/LanguageDetection">http://wiki.apache.org/solr/LanguageDetection</a>
+ * @since 3.5
+ */
+public class LangDetectLanguageIdentifierUpdateProcessorFactory extends
+        UpdateRequestProcessorFactory implements SolrCoreAware, LangIdParams {
+
+  protected SolrParams defaults;
+  protected SolrParams appends;
+  protected SolrParams invariants;
+
+  @Override
+  public void inform(SolrCore core) {
+  }
+
+  /**
+   * The UpdateRequestProcessor may be initialized in solrconfig.xml similarly
+   * to a RequestHandler, with defaults, appends and invariants.
+   * @param args a NamedList with the configuration parameters 
+   */
+  @SuppressWarnings("rawtypes")
+  public void init( NamedList args )
+  {
+    try {
+      loadData();
+    } catch (Exception e) {
+      throw new RuntimeException("Couldn't load profile data, will return empty languages always!", e);
+    }
+    if (args != null) {
+      Object o;
+      o = args.get("defaults");
+      if (o != null && o instanceof NamedList) {
+        defaults = SolrParams.toSolrParams((NamedList) o);
+      } else {
+        defaults = SolrParams.toSolrParams(args);
+      }
+      o = args.get("appends");
+      if (o != null && o instanceof NamedList) {
+        appends = SolrParams.toSolrParams((NamedList) o);
+      }
+      o = args.get("invariants");
+      if (o != null && o instanceof NamedList) {
+        invariants = SolrParams.toSolrParams((NamedList) o);
+      }
+    }
+  }
+
+  @Override
+  public UpdateRequestProcessor getInstance(SolrQueryRequest req,
+                                            SolrQueryResponse rsp, UpdateRequestProcessor next) {
+    // Process defaults, appends and invariants if we got a request
+    if(req != null) {
+      SolrPluginUtils.setDefaults(req, defaults, appends, invariants);
+    }
+    return new LangDetectLanguageIdentifierUpdateProcessor(req, rsp, next);
+  }
+  
+  
+  // DetectorFactory is totally global, so we only want to do this once... ever!!!
+  static boolean loaded;
+  
+  // profiles we will load from classpath
+  static final String languages[] = {
+    "af", "ar", "bg", "bn", "cs", "da", "de", "el", "en", "es", "et", "fa", "fi", "fr", "gu",
+    "he", "hi", "hr", "hu", "id", "it", "ja", "kn", "ko", "lt", "lv", "mk", "ml", "mr", "ne",
+    "nl", "no", "pa", "pl", "pt", "ro", "ru", "sk", "sl", "so", "sq", "sv", "sw", "ta", "te",
+    "th", "tl", "tr", "uk", "ur", "vi", "zh-cn", "zh-tw"
+  };
+
+  public static synchronized void loadData() throws IOException, LangDetectException {
+    if (loaded)
+      return;
+    loaded = true;
+    List<String> profileData = new ArrayList<String>();
+    Charset encoding = Charset.forName("UTF-8");
+    for (String language : languages) {
+      InputStream stream = LangDetectLanguageIdentifierUpdateProcessor.class.getResourceAsStream("langdetect-profiles/" + language);
+      BufferedReader reader = new BufferedReader(new InputStreamReader(stream, encoding));
+      profileData.add(new String(IOUtils.toCharArray(reader)));
+      reader.close();
+    }
+    DetectorFactory.loadProfile(profileData);
+  }
+}

solr/contrib/langid/src/java/org/apache/solr/update/processor/LanguageIdentifierUpdateProcessor.java

@@ -26,7 +26,6 @@ import org.apache.solr.request.SolrQueryRequest;
 import org.apache.solr.response.SolrQueryResponse;
 import org.apache.solr.schema.IndexSchema;
 import org.apache.solr.update.AddUpdateCommand;
-import org.apache.tika.language.LanguageIdentifier;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -40,15 +39,15 @@ import java.util.regex.Pattern;
 
 
 /**
- * Identifies the language of a set of input fields using Tika's
+ * Identifies the language of a set of input fields. 
- * LanguageIdentifier. Also supports mapping of field names based
+ * Also supports mapping of field names based
  * on detected language. 
- * The tika-core-x.y.jar must be on the classpath
  * <p>
  * See <a href="http://wiki.apache.org/solr/LanguageDetection">http://wiki.apache.org/solr/LanguageDetection</a>
  * @since 3.5
+ * @lucene.experimental
  */
-public class LanguageIdentifierUpdateProcessor extends UpdateRequestProcessor implements LangIdParams {
+public abstract class LanguageIdentifierUpdateProcessor extends UpdateRequestProcessor implements LangIdParams {
 
   protected final static Logger log = LoggerFactory
           .getLogger(LanguageIdentifierUpdateProcessor.class);
@@ -300,23 +299,7 @@ public class LanguageIdentifierUpdateProcessor extends UpdateRequestProcessor im
    * @param content The content to identify
    * @return List of detected language(s) according to RFC-3066
    */
-  protected List<DetectedLanguage> detectLanguage(String content) {
+  protected abstract List<DetectedLanguage> detectLanguage(String content);
-    List<DetectedLanguage> languages = new ArrayList<DetectedLanguage>();
-    if(content.trim().length() != 0) { 
-      LanguageIdentifier identifier = new LanguageIdentifier(content);
-      // FIXME: Hack - we get the distance from toString and calculate our own certainty score
-      Double distance = Double.parseDouble(tikaSimilarityPattern.matcher(identifier.toString()).replaceFirst("$1"));
-      // This formula gives: 0.02 => 0.8, 0.1 => 0.5 which is a better sweetspot than isReasonablyCertain()
-      Double certainty = 1 - (5 * distance); 
-      certainty = (certainty < 0) ? 0 : certainty;
-      DetectedLanguage language = new DetectedLanguage(identifier.getLanguage(), certainty);
-      languages.add(language);
-      log.debug("Language detected as "+language+" with a certainty of "+language.getCertainty()+" (Tika distance="+identifier.toString()+")");
-    } else {
-      log.debug("No input text to detect language from, returning empty list");
-    }
-    return languages;
-  }
 
   /**
    * Chooses a language based on the list of candidates detected 

solr/contrib/langid/src/java/org/apache/solr/update/processor/TikaLanguageIdentifierUpdateProcessor.java

@@ -0,0 +1,60 @@
+package org.apache.solr.update.processor;
+
+/**
+ * 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.
+ */
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.solr.request.SolrQueryRequest;
+import org.apache.solr.response.SolrQueryResponse;
+import org.apache.tika.language.LanguageIdentifier;
+
+/**
+ * Identifies the language of a set of input fields using Tika's
+ * LanguageIdentifier.
+ * The tika-core-x.y.jar must be on the classpath
+ * <p>
+ * See <a href="http://wiki.apache.org/solr/LanguageDetection">http://wiki.apache.org/solr/LanguageDetection</a>
+ * @since 3.5
+ */
+public class TikaLanguageIdentifierUpdateProcessor extends LanguageIdentifierUpdateProcessor {
+
+  public TikaLanguageIdentifierUpdateProcessor(SolrQueryRequest req,
+      SolrQueryResponse rsp, UpdateRequestProcessor next) {
+    super(req, rsp, next);
+  }
+  
+  @Override
+  protected List<DetectedLanguage> detectLanguage(String content) {
+    List<DetectedLanguage> languages = new ArrayList<DetectedLanguage>();
+    if(content.trim().length() != 0) { 
+      LanguageIdentifier identifier = new LanguageIdentifier(content);
+      // FIXME: Hack - we get the distance from toString and calculate our own certainty score
+      Double distance = Double.parseDouble(tikaSimilarityPattern.matcher(identifier.toString()).replaceFirst("$1"));
+      // This formula gives: 0.02 => 0.8, 0.1 => 0.5 which is a better sweetspot than isReasonablyCertain()
+      Double certainty = 1 - (5 * distance); 
+      certainty = (certainty < 0) ? 0 : certainty;
+      DetectedLanguage language = new DetectedLanguage(identifier.getLanguage(), certainty);
+      languages.add(language);
+      log.debug("Language detected as "+language+" with a certainty of "+language.getCertainty()+" (Tika distance="+identifier.toString()+")");
+    } else {
+      log.debug("No input text to detect language from, returning empty list");
+    }
+    return languages;
+  }
+}

solr/contrib/langid/src/java/org/apache/solr/update/processor/TikaLanguageIdentifierUpdateProcessorFactory.java

@@ -34,7 +34,7 @@ import org.apache.solr.util.plugin.SolrCoreAware;
  * and override the defaults. Here is the simplest processor config possible:
  * 
  * <pre class="prettyprint" >
- * &lt;processor class=&quot;org.apache.solr.update.processor.LanguageIdentifierUpdateProcessorFactory&quot;&gt;
+ * &lt;processor class=&quot;org.apache.solr.update.processor.TikaLanguageIdentifierUpdateProcessorFactory&quot;&gt;
  *   &lt;str name=&quot;langid.fl&quot;&gt;title,text&lt;/str&gt;
  *   &lt;str name=&quot;langid.langField&quot;&gt;language_s&lt;/str&gt;
  * &lt;/processor&gt;
@@ -42,7 +42,7 @@ import org.apache.solr.util.plugin.SolrCoreAware;
  * See <a href="http://wiki.apache.org/solr/LanguageDetection">http://wiki.apache.org/solr/LanguageDetection</a>
  * @since 3.5
  */
-public class LanguageIdentifierUpdateProcessorFactory extends
+public class TikaLanguageIdentifierUpdateProcessorFactory extends
         UpdateRequestProcessorFactory implements SolrCoreAware, LangIdParams {
 
   protected SolrParams defaults;
@@ -87,7 +87,7 @@ public class LanguageIdentifierUpdateProcessorFactory extends
     if(req != null) {
       SolrPluginUtils.setDefaults(req, defaults, appends, invariants);
     }
-    return new LanguageIdentifierUpdateProcessor(req, rsp, next);
+    return new TikaLanguageIdentifierUpdateProcessor(req, rsp, next);
   }
 
 

solr/contrib/langid/src/test-files/langid/solr/conf/solrconfig-languageidentifier.xml

@@ -62,7 +62,24 @@
   </requestHandler>  
 
   <updateRequestProcessorChain name="lang_id">
-		<processor class="org.apache.solr.update.processor.LanguageIdentifierUpdateProcessorFactory">
+		<processor class="org.apache.solr.update.processor.TikaLanguageIdentifierUpdateProcessorFactory">
+	    <!-- Can take defaults, invariants and appends just like req handlers-->
+	    <lst name="defaults">
+	      <bool name="langid">true</bool>
+	      <str name="langid.fl">name,subject</str>
+	      <bool name="langid.map">true</bool>
+	      <str name="langid.langField">language_s</str>
+	      <str name="langid.langsField">language_sm</str>
+	      <str name="langid.map.lcmap">th:thai</str>
+	      <float name="threshold">0.5</float>
+	      <str name="langid.fallback">fallback</str>
+	    </lst>
+		</processor>
+    <processor class="solr.RunUpdateProcessorFactory" />
+  </updateRequestProcessorChain>
+  
+    <updateRequestProcessorChain name="lang_id_alt">
+		<processor class="org.apache.solr.update.processor.LangDetectLanguageIdentifierUpdateProcessorFactory">
 	    <!-- Can take defaults, invariants and appends just like req handlers-->
 	    <lst name="defaults">
 	      <bool name="langid">true</bool>

solr/contrib/langid/src/test/org/apache/solr/update/processor/LangDetectLanguageIdentifierUpdateProcessorFactoryTest.java

@@ -0,0 +1,62 @@
+package org.apache.solr.update.processor;
+
+/**
+ * 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.
+ */
+
+import org.apache.solr.common.SolrInputDocument;
+import org.apache.solr.common.params.ModifiableSolrParams;
+import org.junit.Test;
+
+public class LangDetectLanguageIdentifierUpdateProcessorFactoryTest extends LanguageIdentifierUpdateProcessorFactoryTestCase {
+  @Override
+  protected LanguageIdentifierUpdateProcessor createLangIdProcessor(ModifiableSolrParams parameters) throws Exception {
+    return new LangDetectLanguageIdentifierUpdateProcessor(_parser.buildRequestFrom(null, parameters, null), resp, null);
+  }
+  
+  // this one actually works better it seems with short docs
+  @Override
+  protected SolrInputDocument tooShortDoc() {
+    SolrInputDocument doc = new SolrInputDocument();
+    doc.addField("text", "");
+    return doc;
+  }
+  
+  /* we don't return 'un' for the super-short one (this detector things hungarian?).
+   * replace this with japanese
+   */
+  @Test @Override
+  public void testLangIdGlobal() throws Exception {
+    parameters = new ModifiableSolrParams();
+    parameters.add("langid.fl", "name,subject");
+    parameters.add("langid.langField", "language_s");
+    parameters.add("langid.fallback", "un");
+    liProcessor = createLangIdProcessor(parameters);
+    
+    assertLang("no", "id", "1no", "name", "Lucene", "subject", "Lucene er et fri/åpen kildekode programvarebibliotek for informasjonsgjenfinning, opprinnelig utviklet i programmeringsspråket Java av Doug Cutting. Lucene støttes av Apache Software Foundation og utgis under Apache-lisensen.");
+    assertLang("en", "id", "2en", "name", "Lucene", "subject", "Apache Lucene is a free/open source information retrieval software library, originally created in Java by Doug Cutting. It is supported by the Apache Software Foundation and is released under the Apache Software License.");
+    assertLang("sv", "id", "3sv", "name", "Maven", "subject", "Apache Maven är ett verktyg utvecklat av Apache Software Foundation och används inom systemutveckling av datorprogram i programspråket Java. Maven används för att automatiskt paketera (bygga) programfilerna till en distribuerbar enhet. Maven används inom samma område som Apache Ant men dess byggfiler är deklarativa till skillnad ifrån Ants skriptbaserade.");
+    assertLang("es", "id", "4es", "name", "Lucene", "subject", "Lucene es un API de código abierto para recuperación de información, originalmente implementada en Java por Doug Cutting. Está apoyado por el Apache Software Foundation y se distribuye bajo la Apache Software License. Lucene tiene versiones para otros lenguajes incluyendo Delphi, Perl, C#, C++, Python, Ruby y PHP.");
+    assertLang("ja", "id", "5ja", "name", "Japanese", "subject", "日本語（にほんご、にっぽんご）は主として、日本で使用されてきた言語である。日本国は法令上、公用語を明記していないが、事実上の公用語となっており、学校教育の「国語」で教えられる。");
+    assertLang("th", "id", "6th", "name", "บทความคัดสรรเดือนนี้", "subject", "อันเนอลีส มารี อันเนอ ฟรังค์ หรือมักรู้จักในภาษาไทยว่า แอนน์ แฟรงค์ เป็นเด็กหญิงชาวยิว เกิดที่เมืองแฟรงก์เฟิร์ต ประเทศเยอรมนี เธอมีชื่อเสียงโด่งดังในฐานะผู้เขียนบันทึกประจำวันซึ่งต่อมาได้รับการตีพิมพ์เป็นหนังสือ บรรยายเหตุการณ์ขณะหลบซ่อนตัวจากการล่าชาวยิวในประเทศเนเธอร์แลนด์ ระหว่างที่ถูกเยอรมนีเข้าครอบครองในช่วงสงครามโลกครั้งที่สอง");
+    assertLang("ru", "id", "7ru", "name", "Lucene", "subject", "The Apache Lucene — это свободная библиотека для высокоскоростного полнотекстового поиска, написанная на Java. Может быть использована для поиска в интернете и других областях компьютерной лингвистики (аналитическая философия).");
+    assertLang("de", "id", "8de", "name", "Lucene", "subject", "Lucene ist ein Freie-Software-Projekt der Apache Software Foundation, das eine Suchsoftware erstellt. Durch die hohe Leistungsfähigkeit und Skalierbarkeit können die Lucene-Werkzeuge für beliebige Projektgrößen und Anforderungen eingesetzt werden. So setzt beispielsweise Wikipedia Lucene für die Volltextsuche ein. Zudem verwenden die beiden Desktop-Suchprogramme Beagle und Strigi eine C#- bzw. C++- Portierung von Lucene als Indexer.");
+    assertLang("fr", "id", "9fr", "name", "Lucene", "subject", "Lucene est un moteur de recherche libre écrit en Java qui permet d'indexer et de rechercher du texte. C'est un projet open source de la fondation Apache mis à disposition sous licence Apache. Il est également disponible pour les langages Ruby, Perl, C++, PHP.");
+    assertLang("nl", "id", "10nl", "name", "Lucene", "subject", "Lucene is een gratis open source, tekst gebaseerde information retrieval API van origine geschreven in Java door Doug Cutting. Het wordt ondersteund door de Apache Software Foundation en is vrijgegeven onder de Apache Software Licentie. Lucene is ook beschikbaar in andere programeertalen zoals Perl, C#, C++, Python, Ruby en PHP.");
+    assertLang("it", "id", "11it", "name", "Lucene", "subject", "Lucene è una API gratuita ed open source per il reperimento di informazioni inizialmente implementata in Java da Doug Cutting. È supportata dall'Apache Software Foundation ed è resa disponibile con l'Apache License. Lucene è stata successivamente reimplementata in Perl, C#, C++, Python, Ruby e PHP.");
+    assertLang("pt", "id", "12pt", "name", "Lucene", "subject", "Apache Lucene, ou simplesmente Lucene, é um software de busca e uma API de indexação de documentos, escrito na linguagem de programação Java. É um software de código aberto da Apache Software Foundation licenciado através da licença Apache.");
+  }
+}

solr/contrib/langid/src/test/org/apache/solr/update/processor/LanguageIdentifierUpdateProcessorFactoryTestCase.java

@@ -31,7 +31,7 @@ import org.apache.solr.request.SolrQueryRequest;
 import org.apache.solr.response.SolrQueryResponse;
 import org.apache.solr.servlet.SolrRequestParsers;
 
-public class LanguageIdentifierUpdateProcessorFactoryTest extends SolrTestCaseJ4 {
+public abstract class LanguageIdentifierUpdateProcessorFactoryTestCase extends SolrTestCaseJ4 {
 
   protected static SolrRequestParsers _parser;
   protected static SolrQueryRequest req;
@@ -189,17 +189,15 @@ public class LanguageIdentifierUpdateProcessorFactoryTest extends SolrTestCaseJ4
     return doc;
   }
 
-  private SolrInputDocument tooShortDoc() {
+  protected SolrInputDocument tooShortDoc() {
     SolrInputDocument doc = new SolrInputDocument();
     doc.addField("text", "This text is too short");
     return doc;
   }
 
-  private LanguageIdentifierUpdateProcessor createLangIdProcessor(ModifiableSolrParams parameters) throws Exception {
+  protected abstract LanguageIdentifierUpdateProcessor createLangIdProcessor(ModifiableSolrParams parameters) throws Exception;
-    return new LanguageIdentifierUpdateProcessor(_parser.buildRequestFrom(null, parameters, null), resp, null);
-  }
 
-  private void assertLang(String langCode, String... fieldsAndValues) throws Exception {
+  protected void assertLang(String langCode, String... fieldsAndValues) throws Exception {
     if(liProcessor == null)
       throw new Exception("Processor must be initialized before calling assertLang()");
     SolrInputDocument doc = sid(fieldsAndValues);

solr/contrib/langid/src/test/org/apache/solr/update/processor/TikaLanguageIdentifierUpdateProcessorFactoryTest.java

@@ -0,0 +1,27 @@
+package org.apache.solr.update.processor;
+
+/**
+ * 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.
+ */
+
+import org.apache.solr.common.params.ModifiableSolrParams;
+
+public class TikaLanguageIdentifierUpdateProcessorFactoryTest extends LanguageIdentifierUpdateProcessorFactoryTestCase {
+  @Override
+  protected LanguageIdentifierUpdateProcessor createLangIdProcessor(ModifiableSolrParams parameters) throws Exception {
+    return new TikaLanguageIdentifierUpdateProcessor(_parser.buildRequestFrom(null, parameters, null), resp, null);
+  }
+}

solr/example/solr/conf/solrconfig.xml

@@ -1541,7 +1541,7 @@
     -->
     <!--
      <updateRequestProcessorChain name="langid">
-       <processor class="org.apache.solr.update.processor.LanguageIdentifierUpdateProcessorFactory">
+       <processor class="org.apache.solr.update.processor.TikaLanguageIdentifierUpdateProcessorFactory">
          <str name="langid.fl">text,title,subject,description</str>
          <str name="langid.langField">language_s</str>
          <str name="langid.fallback">en</str>