Make SimpleLinguistics simple again

- Remove SimpleLinguistics config and optional use of Optimaize
- Add Optimaize to OpennlpLinguistics; on by default and config to disable

4 files changed, 32 insertions, 104 deletions

diff --git a/linguistics/src/main/java/com/yahoo/language/opennlp/OpenNlpLinguistics.java b/linguistics/src/main/java/com/yahoo/language/opennlp/OpenNlpLinguistics.java
index 38181261d6a..1c7c71c00b6 100644
--- a/linguistics/src/main/java/com/yahoo/language/opennlp/OpenNlpLinguistics.java
+++ b/linguistics/src/main/java/com/yahoo/language/opennlp/OpenNlpLinguistics.java
@@ -1,14 +1,43 @@
 // Copyright 2018 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
 package com.yahoo.language.opennlp;
 
+import com.google.inject.Inject;
+import com.yahoo.language.detect.Detector;
 import com.yahoo.language.process.Tokenizer;
+import com.yahoo.language.simple.SimpleDetector;
 import com.yahoo.language.simple.SimpleLinguistics;
 
+/**
+ * Returns a linguistics implementation based on OpenNlp,
+ * and (optionally, default on) Optimaize for language detection.
+ */
 public class OpenNlpLinguistics extends SimpleLinguistics {
 
+    private final Detector detector;
+
+    public OpenNlpLinguistics() {
+        this(true);
+    }
+
+    @Inject
+    public OpenNlpLinguistics(OpennlpLinguisticsConfig config) {
+        this(config.detector().enableOptimaize());
+    }
+
+    public OpenNlpLinguistics(boolean enableOptimaize) {
+        this(enableOptimaize ? new OptimaizeDetector() : new SimpleDetector());
+    }
+
+    private OpenNlpLinguistics(Detector detector) {
+        this.detector = detector;
+    }
+
     @Override
     public Tokenizer getTokenizer() {
         return new OpenNlpTokenizer(getNormalizer(), getTransformer());
     }
 
+    @Override
+    public Detector getDetector() { return detector; }
+
 }
diff --git a/linguistics/src/main/java/com/yahoo/language/simple/SimpleDetector.java b/linguistics/src/main/java/com/yahoo/language/simple/SimpleDetector.java
index 1edfe5c804e..3de0eb3e997 100644
--- a/linguistics/src/main/java/com/yahoo/language/simple/SimpleDetector.java
+++ b/linguistics/src/main/java/com/yahoo/language/simple/SimpleDetector.java
@@ -1,26 +1,13 @@
 // Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
 package com.yahoo.language.simple;
 
-import com.google.common.base.Optional;
-import com.optimaize.langdetect.LanguageDetector;
-import com.optimaize.langdetect.LanguageDetectorBuilder;
-import com.optimaize.langdetect.i18n.LdLocale;
-import com.optimaize.langdetect.ngram.NgramExtractors;
-import com.optimaize.langdetect.profiles.LanguageProfile;
-import com.optimaize.langdetect.profiles.LanguageProfileReader;
-import com.optimaize.langdetect.text.CommonTextObjectFactories;
-import com.optimaize.langdetect.text.TextObject;
-import com.optimaize.langdetect.text.TextObjectFactory;
 import com.yahoo.language.Language;
 import com.yahoo.language.detect.Detection;
 import com.yahoo.language.detect.Detector;
 import com.yahoo.language.detect.Hint;
 import com.yahoo.text.Utf8;
 
-import java.io.IOException;
 import java.nio.ByteBuffer;
-import java.util.List;
-import java.util.Locale;
 
 /**
  * Includes functionality for determining the langCode from a sample or from the encoding.
@@ -38,55 +25,6 @@ import java.util.Locale;
  */
 public class SimpleDetector implements Detector {
 
-    static private Object initGuard = new Object();
-    static private TextObjectFactory textObjectFactory = null;
-    static private LanguageDetector languageDetector = null;
-
-    static private void initOptimaize (boolean useOptimaize) {
-        if (!useOptimaize) return;
-        synchronized (initGuard) {
-            if ((textObjectFactory != null) && (languageDetector != null)) return;
-
-            // origin: https://github.com/optimaize/language-detector
-            //load all languages:
-            List<LanguageProfile> languageProfiles;
-            try {
-                languageProfiles = new LanguageProfileReader().readAllBuiltIn();
-            } catch (IOException e) {
-                throw new RuntimeException(e);
-            }
-
-            //build language detector:
-            languageDetector = LanguageDetectorBuilder.create(NgramExtractors.standard())
-                    .withProfiles(languageProfiles)
-                    .build();
-
-            //create a text object factory
-            textObjectFactory = CommonTextObjectFactories.forDetectingOnLargeText();
-        }
-    }
-
-    private final boolean enableOptimaize;
-
-    /** @deprecated use OptimaizeDetector to enable optimaize */
-    @Deprecated
-    SimpleDetector(boolean enableOptimaize) {
-        initOptimaize(enableOptimaize);
-        this.enableOptimaize = enableOptimaize;
-
-    }
-
-    @SuppressWarnings("deprecation")
-    public SimpleDetector() {
-        this(true);
-    }
-
-    /** @deprecated use OptimaizeDetector to enable optimaize */
-    @Deprecated
-    public SimpleDetector(SimpleLinguisticsConfig.Detector detector) {
-        this(detector.enableOptimaize());
-    }
-
     @Override
     public Detection detect(byte[] input, int offset, int length, Hint hint) {
         return new Detection(guessLanguage(input, offset, length), guessEncoding(input), false);
@@ -172,26 +110,10 @@ public class SimpleDetector implements Detector {
                 return Language.THAI;
             }
         }
-        if (enableOptimaize && Language.UNKNOWN.equals(soFar)){
-            return detectLangOptimaize(input);
-        }
         // got to the end, so return the current best guess
         return soFar;
     }
 
-    private static Language detectLangOptimaize(String input) {
-        if (input == null || input.length() == 0) {
-            return Language.UNKNOWN;
-        }
-        TextObject textObject = textObjectFactory.forText(input);
-        Optional<LdLocale> lang = languageDetector.detect(textObject);
-        if (lang.isPresent()) {
-            String language = lang.get().getLanguage();
-            return Language.fromLocale(new Locale(language));
-        }
-        return Language.UNKNOWN;
-    }
-
     private boolean isTrailingOctet(byte i) {
         return ((i >>> 6) & 3) == 2;
     }
diff --git a/linguistics/src/main/java/com/yahoo/language/simple/SimpleLinguistics.java b/linguistics/src/main/java/com/yahoo/language/simple/SimpleLinguistics.java
index b7bf0215ca4..3c2e70b6677 100644
--- a/linguistics/src/main/java/com/yahoo/language/simple/SimpleLinguistics.java
+++ b/linguistics/src/main/java/com/yahoo/language/simple/SimpleLinguistics.java
@@ -17,7 +17,8 @@ import com.yahoo.language.process.Tokenizer;
 import com.yahoo.language.process.Transformer;
 
 /**
- * Factory of pure Java linguistic processor implementations.
+ * Factory of simple linguistic processor implementations.
+ * Useful for testing and english-only use cases.
  *
  * @author bratseth
  * @author bjorncs
@@ -34,26 +35,9 @@ public class SimpleLinguistics implements Linguistics {
     @Inject
     @SuppressWarnings("deprecation")
     public SimpleLinguistics() {
-        this(true);
-
-    }
-
-    /** @deprecated use OpenNlpLinguistics to get optimaize */
-    @Deprecated // OK
-    public SimpleLinguistics(boolean enableOptimaize) {
-        this(new SimpleDetector(enableOptimaize));
-    }
-
-    /** @deprecated use OpenNlpLinguistics to get optimaize */
-    @Deprecated // OK
-    public SimpleLinguistics(SimpleLinguisticsConfig config) {
-        this(new SimpleDetector(config.detector()));
-    }
-
-    private SimpleLinguistics(Detector detector) {
         this.normalizer = new SimpleNormalizer();
         this.transformer = new SimpleTransformer();
-        this.detector = detector;
+        this.detector = new SimpleDetector();
         this.characterClasses = new CharacterClasses();
         this.gramSplitter = new GramSplitter(characterClasses);
     }
diff --git a/linguistics/src/main/resources/configdefinitions/simple-linguistics.def b/linguistics/src/main/resources/configdefinitions/simple-linguistics.def
deleted file mode 100644
index 1ddca52c443..00000000000
--- a/linguistics/src/main/resources/configdefinitions/simple-linguistics.def
+++ /dev/null
@@ -1,7 +0,0 @@
-# Copyright 2018 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
-# Deprecated: Do not use
-namespace=language.simple
-
-# Enable Optimaize language detector
-detector.enableOptimaize bool  default=true
-