remove DialogFlow-related classes

They are now moved to a different repository

Author: gdaniel

src/main/java/com/xatkit/core/recognition/IntentRecognitionProviderFactory.java

@@ -1,11 +1,8 @@
 package com.xatkit.core.recognition;
 
+import com.xatkit.core.EventDefinitionRegistry;
 import com.xatkit.core.XatkitBot;
 import com.xatkit.core.XatkitException;
-import com.xatkit.core.recognition.dialogflow.DialogFlowConfiguration;
-import com.xatkit.core.recognition.dialogflow.DialogFlowIntentRecognitionProvider;
-import com.xatkit.core.recognition.nlpjs.NlpjsConfiguration;
-import com.xatkit.core.recognition.nlpjs.NlpjsIntentRecognitionProvider;
 import com.xatkit.core.recognition.processor.InputPreProcessor;
 import com.xatkit.core.recognition.processor.IntentPostProcessor;
 import com.xatkit.core.recognition.regex.RegExIntentRecognitionProvider;
@@ -15,6 +12,7 @@
 import org.apache.commons.configuration2.Configuration;
 
 import javax.annotation.Nullable;
+import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
 import java.util.List;
 import java.util.stream.Collectors;
@@ -57,6 +55,17 @@ private IntentRecognitionProviderFactory() {
 
     public static final String DEFAULT_DATABASE_MODEL = DATABASE_MODEL_MAPDB;
 
+    /**
+     * The intent provider that will be used for this instance of Xatkit.
+     * <p>
+     * If this property isn't set the {@link RegExIntentRecognitionProvider} will be used.
+     * <p>
+     * The value of this property is the fully-qualified name of the {@link IntentRecognitionProvider} subclass to
+     * instantiate. Libraries providing such implementations typically provide a constant value for that in their
+     * configuration.
+     */
+    public static final String INTENT_PROVIDER_KEY = "xatkit.intent.provider";
+
     /**
      * Returns the {@link AbstractIntentRecognitionProvider} matching the provided {@code configuration}.
      * <p>
@@ -111,19 +120,19 @@ public static IntentRecognitionProvider getIntentRecognitionProvider(@NonNull Xa
 
         IntentRecognitionProvider provider;
 
-        if (baseConfiguration.containsKey(DialogFlowConfiguration.PROJECT_ID_KEY)) {
-            /*
-             * The provided configuration contains DialogFlow-related information.
-             */
-            provider = new DialogFlowIntentRecognitionProvider(xatkitBot.getEventDefinitionRegistry(),
-                    baseConfiguration,
-                    recognitionMonitor);
-        } else if (baseConfiguration.containsKey(NlpjsConfiguration.AGENT_ID_KEY)) {
-            /*
-             * The provided configuration contains NLP.js-related information.
-             */
-            provider = new NlpjsIntentRecognitionProvider(xatkitBot.getEventDefinitionRegistry(), baseConfiguration,
-                    recognitionMonitor);
+        if(baseConfiguration.containsKey(INTENT_PROVIDER_KEY)) {
+            try {
+                String providerClassName = baseConfiguration.getString(INTENT_PROVIDER_KEY);
+                Class<? extends IntentRecognitionProvider> providerClass = (Class<? extends IntentRecognitionProvider>) Class.forName(providerClassName);
+                Constructor<? extends IntentRecognitionProvider> providerConstructor =
+                        providerClass.getConstructor(EventDefinitionRegistry.class, Configuration.class,
+                                RecognitionMonitor.class);
+                provider = providerConstructor.newInstance(xatkitBot.getEventDefinitionRegistry(), baseConfiguration,
+                        recognitionMonitor);
+            } catch(ClassNotFoundException | NoSuchMethodException | InvocationTargetException | InstantiationException |
+                    IllegalAccessException e) {
+                throw new RuntimeException(e);
+            }
         } else {
             /*
              * The provided configuration does not contain any IntentRecognitionProvider information, returning a