stanford.patch

Index: src/main/java/com/handson/sentiment/nlp/SentimentAnalyzer.java
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
diff --git a/src/main/java/com/handson/sentiment/nlp/SentimentAnalyzer.java b/src/main/java/com/handson/sentiment/nlp/SentimentAnalyzer.java
new file mode 100644
--- /dev/null	(date 1644440678059)
+++ b/src/main/java/com/handson/sentiment/nlp/SentimentAnalyzer.java	(date 1644440678059)
@@ -0,0 +1,44 @@
+package com.handson.sentiment.nlp;
+
+import edu.stanford.nlp.ling.CoreAnnotations;
+import edu.stanford.nlp.pipeline.Annotation;
+import edu.stanford.nlp.pipeline.StanfordCoreNLP;
+import edu.stanford.nlp.sentiment.SentimentCoreAnnotations;
+import edu.stanford.nlp.sentiment.SentimentCoreAnnotations.SentimentClass;
+import edu.stanford.nlp.util.CoreMap;
+import org.springframework.stereotype.Service;
+
+import javax.annotation.PostConstruct;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Properties;
+
+@Service
+public class SentimentAnalyzer {
+    StanfordCoreNLP nlp;
+    Map<String, Double> sentimentValues = new HashMap<>();
+
+    @PostConstruct
+    public void init() {
+        Properties nlpProps = new Properties();
+        nlpProps.put("annotators", "tokenize, ssplit, parse, sentiment");
+        nlp = new StanfordCoreNLP(nlpProps);
+        sentimentValues.put("Very negative", 1d);
+        sentimentValues.put("Negative", 2d);
+        sentimentValues.put("Neutral",3d);
+        sentimentValues.put("Positive",4d);
+        sentimentValues.put("Very positive",5d);
+
+    }
+
+    public Double analyze(String text) {
+        Annotation annotation = nlp.process(text);
+        List<CoreMap> sentences =  annotation.get(CoreAnnotations.SentencesAnnotation.class);
+        return   sentences.stream()
+                .map(sentence->sentence.get(SentimentClass.class))
+                .map(sentimentStr->sentimentValues.get(sentimentStr))
+                .mapToDouble(x->x).sum()
+                / (Double.parseDouble(String.valueOf(sentences.size())));
+    }
+}
Index: src/main/java/com/handson/sentiment/controller/AppController.java
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
diff --git a/src/main/java/com/handson/sentiment/controller/AppController.java b/src/main/java/com/handson/sentiment/controller/AppController.java
new file mode 100644
--- /dev/null	(date 1644441293605)
+++ b/src/main/java/com/handson/sentiment/controller/AppController.java	(date 1644441293605)
@@ -0,0 +1,21 @@
+package com.handson.sentiment.controller;
+
+import com.handson.sentiment.nlp.SentimentAnalyzer;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.bind.annotation.RestController;
+import reactor.core.publisher.Mono;
+
+@RestController
+public class AppController {
+    @Autowired
+    SentimentAnalyzer sentimentAnalyzer;
+
+    @RequestMapping(path = "/hello", method = RequestMethod.GET)
+    public  @ResponseBody Mono<String> hello(String text)  {
+        Double score =  sentimentAnalyzer.analyze(text);
+        return Mono.just("Score is:" + score);
+    }
+}