Add PDFDocument.java

examples/java/src/main/java/com/xebia/functional/xef/java/auto/PDFDocument.java

@@ -0,0 +1,53 @@
+package com.xebia.functional.xef.java.auto;
+
+import com.xebia.functional.tokenizer.ModelType;
+import com.xebia.functional.xef.textsplitters.TextSplitter;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ExecutionException;
+
+import static com.xebia.functional.xef.textsplitters.TokenTextSplitterKt.TokenTextSplitter;
+
+public class PDFDocument {
+
+    public static class AIResponse {
+        public String answer;
+        public String source;
+    }
+
+    private static final String pdfUrl = "https://people.cs.ksu.edu/~schmidt/705a/Scala/Programming-in-Scala.pdf";
+    private static final BufferedReader sysin = new BufferedReader(new InputStreamReader(System.in));
+
+    private static CompletableFuture<Void> askQuestion(AIScope scope) {
+        System.out.println("Enter your question: ");
+
+        String line = readLine();
+        if (line == null) {
+            return CompletableFuture.completedFuture(null);
+        } else {
+            scope.prompt(line, AIResponse.class)
+                    .thenAccept((aiRes) -> System.out.println(aiRes.answer + "\n---\n" +
+                            aiRes.source + "\n---\n"));
+
+            return askQuestion(scope);
+        }
+    }
+
+    public static void main(String[] args) throws ExecutionException, InterruptedException {
+        TextSplitter textSplitter = TokenTextSplitter(ModelType.getDEFAULT_SPLITTER_MODEL(), 100, 50);
+        try (AIScope scope = new AIScope()) {
+            scope.contextScope(scope.pdf(pdfUrl, textSplitter).get(), PDFDocument::askQuestion).get();
+        }
+    }
+
+    private static String readLine() {
+        try {
+            return sysin.readLine();
+        } catch (IOException e) {
+            return null;
+        }
+    }
+}