Fix HypotheticalQuestionGraphIngestor wrong constructor (#219)

Author: vga91

content-retrievers/langchain4j-community-neo4j-retriever/src/test/java/dev/langchain4j/community/rag/content/retriever/neo4j/Neo4jEmbeddingStoreIngestorTest.java

@@ -265,7 +265,7 @@ public void testHypotheticalQuestionIngestor() {
 
         when(chatLanguageModel.chat(anyList()))
                 .thenReturn(ChatResponse.builder()
-                        .aiMessage(AiMessage.aiMessage("What is the Machine learning?"))
+                        .aiMessage(AiMessage.aiMessage("Who is John Doe?"))
                         .build());
 
         hypotheticalQuestionIngestorCommon(chatLanguageModel);
@@ -334,10 +334,8 @@ protected static void summaryGraphIngestorCommon(ChatModel chatModel) {
 
     protected static void hypotheticalQuestionIngestorCommon(ChatModel chatModel) {
 
-        int maxSegmentSize = 250;
-
         // Splits into sentences using OpenNLP
-        DocumentSplitter splitter = new DocumentBySentenceSplitter(maxSegmentSize, 0);
+        DocumentSplitter splitter = new DocumentBySentenceSplitter(100, 0);
 
         // Ingest the document into Neo4j as chunk-question nodes
         Neo4jEmbeddingStoreIngestor ingestor = HypotheticalQuestionGraphIngestor.builder()
@@ -348,17 +346,17 @@ protected static void hypotheticalQuestionIngestorCommon(ChatModel chatModel) {
                 .embeddingStore(embeddingStore)
                 .build();
 
-        Document document = getDocumentAI();
+        Document document = getDocumentMiscTopics();
         ingestor.ingest(document);
 
         final EmbeddingStoreContentRetriever retriever = getEmbeddingStoreContentRetriever(ingestor);
-        List<Content> results = retriever.retrieve(Query.from("Tell me about machine learning"));
+        List<Content> results = retriever.retrieve(Query.from("Who is John Doe?"));
 
         assertFalse(results.isEmpty(), "Should retrieve at least one parent document");
 
         Content result = results.get(0);
 
-        assertThat(result.textSegment().text().toLowerCase()).containsIgnoringWhitespaces("machine learning");
+        assertThat(result.textSegment().text().toLowerCase()).containsIgnoringWhitespaces("super saiyan");
         assertEquals("Wikipedia link", result.textSegment().metadata().getString("source"));
         assertEquals("https://example.com/ai", result.textSegment().metadata().getString("url"));
     }

embedding-stores/langchain4j-community-neo4j/src/main/java/dev/langchain4j/community/store/embedding/neo4j/HypotheticalQuestionGraphIngestor.java

@@ -23,8 +23,8 @@ public HypotheticalQuestionGraphIngestor(final Builder builder) {
         super(builder);
     }
 
-    public static SummaryGraphIngestor.Builder builder() {
-        return new SummaryGraphIngestor.Builder();
+    public static HypotheticalQuestionGraphIngestor.Builder builder() {
+        return new HypotheticalQuestionGraphIngestor.Builder();
     }
 
     public static class Builder extends Neo4jEmbeddingStoreIngestor.Builder {