Merge pull request #9 from mongodb-developer/fix/quick-fix

Fix/quick fix

Author: ricardohsmello

…va/102_aggregation_pipeline_unwind.ipynb …va/101_aggregation_pipeline_unwind.ipynbjava/102_aggregation_pipeline_unwind.ipynb renamed to java/101_aggregation_pipeline_unwind.ipynb java/102_aggregation_pipeline_unwind.ipynb renamed to java/101_aggregation_pipeline_unwind.ipynb

@@ -52,6 +52,10 @@
     "import static com.mongodb.client.model.Aggregates.project;\n",
     "import static com.mongodb.client.model.Aggregates.limit;\n",
     "\n",
+    "import static com.mongodb.client.model.Projections.include;\n",
+    "import static com.mongodb.client.model.Projections.excludeId;\n",
+    "import static com.mongodb.client.model.Projections.fields;\n",
+    "\n",
     "import org.bson.Document;\n",
     "\n",
     "// Configure SLF4J Simple Logger to suppress MongoDB driver logs in the notebook output.\n",
@@ -98,12 +102,16 @@
    "source": [
     "AggregateIterable<Document> result = authors.aggregate(\n",
     "    List.of(\n",
-    "        lookup(\"books\", // collection with the book data to read into authors\n",
-    "               \"books\", // array in authors documents with the ids of all books written by an author\n",
-    "               \"_id\",   // field in the books collection to link with\n",
-    "               \"booksWritten\"  // name of a newly created field with all this info\n",
-    "               ),\n",
-    "        project(Projections.exclude(\"_id\")),\n",
+    "        lookup(\n",
+    "            \"books\", // collection with the book data to read into authors\n",
+    "            \"books\", // array in authors documents with the ids of all books written by an author\n",
+    "            \"_id\",   // field in the books collection to link with\n",
+    "            \"booksWritten\"  // name of a newly created field with all this info\n",
+    "        ),\n",
+    "        project(fields(\n",
+    "            include(\"name\", \"booksWritten.title\", \"booksWritten.pages\", \"booksWritten.year\"),\n",
+    "            excludeId()\n",
+    "        )),\n",
     "        limit(20)\n",
     "    )\n",
     ");\n",
@@ -149,7 +157,8 @@
     "\n",
     "AggregateIterable<Document> result = books.aggregate(\n",
     "    List.of(\n",
-    "        <REPLACE_WITH_LOOKUP_STAGE>               \n",
+    "        <REPLACE_WITH_LOOKUP_STAGE>,\n",
+    "        <REPLACE_WITH_LIMIT_STAGE>               \n",
     "    )\n",
     ");\n",
     "\n",

…va/103_aggregation_pipeline_lookup.ipynb …va/102_aggregation_pipeline_lookup.ipynbjava/103_aggregation_pipeline_lookup.ipynb renamed to java/102_aggregation_pipeline_lookup.ipynb java/103_aggregation_pipeline_lookup.ipynb renamed to java/102_aggregation_pipeline_lookup.ipynb

@@ -156,7 +156,7 @@
     "### 2. Find the top 5 users with the highest number of reviews - use (Sort + Sum)\n",
     "Hint: use `sum` + `sort` to count and order the results, and don’t forget to use `limit` to keep the output easier to inspect.\n",
     "\n",
-    "[Solution here](https://mongodb-developer.github.io/sql-to-query-api-lab/docs/aggregation/group#-2-find-users-with-the-most-number-of-reviews-hint-use-the-name-field-in-the-reviews-collection)"
+    "[Solution here](https://mongodb-developer.github.io/sql-to-query-api-lab/docs/aggregation/group#-2-find-the-top-5-users-with-the-most-number-of-reviews-hint-use-the-name-field-in-the-reviews-collection)"
    ]
   },
   {