Article code (#13567)

2023-03-05 02:53:20 +05:30
parent d62fd23eb9
commit 68c8aa2bb1
3 changed files with 150 additions and 0 deletions
@@ -0,0 +1,74 @@
+package com.baeldung.mongo.insert;
+
+import com.mongodb.MongoClient;
+import com.mongodb.client.FindIterable;
+import com.mongodb.client.MongoCollection;
+import com.mongodb.client.MongoCursor;
+import com.mongodb.client.MongoDatabase;
+import org.bson.BsonDocument;
+import org.bson.Document;
+import org.bson.conversions.Bson;
+
+import static com.mongodb.client.model.Filters.*;
+
+public class InsertFieldIntoFilter {
+
+    private static MongoClient mongoClient;
+    private static MongoDatabase database;
+    private static MongoCollection<Document> collection;
+    private static String collectionName;
+    private static String databaseName;
+
+    public static void setUp() {
+        if (mongoClient == null) {
+            mongoClient = new MongoClient("localhost", 27017);
+
+            databaseName = "baeldung";
+            collectionName = "pet";
+
+            database = mongoClient.getDatabase(databaseName);
+            collection = database.getCollection(collectionName);
+        }
+    }
+
+    public static void addFieldToExistingBsonFilter() {
+
+        Bson existingFilter = and(eq("type", "Dog"), eq("gender", "Male"));
+
+        Bson newFilter = and(existingFilter, gt("age", 5));
+        FindIterable<Document> documents = collection.find(newFilter);
+
+        MongoCursor<Document> cursor = documents.iterator();
+        while (cursor.hasNext()) {
+            System.out.println(cursor.next());
+        }
+    }
+
+
+    public static void addFieldToExistingBsonFilterUsingBsonDocument() {
+
+        Bson existingFilter = eq("type", "Dog");
+        BsonDocument existingBsonDocument = existingFilter.toBsonDocument(BsonDocument.class, MongoClient.getDefaultCodecRegistry());
+
+        Bson newFilter = gt("age", 5);
+        BsonDocument newBsonDocument = newFilter.toBsonDocument(BsonDocument.class, MongoClient.getDefaultCodecRegistry());
+
+        existingBsonDocument.append("age", newBsonDocument.get("age"));
+
+        FindIterable<Document> documents = collection.find(existingBsonDocument);
+
+        MongoCursor<Document> cursor = documents.iterator();
+        while (cursor.hasNext()) {
+            System.out.println(cursor.next());
+        }
+    }
+
+    public static void main(String args[]) {
+
+        setUp();
+
+        addFieldToExistingBsonFilter();
+
+        addFieldToExistingBsonFilterUsingBsonDocument();
+    }
+}