BAEL-5401: Update Fields of Documents in MongoDB Using the Java Driver (#11889)

2022-03-06 09:59:16 +05:30
parent 28519a494c
commit dafb4d1f58
2 changed files with 271 additions and 0 deletions
@@ -0,0 +1,128 @@
+package com.baeldung.mongo.update;
+
+import org.bson.Document;
+
+import com.mongodb.MongoClient;
+import com.mongodb.client.MongoCollection;
+import com.mongodb.client.MongoDatabase;
+import com.mongodb.client.model.Filters;
+import com.mongodb.client.model.FindOneAndReplaceOptions;
+import com.mongodb.client.model.FindOneAndUpdateOptions;
+import com.mongodb.client.model.ReturnDocument;
+import com.mongodb.client.model.Updates;
+import com.mongodb.client.result.UpdateResult;
+
+public class UpdateFields {
+
+    private static MongoClient mongoClient;
+    private static MongoDatabase database;
+    private static MongoCollection<Document> collection;
+
+    public static void updateOne() {
+
+        UpdateResult updateResult = collection.updateOne(Filters.eq("student_name", "Paul Starc"), Updates.set("address", "Hostel 2"));
+
+        System.out.println("updateResult:- " + updateResult);
+    }
+
+    public static void updateMany() {
+
+        UpdateResult updateResult = collection.updateMany(Filters.lt("age", 20), Updates.set("Review", true));
+
+        System.out.println("updateResult:- " + updateResult);
+
+    }
+
+    public static void replaceOne() {
+
+        Document replaceDocument = new Document();
+        replaceDocument.append("student_id", 8764)
+            .append("student_name", "Paul Starc")
+            .append("address", "Hostel 3")
+            .append("age", 18)
+            .append("roll_no", 199406);
+
+        UpdateResult updateResult = collection.replaceOne(Filters.eq("student_id", 8764), replaceDocument);
+
+        System.out.println("updateResult:- " + updateResult);
+
+    }
+
+    public static void findOneAndReplace() {
+
+        Document replaceDocument = new Document();
+        replaceDocument.append("student_id", 8764)
+            .append("student_name", "Paul Starc")
+            .append("address", "Hostel 4")
+            .append("age", 18)
+            .append("roll_no", 199406);
+        Document sort = new Document("roll_no", 1);
+        Document projection = new Document("_id", 0).append("student_id", 1)
+            .append("address", 1);
+        Document resultDocument = collection.findOneAndReplace(Filters.eq("student_id", 8764), replaceDocument, new FindOneAndReplaceOptions().upsert(true)
+            .sort(sort)
+            .projection(projection)
+            .returnDocument(ReturnDocument.AFTER));
+
+        System.out.println("resultDocument:- " + resultDocument);
+
+    }
+
+    public static void findOneAndUpdate() {
+
+        Document sort = new Document("roll_no", 1);
+        Document projection = new Document("_id", 0).append("student_id", 1)
+            .append("address", 1);
+        Document resultDocument = collection.findOneAndUpdate(Filters.eq("student_id", 8764), Updates.inc("roll_no", 5), new FindOneAndUpdateOptions().upsert(true)
+            .sort(sort)
+            .projection(projection)
+            .returnDocument(ReturnDocument.AFTER));
+
+        System.out.println("resultDocument:- " + resultDocument);
+    }
+
+    public static void setup() {
+        if (mongoClient == null) {
+            mongoClient = new MongoClient("localhost", 27017);
+            database = mongoClient.getDatabase("baeldung");
+            collection = database.getCollection("student");
+
+        }
+    }
+
+    public static void main(String[] args) {
+
+        //
+        // Connect to cluster (default is localhost:27017)
+        //
+        setup();
+
+        //
+        // Update a document using updateOne method
+        //
+        updateOne();
+
+        //
+        // Update documents using updateMany method
+        //
+        updateMany();
+
+        //
+        // replace a document using replaceOne method
+        //
+        replaceOne();
+
+        //
+        // replace a document using findOneAndReplace method
+        //
+        findOneAndReplace();
+
+        //
+        // Update a document using findOneAndUpdate method
+        //
+        findOneAndUpdate();
+
+    }
+
+}
+