Updated usercontroller

src/main/java/com/milav/jaguar/database/errors/manager/DBManager.java

@@ -0,0 +1,96 @@
+package com.milav.jaguar.database.manager;
+
+import com.milav.jaguar.database.errors.DBException;
+import com.mongodb.ConnectionString;
+import com.mongodb.DBObject;
+import com.mongodb.MongoClientSettings;
+import com.mongodb.ServerApi;
+import com.mongodb.ServerApiVersion;
+import com.mongodb.client.FindIterable;
+import com.mongodb.client.MongoClient;
+import com.mongodb.client.MongoClients;
+import com.mongodb.client.MongoCollection;
+import com.mongodb.client.MongoDatabase;
+import org.apache.logging.log4j.LogManager;
+
+import java.net.UnknownHostException;
+import java.util.List;
+
+/**
+ * Manages the database.
+ *
+ * @author Jigar Shah
+ */
+public class DBManager {
+
+    /**
+     * The logger.
+     */
+    private static final org.apache.logging.log4j.Logger LOGGER
+            = LogManager.getLogger(DBManager.class);
+    /**
+     * The database.
+     */
+    private static MongoDatabase mongoDB = null;
+    /**
+     * The database manager
+     */
+    private static DBManager dbManager = null;
+
+    /**
+     * Initialize the db manager.
+     *
+     * @throws UnknownHostException if we cannot determine the IP address of the
+     * host.
+     */
+    private DBManager() throws UnknownHostException {
+        init2();
+    }
+
+    /**
+     * Gets the database.
+     *
+     * @return MongoDatabase
+     * @throws DBException since we are dealing with the database.
+     */
+    public static MongoDatabase getMongoDB() throws DBException {
+        if (dbManager == null) {
+            try {
+                dbManager = new DBManager();
+            } catch (UnknownHostException ex) {
+                LOGGER.error(ex);
+                throw new DBException(ex.getMessage(), ex.fillInStackTrace());
+            }
+        }
+        return mongoDB;
+    }
+
+    private void init() {
+
+        try ( MongoClient mongoClient
+                = MongoClients.create(
+                        "mongodb+srv://milav:pulsar66@cluster0.jnvid.mongodb.net/jaguar?retryWrites=true&w=majority")) {
+            mongoDB = mongoClient.getDatabase("jaguar");
+        }
+    }
+
+    private void init2() {
+
+        ConnectionString connectionString = new ConnectionString("mongodb+srv://milav:pulsar66@cluster0.jnvid.mongodb.net/jaguar?retryWrites=true&w=majority");
+        MongoClientSettings settings = MongoClientSettings.builder()
+                .applyConnectionString(connectionString)
+                .serverApi(ServerApi.builder()
+                        .version(ServerApiVersion.V1)
+                        .build())
+                .build();
+        MongoClient mongoClient = MongoClients.create(settings);
+        mongoDB = mongoClient.getDatabase("jaguar");
+    }
+
+    public static void main(String[] args) throws DBException {
+        MongoDatabase db = DBManager.getMongoDB();
+        MongoCollection coll = db.getCollection("USER_PROFILE");
+
+        System.out.println("The number documents in the USER_PROFILE collection: " + coll.countDocuments());
+    }
+}

src/main/java/com/milav/jaguar/user/UserController.java

@@ -1,7 +1,7 @@
 package com.milav.jaguar.user;
 
 import com.milav.jaguar.database.errors.DBException;
-import com.milav.jaguar.database.manager.DBManager;
+import com.milav.jaguar.database.errors.manager.DBManager;
 import com.milav.jaguar.user.util.UserUtil;
 import com.mongodb.BasicDBObject;
 import com.mongodb.MongoTimeoutException;