Initiate Postgres connection pool on startup

src/main/java/database/PgDatabaseConnection.java

@@ -0,0 +1,28 @@
+package database;
+
+import database.note.NoteRowMapper;
+import org.jdbi.v3.core.Handle;
+import org.jdbi.v3.core.Jdbi;
+
+import javax.sql.DataSource;
+import java.sql.Connection;
+import java.sql.SQLException;
+
+public class PgDatabaseConnection {
+    private final DataSource dataSource;
+    private final Jdbi jdbi;
+
+    public PgDatabaseConnection(DataSource dataSource) {
+        this.dataSource = dataSource;
+        this.jdbi = Jdbi.create(dataSource)
+                .registerRowMapper(new NoteRowMapper()); // TODO: configure jdbi elsewhere
+    }
+
+    public Connection getConnection() throws SQLException {
+        return dataSource.getConnection();
+    }
+
+    public Handle getHandle() {
+        return jdbi.open();
+    }
+}