Implement DML func and related tests

dbconnection.go

@@ -0,0 +1,32 @@
+package simpleorm
+
+import (
+	"database/sql"
+
+	log "gitlab.com/gdulai/simpleloglvl"
+)
+
+type DBConnection struct {
+	db    *sql.DB
+	State int
+}
+
+func OpenConnection(driver string, dsn string) *DBConnection {
+	// Open encrypted database
+	db, err := sql.Open(driver, dsn)
+	if err != nil {
+		log.LogError("Failed to open db connection: %s", err)
+		return &DBConnection{db: nil, State: -1}
+	}
+
+	return &DBConnection{db: db, State: 1}
+}
+
+func (c *DBConnection) Close() (bool, error) {
+	err := c.db.Close()
+	if err != nil {
+		return false, err
+	}
+	c = nil
+	return true, nil
+}