added endpoints for object deletion

src/services/product.js

@@ -57,6 +57,15 @@ class ProductService {
         if (result.rowCount == 0) throw new customError(`getByLocalId product not found`, responseCodes.responses.products.not_found);
         return result.rows[0];
     }
+
+    async getByAbstractProductID(groupId, abstractProductID) {
+        let result = (await db.query("SELECT * FROM products WHERE group_id = $1 AND abstract_product_id = $2", [groupId, abstractProductID]))
+        return result.rows
+    }
+
+    async delete(ID) {
+        await db.query("DELETE FROM products WHERE id = $1", [ID])
+    }
 };
 
 export default new ProductService();