From 9051a2f2e8501fd92664ddb7092335ec02f83c92 Mon Sep 17 00:00:00 2001
From: Nadja Reitzenstein <me@dequbed.space>
Date: Wed, 16 Nov 2022 12:57:41 +0100
Subject: [PATCH] status commit

---
 bffhd/db/index.rs | 34 ++++++++++++++++++++++++++++++++++
 bffhd/db/mod.rs   |  2 ++
 2 files changed, 36 insertions(+)
 create mode 100644 bffhd/db/index.rs

diff --git a/bffhd/db/index.rs b/bffhd/db/index.rs
new file mode 100644
index 0000000..1865f23
--- /dev/null
+++ b/bffhd/db/index.rs
@@ -0,0 +1,34 @@
+/*
+ * Copyright © 2022 RLKM UG (haftungsbeschränkt).
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+
+use std::marker::PhantomData;
+use lmdb::Transaction;
+use crate::db;
+use crate::db::{Adapter, DB};
+
+pub struct Index<I, A> {
+    db: DB<A>,
+    _marker: PhantomData<I>,
+}
+
+impl<I: AsRef<[u8]>, A: Adapter> Index<I, A> {
+    pub fn get<T: Transaction>(
+        &self, txn: &T, lookup: I,
+    ) -> Result<Option<A::Item>, db::Error> {
+        self.db.get(txn, lookup)
+    }
+}
\ No newline at end of file
diff --git a/bffhd/db/mod.rs b/bffhd/db/mod.rs
index 36a5690..e75fa2b 100644
--- a/bffhd/db/mod.rs
+++ b/bffhd/db/mod.rs
@@ -9,6 +9,8 @@ use std::fmt::{Debug, Display, Formatter};
 mod typed;
 pub use typed::{Adapter, AlignedAdapter, ArchivedValue, DB};
 
+mod index;
+
 pub type ErrorO = lmdb::Error;
 
 pub type Result<T> = std::result::Result<T, Error>;