From ec7ad29d5103f7c6a96ec5980ea76d1f4c8a89df Mon Sep 17 00:00:00 2001
From: Tanay Soni <tanaysoni12@gmail.com>
Date: Wed, 22 Jan 2020 15:53:04 +0100
Subject: [PATCH] Add BaseDocumentStore

---
 haystack/database/base.py | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 haystack/database/base.py

diff --git a/haystack/database/base.py b/haystack/database/base.py
new file mode 100644
index 000000000..5a5ada63c
--- /dev/null
+++ b/haystack/database/base.py
@@ -0,0 +1,21 @@
+from abc import abstractmethod
+
+
+class BaseDocumentStore:
+    """
+    Base class for implementing DataStores.
+    """
+
+    @abstractmethod
+    def write_documents(self, documents):
+        pass
+
+    @abstractmethod
+    def get_document_by_id(self, id):
+        pass
+
+    @abstractmethod
+    def get_document_ids_by_tag(self, tag):
+        pass
+
+