From 41104f2d2efe8dd2fa06995f00959756f2146ba6 Mon Sep 17 00:00:00 2001
From: Ming Fang <mfang@mitre.org>
Date: Tue, 10 Dec 2024 17:39:21 -0500
Subject: [PATCH] Update sql-type methods and reg-ex constraint for SQLite.

---
 .../database_backends/sqlite_backend.py          | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/stix2/datastore/relational_db/database_backends/sqlite_backend.py b/stix2/datastore/relational_db/database_backends/sqlite_backend.py
index 545f928b..d14738ec 100644
--- a/stix2/datastore/relational_db/database_backends/sqlite_backend.py
+++ b/stix2/datastore/relational_db/database_backends/sqlite_backend.py
@@ -39,6 +39,18 @@ def determine_sql_type_for_hex_property():  # noqa: F811
         # return LargeBinary
         return SQLiteBackend.determine_sql_type_for_string_property()
 
+    @staticmethod
+    def determine_sql_type_for_reference_property():  # noqa: F811
+        return Text
+
+    @staticmethod
+    def determine_sql_type_for_string_property():  # noqa: F811
+        return Text
+
+    @staticmethod
+    def determine_sql_type_for_key_as_id():  # noqa: F811
+        return Text
+
     @staticmethod
     def determine_sql_type_for_timestamp_property():  # noqa: F811
         return TIMESTAMP(timezone=True)
@@ -49,3 +61,7 @@ def determine_sql_type_for_timestamp_property():  # noqa: F811
     @staticmethod
     def array_allowed():
         return False
+
+    @staticmethod
+    def create_regex_constraint_expression(column_name, pattern):
+        return f"{column_name} ~ {pattern}"