From eb4d2ef5c9655da307a238b7644ec00f25d3e6f9 Mon Sep 17 00:00:00 2001
From: Adam Jakab <jakabadambalazs@gmail.com>
Date: Sun, 15 Mar 2020 12:52:56 +0100
Subject: [PATCH] added missing abstract method

---
 beets/dbcore/query.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/beets/dbcore/query.py b/beets/dbcore/query.py
index 239eaa965..1bac90c06 100644
--- a/beets/dbcore/query.py
+++ b/beets/dbcore/query.py
@@ -162,6 +162,10 @@ class NoneQuery(FieldQuery):
         except KeyError:
             return True
 
+    @classmethod
+    def value_match(cls, pattern, value):
+        return pattern == value
+
     def __repr__(self):
         return "{0.__class__.__name__}({0.field!r}, {0.fast})".format(self)