From 848ed1478866e4d99c10aa962a6d976a6b989536 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Mon, 23 Jun 2014 09:12:51 +0200
Subject: db/proxy: fall back to recursive walk on old libmpdclient/MPD

Error message was 'too few arguments for "find"' because the "base"
constraint was not supported, and no other constraints remained.
---
 src/SongFilter.hxx | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'src/SongFilter.hxx')

diff --git a/src/SongFilter.hxx b/src/SongFilter.hxx
index b15127c07..8c46ed5f3 100644
--- a/src/SongFilter.hxx
+++ b/src/SongFilter.hxx
@@ -109,6 +109,11 @@ public:
 		return items;
 	}
 
+	gcc_pure
+	bool IsEmpty() const {
+		return items.empty();
+	}
+
 	/**
 	 * Is there at least one item with "fold case" enabled?
 	 */
@@ -121,6 +126,12 @@ public:
 		return false;
 	}
 
+	/**
+	 * Does this filter contain constraints other than "base"?
+	 */
+	gcc_pure
+	bool HasOtherThanBase() const;
+
 	/**
 	 * Returns the "base" specification (if there is one) or an
 	 * empty string.
-- 
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