From aa55d759f555782dc9cf2f9f6d489502310490a6 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Wed, 8 Aug 2012 08:19:30 +0200
Subject: DatabaseGlue: add function db_is_simple()

Preparing for non-"simple" database plugins.
---
 src/DatabaseGlue.cxx | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'src/DatabaseGlue.cxx')

diff --git a/src/DatabaseGlue.cxx b/src/DatabaseGlue.cxx
index 68ab11ab3..a0246253c 100644
--- a/src/DatabaseGlue.cxx
+++ b/src/DatabaseGlue.cxx
@@ -87,10 +87,19 @@ GetDatabase()
 	return db;
 }
 
+bool
+db_is_simple(void)
+{
+	assert(db == NULL || db_is_open);
+
+	return dynamic_cast<SimpleDatabase *>(db) != nullptr;
+}
+
 struct directory *
 db_get_root(void)
 {
 	assert(db != NULL);
+	assert(db_is_simple());
 
 	return ((SimpleDatabase *)db)->GetRoot();
 }
@@ -128,6 +137,7 @@ db_save(GError **error_r)
 {
 	assert(db != NULL);
 	assert(db_is_open);
+	assert(db_is_simple());
 
 	return ((SimpleDatabase *)db)->Save(error_r);
 }
@@ -153,6 +163,7 @@ db_get_mtime(void)
 {
 	assert(db != NULL);
 	assert(db_is_open);
+	assert(db_is_simple());
 
 	return ((SimpleDatabase *)db)->GetLastModified();
 }
-- 
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