Partition: add method GetDatabase()

src/Partition.cxx

@@ -19,6 +19,7 @@
 
 #include "config.h"
 #include "Partition.hxx"
+#include "Instance.hxx"
 #include "DetachedSong.hxx"
 #include "output/MultipleOutputs.hxx"
 #include "mixer/Volume.hxx"
@@ -27,6 +28,12 @@
 
 #ifdef ENABLE_DATABASE
 
+const Database *
+Partition::GetDatabase(Error &error) const
+{
+	return instance.GetDatabase(error);
+}
+
 void
 Partition::DatabaseModified(const Database &db)
 {

src/Partition.hxx

@@ -177,6 +177,13 @@ struct Partition final : private PlayerListener, private MixerListener {
 
 #ifdef ENABLE_DATABASE
 	/**
+	 * Returns the global #Database instance.  May return nullptr
+	 * if this MPD configuration has no database (no
+	 * music_directory was configured).
+	 */
+	const Database *GetDatabase(Error &error) const;
+
+	/**
 	 * The database has been modified.  Propagate the change to
 	 * all subsystems.
 	 */