db/lazy: remove obsolete class

Makefile.am

@@ -734,7 +734,6 @@ libdb_plugins_a_SOURCES = \
 	src/db/plugins/simple/DatabaseSave.hxx \
 	src/db/plugins/simple/DirectorySave.cxx \
 	src/db/plugins/simple/DirectorySave.hxx \
-	src/db/plugins/LazyDatabase.cxx src/db/plugins/LazyDatabase.hxx \
 	src/db/plugins/simple/Directory.cxx \
 	src/db/plugins/simple/Directory.hxx \
 	src/db/plugins/simple/Song.cxx \

src/db/plugins/LazyDatabase.cxx

-/*
- * Copyright 2003-2016 The Music Player Daemon Project
- * http://www.musicpd.org
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include "config.h"
-#include "LazyDatabase.hxx"
-#include "db/Interface.hxx"
-
-#include <assert.h>
-
-LazyDatabase::LazyDatabase(Database *_db)
-	:Database(_db->GetPlugin()), db(_db), open(false) {}
-
-LazyDatabase::~LazyDatabase()
-{
-	assert(!open);
-
-	delete db;
-}
-
-bool
-LazyDatabase::EnsureOpen(Error &error) const
-{
-	if (open)
-		return true;
-
-	if (!db->Open(error))
-		return false;
-
-	open = true;
-	return true;
-}
-
-void
-LazyDatabase::Close()
-{
-	if (open) {
-		open = false;
-		db->Close();
-	}
-}
-
-const LightSong *
-LazyDatabase::GetSong(const char *uri, Error &error) const
-{
-	return EnsureOpen(error)
-		? db->GetSong(uri, error)
-		: nullptr;
-}
-
-void
-LazyDatabase::ReturnSong(const LightSong *song) const
-{
-	assert(open);
-
-	db->ReturnSong(song);
-}
-
-bool
-LazyDatabase::Visit(const DatabaseSelection &selection,
-		    VisitDirectory visit_directory,
-		    VisitSong visit_song,
-		    VisitPlaylist visit_playlist,
-		    Error &error) const
-{
-	return EnsureOpen(error) &&
-		db->Visit(selection, visit_directory, visit_song,
-			  visit_playlist, error);
-}
-
-bool
-LazyDatabase::VisitUniqueTags(const DatabaseSelection &selection,
-			      TagType tag_type, tag_mask_t group_mask,
-			      VisitTag visit_tag,
-			      Error &error) const
-{
-	return EnsureOpen(error) &&
-		db->VisitUniqueTags(selection, tag_type, group_mask, visit_tag,
-				    error);
-}
-
-bool
-LazyDatabase::GetStats(const DatabaseSelection &selection,
-		       DatabaseStats &stats, Error &error) const
-{
-	return EnsureOpen(error) && db->GetStats(selection, stats, error);
-}
-
-time_t
-LazyDatabase::GetUpdateStamp() const
-{
-	return open ? db->GetUpdateStamp() : 0;
-}

src/db/plugins/LazyDatabase.hxx

-/*
- * Copyright 2003-2016 The Music Player Daemon Project
- * http://www.musicpd.org
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#ifndef MPD_LAZY_DATABASE_PLUGIN_HXX
-#define MPD_LAZY_DATABASE_PLUGIN_HXX
-
-#include "db/Interface.hxx"
-#include "Compiler.h"
-
-/**
- * A wrapper for a #Database object that gets opened on the first
- * database access.  This works around daemonization problems with
- * some plugins.
- */
-class LazyDatabase final : public Database {
-	Database *const db;
-
-	mutable bool open;
-
-public:
-	gcc_nonnull_all
-	LazyDatabase(Database *_db);
-
-	virtual ~LazyDatabase();
-
-	virtual void Close() override;
-
-	virtual const LightSong *GetSong(const char *uri_utf8,
-					 Error &error) const override;
-	void ReturnSong(const LightSong *song) const override;
-
-	virtual bool Visit(const DatabaseSelection &selection,
-			   VisitDirectory visit_directory,
-			   VisitSong visit_song,
-			   VisitPlaylist visit_playlist,
-			   Error &error) const override;
-
-	virtual bool VisitUniqueTags(const DatabaseSelection &selection,
-				     TagType tag_type, tag_mask_t group_mask,
-				     VisitTag visit_tag,
-				     Error &error) const override;
-
-	virtual bool GetStats(const DatabaseSelection &selection,
-			      DatabaseStats &stats,
-			      Error &error) const override;
-
-	virtual time_t GetUpdateStamp() const override;
-
-private:
-	bool EnsureOpen(Error &error) const;
-};
-
-#endif