From: Mikko Rasa <tdb@tdb.fi>
Date: Thu, 4 Feb 2010 17:58:31 +0000 (+0000)
Subject: Create improvement replacements for BasicLoader* in objectloader.h
X-Git-Url: http://git.tdb.fi/?a=commitdiff_plain;h=3eb3c5cce35d3d6193afadecc3707f9c2448f370;p=libs%2Fdatafile.git

Create improvement replacements for BasicLoader* in objectloader.h
Mark the old ones as deprecated
---

diff --git a/source/loader.h b/source/loader.h
index 5c8726a..6f7e614 100644
--- a/source/loader.h
+++ b/source/loader.h
@@ -156,8 +156,7 @@ protected:
 
 
 /**
-Provides the basic functionality of an object loader.  Deriving from this
-allows loading values directly into member variables of the objects.
+Deprecated.  See ObjectLoader in objectloader.h.
 */
 template<typename O>
 class BasicLoader: public Loader
@@ -175,8 +174,7 @@ public:
 
 
 /**
-Provides functionality for loading objects with a Collection.  Deriving from
-this allows loading pointers to objects in the collection automatically.
+Deprecated.  See CollectionObjectLoader in objectloader.h.
 */
 template<typename O, typename C>
 class BasicLoader2: public BasicLoader<O>
diff --git a/source/objectloader.h b/source/objectloader.h
new file mode 100644
index 0000000..515ea6b
--- /dev/null
+++ b/source/objectloader.h
@@ -0,0 +1,65 @@
+/* $Id$
+
+This file is part of libmspdatafile
+Copyright © 2010  Mikko Rasa, Mikkosoft Productions
+Distributed under the LGPL
+*/
+
+#ifndef MSP_DATAFILE_OBJECTLOADER_H_
+#define MSP_DATAFILE_OBJECTLOADER_H_
+
+#include "loader.h"
+
+namespace Msp {
+namespace DataFile {
+
+class Collection;
+
+/**
+Provides the basic functionality of an object loader.  Deriving from this
+allows loading values directly into member variables of the objects.
+*/
+template<typename O>
+class ObjectLoader: public Loader
+{
+public:
+	typedef O Object;
+
+protected:
+	O &obj;
+
+	ObjectLoader(O &o): obj(o) { }
+
+public:
+	O &get_object() const { return obj; }
+};
+
+
+/**
+Provides functionality for loading objects with a Collection.  Deriving from
+this allows loading pointers to objects in the collection automatically.
+*/
+template<typename O, typename C = Collection>
+class CollectionObjectLoader: public ObjectLoader<O>
+{
+public:
+	typedef C Collection;
+
+protected:
+	C *coll;
+
+	CollectionObjectLoader(O &o, C *c): ObjectLoader<O>(o), coll(c) { }
+
+public:
+	C &get_collection() const
+	{
+		if(!coll)
+			throw InvalidState("No collection");
+		return *coll;
+	}
+};
+
+} // namespace DataFile
+} // namespace Msp
+
+#endif