From 12315f4d0e0ae993805f141f64cb8c73c5297311 Mon Sep 17 00:00:00 2001
From: Hans Lambermont <hans@lambermont.dyndns.org>
Date: Sat, 12 Oct 2002 11:37:38 +0000
Subject: Initial revision

---
 source/kernel/gen_system/GEN_DataCache.h | 78 ++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 source/kernel/gen_system/GEN_DataCache.h

(limited to 'source/kernel/gen_system/GEN_DataCache.h')

diff --git a/source/kernel/gen_system/GEN_DataCache.h b/source/kernel/gen_system/GEN_DataCache.h
new file mode 100644
index 00000000000..fb3a9ea4a72
--- /dev/null
+++ b/source/kernel/gen_system/GEN_DataCache.h
@@ -0,0 +1,78 @@
+/**
+ * $Id$
+ *
+ * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
+ *
+ * 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. The Blender
+ * Foundation also sells licenses for use in proprietary software under
+ * the Blender License.  See http://www.blender.org/BL/ for information
+ * about this.
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): none yet.
+ *
+ * ***** END GPL/BL DUAL LICENSE BLOCK *****
+ */
+#ifndef __GEN_DATACACHE_H
+#define __GEN_DATACACHE_H
+
+#include "STR_HashedString.h"
+#include "GEN_Map.h"
+
+template <class T> 
+class GEN_DataCache
+{
+	GEN_Map<STR_HashedString,T*>	m_dataCache;
+	virtual	T*	LoadData(const STR_String& name)=0;
+	virtual void	FreeCacheObjects()=0;
+
+public:
+	GEN_DataCache() {};
+	virtual ~GEN_DataCache() {};
+
+	T*		GetData(const STR_String& paramname)
+	{
+		T* result=NULL;
+
+		T** resultptr = m_dataCache[paramname];
+		if (resultptr)
+		{
+			result = *resultptr;
+		}
+		
+		else
+		{
+			result = LoadData(paramname);
+			if (result)
+			{
+				m_dataCache.insert(paramname,result);
+			}
+		}
+
+		return result;
+	}
+	
+	virtual void	ClearCache()
+	{
+		FreeCacheObjects();
+		m_dataCache.clear();
+	}
+};
+
+#endif //__GEN_DATACACHE_H
-- 
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