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Diffstat (limited to 'source/kernel/gen_system/GEN_DataCache.h')
-rw-r--r--source/kernel/gen_system/GEN_DataCache.h78
1 files changed, 78 insertions, 0 deletions
diff --git a/source/kernel/gen_system/GEN_DataCache.h b/source/kernel/gen_system/GEN_DataCache.h
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+++ b/source/kernel/gen_system/GEN_DataCache.h
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+/**
+ * $Id$
+ *
+ * ***** 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