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diff --git a/relcatalogif/mdddimensiontype.hh b/relcatalogif/mdddimensiontype.hh
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+/*
+* This file is part of rasdaman community.
+*
+* Rasdaman community 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 3 of the License, or
+* (at your option) any later version.
+*
+* Rasdaman community 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 rasdaman community.  If not, see <http://www.gnu.org/licenses/>.
+*
+* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
+rasdaman GmbH.
+*
+* For more information please see <http://www.rasdaman.org>
+* or contact Peter Baumann via <baumann@rasdaman.com>.
+*/
+// -*-C++-*- (for Emacs)
+
+/*************************************************************
+ *
+ *
+ * PURPOSE:
+ *   The MDDBaseType class is used as a type for MDDs where
+ *   the base type and the dimensionality is specified.
+ *
+ *
+ * COMMENTS:
+ *
+ ************************************************************/
+
+#ifndef _MDDDIMENSIONTYPE_HH_
+#define _MDDDIMENSIONTYPE_HH_
+
+#include <iostream>
+#include "raslib/mddtypes.hh"
+#include "catalogmgr/ops.hh"
+#include "mddbasetype.hh"
+
+class OId;
+
+//@ManMemo: Module: {\bf relcatalogif}.
+
+/*@Doc:
+  The MDDBaseType class is used as a type for MDDs where
+  the base type and the dimensionality is specified.
+*/
+
+class MDDDimensionType : public MDDBaseType
+	{
+	public:
+		virtual char* getTypeStructure() const;
+		/*@Doc:
+		*/
+
+		virtual r_Bytes getMemorySize() const;
+		/*@Doc:
+		the memory size is computed by:
+		MDDBaseType::getMemorySize() + sizeof(r_Dimension);
+		*/
+
+		MDDDimensionType(const OId& id) throw (r_Error);
+		/*@Doc:
+		*/
+
+		MDDDimensionType(const char* newTypeName, const BaseType* newBaseType, r_Dimension newDimension);
+		/*@Doc:
+		constructor.
+		*/
+
+		MDDDimensionType();
+		/*@Doc:
+		default constructor, cannot be used.
+		*/
+
+		MDDDimensionType(const MDDDimensionType& old);
+		/*@Doc:
+		copy constructor.
+		*/
+
+		MDDDimensionType& operator=(const MDDDimensionType& old);
+		/*@Doc:
+		assignment operator.
+		*/
+
+		virtual void print_status( ostream& s ) const;
+		/*@Doc:
+		writes the state of the object to the specified stream
+		*/
+
+		r_Dimension getDimension() const;
+		/*@Doc:
+		return dimensionality
+		*/
+
+		virtual ~MDDDimensionType();
+		/*@Doc:
+		virtual destructor.
+		*/
+
+		virtual int compatibleWith(const Type* aType) const;
+		/*@Doc:
+		is compatible if:
+			aType is MDDDimType or MDDDomType and
+			the basetypes are compatible
+			and dimensionality is the same
+		*/
+
+	protected:
+
+		virtual void insertInDb() throw (r_Error);
+
+		virtual void readFromDb() throw (r_Error);
+
+		virtual void deleteFromDb() throw (r_Error);
+		
+		r_Dimension myDimension;
+		/*@Doc:
+		dimensionality.
+		*/
+	};
+
+#endif