store/source/object.hxx

   1 /*************************************************************************
   2  *
   3  *  OpenOffice.org - a multi-platform office productivity suite
   4  *
   5  *  $RCSfile: object.hxx,v $
   6  *
   7  *  $Revision: 1.1.2.1 $
   8  *
   9  *  last change: $Author: mhu $ $Date: 2008/09/18 16:10:51 $
  10  *
  11  *  The Contents of this file are made available subject to
  12  *  the terms of GNU Lesser General Public License Version 2.1.
  13  *
  14  *
  15  *    GNU Lesser General Public License Version 2.1
  16  *    =============================================
  17  *    Copyright 2005 by Sun Microsystems, Inc.
  18  *    901 San Antonio Road, Palo Alto, CA 94303, USA
  19  *
  20  *    This library is free software; you can redistribute it and/or
  21  *    modify it under the terms of the GNU Lesser General Public
  22  *    License version 2.1, as published by the Free Software Foundation.
  23  *
  24  *    This library is distributed in the hope that it will be useful,
  25  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  26  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  27  *    Lesser General Public License for more details.
  28  *
  29  *    You should have received a copy of the GNU Lesser General Public
  30  *    License along with this library; if not, write to the Free Software
  31  *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  32  *    MA  02111-1307  USA
  33  *
  34  ************************************************************************/
  35
  36 #ifndef _STORE_OBJECT_HXX_
  37 #define _STORE_OBJECT_HXX_ "$Revision: 1.1.2.1 $"
  38
  39 #ifndef _SAL_TYPES_H_
  40 #include "sal/types.h"
  41 #endif
  42
  43 #ifndef _RTL_REF_HXX_
  44 #include "rtl/ref.hxx"
  45 #endif
  46
  47 #ifndef _OSL_INTERLCK_H_
  48 #include "osl/interlck.h"
  49 #endif
  50
  51 namespace store
  52 {
  53
  54 /*========================================================================
  55  *
  56  * IStoreHandle interface.
  57  *
  58  *======================================================================*/
  59 class IStoreHandle : public rtl::IReference
  60 {
  61 public:
  62     /** Replaces dynamic_cast type checking.
  63      */
  64     virtual sal_Bool SAL_CALL isKindOf (sal_uInt32 nTypeId) = 0;
  65 };
  66
  67
  68 /** Template helper function as dynamic_cast replacement.
  69  */
  70 template<class store_handle_type>
  71 store_handle_type * SAL_CALL query (
  72     IStoreHandle * pHandle, store_handle_type *);
  73
  74 /*========================================================================
  75  *
  76  * OStoreObject interface.
  77  *
  78  *======================================================================*/
  79 class OStoreObject : public store::IStoreHandle
  80 {
  81     /** Template function specialization as dynamic_cast replacement.
  82      */
  83     friend OStoreObject*
  84     SAL_CALL query<> (IStoreHandle *pHandle, OStoreObject*);
  85
  86 public:
  87     /** Construction.
  88      */
  89     OStoreObject (void);
  90
  91     /** Allocation.
  92      */
  93     static void* operator new (size_t n);
  94     static void  operator delete (void *p, size_t);
  95
  96     /** IStoreHandle.
  97      */
  98     virtual sal_Bool SAL_CALL isKindOf (sal_uInt32 nTypeId);
  99
 100     /** IReference.
 101      */
 102     virtual oslInterlockedCount SAL_CALL acquire (void);
 103     virtual oslInterlockedCount SAL_CALL release (void);
 104
 105 protected:
 106     /** Destruction.
 107      */
 108     virtual ~OStoreObject (void);
 109
 110 private:
 111     /** The IStoreHandle TypeId.
 112      */
 113     static const sal_uInt32 m_nTypeId;
 114
 115     /** Representation.
 116      */
 117     oslInterlockedCount m_nRefCount;
 118
 119     /** Not implemented.
 120      */
 121     OStoreObject (const OStoreObject&);
 122     OStoreObject& operator= (const OStoreObject&);
 123 };
 124
 125 /** Template function specialization as dynamic_cast replacement.
 126  */
 127 template<> inline OStoreObject*
 128 SAL_CALL query (IStoreHandle *pHandle, OStoreObject*)
 129 {
 130     if (pHandle && pHandle->isKindOf (OStoreObject::m_nTypeId))
 131     {
 132         // Handle is kind of OStoreObject.
 133         return static_cast<OStoreObject*>(pHandle);
 134     }
 135     return 0;
 136 }
 137
 138 /*========================================================================
 139  *
 140  * The End.
 141  *
 142  *======================================================================*/
 143
 144 } // namespace store
 145
 146 #endif /* !_STORE_OBJECT_HXX_ */