1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 #ifndef _STORE_OBJECT_HXX_ 25 #define _STORE_OBJECT_HXX_ 26 27 #ifndef _SAL_TYPES_H_ 28 #include "sal/types.h" 29 #endif 30 31 #ifndef _RTL_REF_HXX_ 32 #include "rtl/ref.hxx" 33 #endif 34 35 #ifndef _OSL_INTERLCK_H_ 36 #include "osl/interlck.h" 37 #endif 38 39 namespace store 40 { 41 42 /*======================================================================== 43 * 44 * IStoreHandle interface. 45 * 46 *======================================================================*/ 47 class IStoreHandle : public rtl::IReference 48 { 49 public: 50 /** Replaces dynamic_cast type checking. 51 */ 52 virtual sal_Bool SAL_CALL isKindOf (sal_uInt32 nTypeId) = 0; 53 }; 54 55 56 /** Template helper function as dynamic_cast replacement. 57 */ 58 template<class store_handle_type> 59 store_handle_type * SAL_CALL query ( 60 IStoreHandle * pHandle, store_handle_type *); 61 62 /*======================================================================== 63 * 64 * OStoreObject interface. 65 * 66 *======================================================================*/ 67 class OStoreObject : public store::IStoreHandle 68 { 69 /** Template function specialization as dynamic_cast replacement. 70 */ 71 friend OStoreObject* 72 SAL_CALL query<> (IStoreHandle *pHandle, OStoreObject*); 73 74 public: 75 /** Construction. 76 */ 77 OStoreObject (void); 78 79 /** Allocation. 80 */ 81 static void* operator new (size_t n); 82 static void operator delete (void *p, size_t); 83 84 /** IStoreHandle. 85 */ 86 virtual sal_Bool SAL_CALL isKindOf (sal_uInt32 nTypeId); 87 88 /** IReference. 89 */ 90 virtual oslInterlockedCount SAL_CALL acquire (void); 91 virtual oslInterlockedCount SAL_CALL release (void); 92 93 protected: 94 /** Destruction. 95 */ 96 virtual ~OStoreObject (void); 97 98 private: 99 /** The IStoreHandle TypeId. 100 */ 101 static const sal_uInt32 m_nTypeId; 102 103 /** Representation. 104 */ 105 oslInterlockedCount m_nRefCount; 106 107 /** Not implemented. 108 */ 109 OStoreObject (const OStoreObject&); 110 OStoreObject& operator= (const OStoreObject&); 111 }; 112 113 /** Template function specialization as dynamic_cast replacement. 114 */ 115 template<> inline OStoreObject* query(IStoreHandle * pHandle,OStoreObject *)116SAL_CALL query (IStoreHandle *pHandle, OStoreObject*) 117 { 118 if (pHandle && pHandle->isKindOf (OStoreObject::m_nTypeId)) 119 { 120 // Handle is kind of OStoreObject. 121 return static_cast<OStoreObject*>(pHandle); 122 } 123 return 0; 124 } 125 126 /*======================================================================== 127 * 128 * The End. 129 * 130 *======================================================================*/ 131 132 } // namespace store 133 134 #endif /* !_STORE_OBJECT_HXX_ */ 135