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Diffstat (limited to 'connectivity/source/inc/ado/Aolewrap.hxx')
| -rw-r--r-- | connectivity/source/inc/ado/Aolewrap.hxx | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/connectivity/source/inc/ado/Aolewrap.hxx b/connectivity/source/inc/ado/Aolewrap.hxx new file mode 100644 index 000000000..ef5c1a859 --- /dev/null +++ b/connectivity/source/inc/ado/Aolewrap.hxx @@ -0,0 +1,225 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ +#ifndef INCLUDED_CONNECTIVITY_SOURCE_INC_ADO_AOLEWRAP_HXX +#define INCLUDED_CONNECTIVITY_SOURCE_INC_ADO_AOLEWRAP_HXX + +#include <osl/diagnose.h> +#include <osl/thread.h> +#include <map> +#include <vector> + +namespace rtl +{ + class OUString; +} +namespace connectivity +{ + namespace ado + { + class OLEVariant; + class WpBase + { + protected: + IDispatch* pIUnknown; + + void setIDispatch(IDispatch* _pIUnknown); + public: + WpBase(); + WpBase(IDispatch* pInt); + //inline + WpBase& operator=(const WpBase& rhs); + WpBase& operator=(IDispatch* rhs); + WpBase(const WpBase& aWrapper); + virtual ~WpBase(); + void clear(); + + + bool IsValid() const; + operator IDispatch*(); + + }; + + // Template class WpOLEBase<class T> + // ================================== + // + // Objects of this class contain a pointer to an interface of the type T. + // The ctors and operator= make sure, that AddRef() and Release() are being + // called adhering to COM conventions. + // An object can also hold no pointer (null pointer), calling IsValid() then + // returns false. + // + // In order to do efficient pass-by-value, this class (as all derived classes) + // is a thin wrapper class, avoiding virtual methods and inlining. + + template<class T> class WpOLEBase : public WpBase + { + protected: + T* pInterface; + + public: + WpOLEBase(T* pInt = nullptr) : WpBase(pInt),pInterface(pInt){} + + + //inline + WpOLEBase<T>& operator=(const WpOLEBase<T>& rhs) + { + WpBase::operator=(rhs); + pInterface = rhs.pInterface; + return *this; + }; + + WpOLEBase<T>& operator=(T* rhs) + { + WpBase::operator=(rhs); + pInterface = rhs.pInterface; + return *this; + } + + WpOLEBase(const WpOLEBase<T>& aWrapper) + : WpBase( aWrapper ) + , pInterface( aWrapper.pInterface ) + { + } + + operator T*() const { return pInterface; } + void setWithOutAddRef(T* _pInterface) + { + pInterface = _pInterface; + WpBase::setIDispatch(_pInterface); + } + }; + + + // Template class WpOLECollection<class Ts, class T, class WrapT> + // =============================================================== + // + // This class (derived from WpOLEBase<Ts>), abstracts away the properties + // common to DAO collections: + // + // They are accessed via an interface Ts (e.g. DAOFields) and can return + // Items of the Type T (actually: with the interface T, e.g. DAOField) + // via get_Item (here GetItem). + // + // This wrapper class does not expose an interface T, however, + // it exposes an object of the class WrapT. This must allow a construction + // by T, preferably it is derived from WpOLEBase<T>. + + template<class Ts, class T, class WrapT> class WpOLECollection : public WpOLEBase<Ts> + { + public: + using WpOLEBase<Ts>::pInterface; + using WpOLEBase<Ts>::IsValid; + // Ctors, operator= + // They only call the superclass + WpOLECollection(Ts* pInt=nullptr):WpOLEBase<Ts>(pInt){} + WpOLECollection(const WpOLECollection& rhs) : WpOLEBase<Ts>(rhs) {} + WpOLECollection& operator=(const WpOLECollection& rhs) + {WpOLEBase<Ts>::operator=(rhs); return *this;}; + + + void Refresh(){pInterface->Refresh();} + + sal_Int32 GetItemCount() const + { + sal_Int32 nCount = 0; + return pInterface ? (SUCCEEDED(pInterface->get_Count(&nCount)) ? nCount : sal_Int32(0)) : sal_Int32(0); + } + + WrapT GetItem(sal_Int32 index) const + { + OSL_ENSURE(index >= 0 && index<GetItemCount(),"Wrong index for field!"); + T* pT = NULL; + WrapT aRet(NULL); + if(SUCCEEDED(pInterface->get_Item(OLEVariant(index), &pT))) + aRet.setWithOutAddRef(pT); + return aRet; + } + + WrapT GetItem(const OLEVariant& index) const + { + T* pT = NULL; + WrapT aRet(NULL); + if(SUCCEEDED(pInterface->get_Item(index, &pT))) + aRet.setWithOutAddRef(pT); + return aRet; + } + + WrapT GetItem(const OUString& sStr) const + { + WrapT aRet(NULL); + T* pT = NULL; + if (FAILED(pInterface->get_Item(OLEVariant(sStr), &pT))) + { +#if OSL_DEBUG_LEVEL > 0 + OString sTemp("Unknown Item: " + OString(sStr.getStr(),sStr.getLength(),osl_getThreadTextEncoding())); + OSL_FAIL(sTemp.getStr()); +#endif + } + else + aRet.setWithOutAddRef(pT); + return aRet; + } + void fillElementNames(::std::vector< OUString>& _rVector) + { + if(IsValid()) + { + Refresh(); + sal_Int32 nCount = GetItemCount(); + _rVector.reserve(nCount); + for(sal_Int32 i=0;i< nCount;++i) + { + WrapT aElement = GetItem(i); + if(aElement.IsValid()) + _rVector.push_back(aElement.get_Name()); + } + } + } + }; + + template<class Ts, class T, class WrapT> class WpOLEAppendCollection: + public WpOLECollection<Ts,T,WrapT> + { + + public: + // Ctors, operator= + // They only call the superclass + using WpOLEBase<Ts>::pInterface; + WpOLEAppendCollection(Ts* pInt=nullptr):WpOLECollection<Ts,T,WrapT>(pInt){} + WpOLEAppendCollection(const WpOLEAppendCollection& rhs) : WpOLECollection<Ts, T, WrapT>(rhs) {} + WpOLEAppendCollection& operator=(const WpOLEAppendCollection& rhs) + {WpOLEBase<Ts>::operator=(rhs); return *this;}; + + + bool Append(const WrapT& aWrapT) + { + return SUCCEEDED(pInterface->Append(OLEVariant(static_cast<T*>(aWrapT)))); + }; + + bool Delete(const OUString& sName) + { + return SUCCEEDED(pInterface->Delete(OLEVariant(sName))); + }; + + + }; + } +} +#endif // INCLUDED_CONNECTIVITY_SOURCE_INC_ADO_AOLEWRAP_HXX + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |