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/* -*- 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: */
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