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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: Aolewrap.hxx,v $
* $Revision: 1.13 $
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef _CONNECTIVITY_ADO_AOLEWRAP_HXX_
#define _CONNECTIVITY_ADO_AOLEWRAP_HXX_
#include <osl/diagnose.h>
#include <osl/thread.h>
#include <map>
#include <vector>
#include "connectivity/StdTypeDefs.hxx"
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();
sal_Bool IsValid() const;
operator IDispatch*();
};
//////////////////////////////////////////////////////////////////////////
//
// Template-Klasse WpOLEBase<class T>
// ==================================
//
// Objekte dieser Klasse haelt einen Zeiger auf ein Interface vom Typ T.
// Es gibt Konstruktoren und Zuweisungsoperator die sicherstellen, dass
// AddRef() und Release() entsprechend den COM-Konventionen gerufen werden.
// Ein Objekt kann auch keinen Zeiger halten (Nullzeiger), dann ergibt
// der Aufruf von IsValid() FALSE.
//
// Um effizientes pass-by-value machen zu koennen, ist diese (ebenso wie die
// abgeleiteten Klassen) eine ganz schmale Wrapper-Klasse unter Vermeidung
// virtueller Methoden und mit Inlining.
//------------------------------------------------------------------------
template<class T> class WpOLEBase : public WpBase
{
protected:
T* pInterface;
public:
WpOLEBase(T* pInt = NULL) : 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)
{
operator=(aWrapper);
}
virtual ~WpOLEBase()
{
}
operator T*() const { return static_cast<T*>(pInterface); }
void setWithOutAddRef(T* _pInterface)
{
pInterface = _pInterface;
WpBase::setIDispatch(_pInterface);
}
};
//////////////////////////////////////////////////////////////////////////
//
// Template-Klasse WpOLECollection<class Ts, class T, class WrapT>
// ===============================================================
//
// Diese Klasse, welche sich von WpOLEBase<Ts> ableitet, abstrahiert die
// den DAO-Collections gemeinsamen Eigenschaften:
//
// Sie werden ueber ein Interface Ts (etwa: DAOFields) angesprochen
// und koennen ueber get_Item (hier:GetItem) Items des Typs T (genauer:
// mit Interface T, etwa DAOField) herausgeben.
//
// Diese Wrapperklasse gibt aber nicht ein Interface T heraus,
// sondern ein Objekt der Klasse WrapT. Dieses muss eine Konstruktion
// durch T zulassen, vorzugsweise ist es von WpOLEBase<T> abgeleitet.
//
//------------------------------------------------------------------------
template<class Ts, class T, class WrapT> class WpOLECollection : public WpOLEBase<Ts>
{
public:
using WpOLEBase<Ts>::pInterface;
using WpOLEBase<Ts>::IsValid;
// Konstruktoren, operator=
// diese rufen nur die Oberklasse
WpOLECollection(Ts* pInt=NULL):WpOLEBase<Ts>(pInt){}
WpOLECollection(const WpOLECollection& rhs){operator=(rhs);}
inline WpOLECollection& operator=(const WpOLECollection& rhs)
{WpOLEBase<Ts>::operator=(rhs); return *this;};
//////////////////////////////////////////////////////////////////////
inline void Refresh(){pInterface->Refresh();}
inline sal_Int32 GetItemCount() const
{
sal_Int32 nCount = 0;
return pInterface ? (SUCCEEDED(pInterface->get_Count(&nCount)) ? nCount : sal_Int32(0)) : sal_Int32(0);
}
inline 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;
}
inline WrapT GetItem(const OLEVariant& index) const
{
T* pT = NULL;
WrapT aRet(NULL);
if(SUCCEEDED(pInterface->get_Item(index, &pT)))
aRet.setWithOutAddRef(pT);
return aRet;
}
inline WrapT GetItem(const ::rtl::OUString& sStr) const
{
WrapT aRet(NULL);
T* pT = NULL;
if (FAILED(pInterface->get_Item(OLEVariant(sStr), &pT)))
{
#if OSL_DEBUG_LEVEL > 0
::rtl::OString sTemp("Unknown Item: ");
sTemp += ::rtl::OString(sStr.getStr(),sStr.getLength(),osl_getThreadTextEncoding());
OSL_ENSURE(0,sTemp);
#endif
}
else
aRet.setWithOutAddRef(pT);
return aRet;
}
inline void fillElementNames(TStringVector& _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:
// Konstruktoren, operator=
// diese rufen nur die Oberklasse
using WpOLEBase<Ts>::pInterface;
WpOLEAppendCollection(Ts* pInt=NULL):WpOLECollection<Ts,T,WrapT>(pInt){}
WpOLEAppendCollection(const WpOLEAppendCollection& rhs){ operator=(rhs); }
inline WpOLEAppendCollection& operator=(const WpOLEAppendCollection& rhs)
{WpOLEBase<Ts>::operator=(rhs); return *this;};
//////////////////////////////////////////////////////////////////////
inline sal_Bool Append(const WrapT& aWrapT)
{
return SUCCEEDED(pInterface->Append(OLEVariant((T*)aWrapT)));
};
inline sal_Bool Delete(const ::rtl::OUString& sName)
{
return SUCCEEDED(pInterface->Delete(OLEVariant(sName)));
};
};
}
}
#endif // _CONNECTIVITY_ADO_AOLEWRAP_HXX_
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