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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 .
*/
#pragma once
#include <cppuhelper/propshlp.hxx>
#include <osl/diagnose.h>
#include <osl/mutex.hxx>
namespace cppu
{
class IPropertyArrayHelper;
}
namespace com::sun::star::lang
{
class XComponent;
}
namespace connectivity::mysqlc
{
/// @throws css::lang::DisposedException
void checkDisposed(bool _bThrow);
template <class TYPE> class OPropertyArrayUsageHelper
{
protected:
static sal_Int32 s_nRefCount;
static ::cppu::IPropertyArrayHelper* s_pProps;
static ::osl::Mutex s_aMutex;
public:
OPropertyArrayUsageHelper();
virtual ~OPropertyArrayUsageHelper();
/** call this in the getInfoHelper method of your derived class. The method returns the array helper of the
class, which is created if necessary.
*/
::cppu::IPropertyArrayHelper* getArrayHelper();
protected:
/** used to implement the creation of the array helper which is shared amongst all instances of the class.
This method needs to be implemented in derived classes.
<BR>
The method gets called with s_aMutex acquired.
@return a pointer to the newly created array helper. Must not be NULL.
*/
virtual ::cppu::IPropertyArrayHelper* createArrayHelper() const = 0;
};
template <class TYPE> sal_Int32 OPropertyArrayUsageHelper<TYPE>::s_nRefCount = 0;
template <class TYPE>
::cppu::IPropertyArrayHelper* OPropertyArrayUsageHelper<TYPE>::s_pProps = nullptr;
template <class TYPE>::osl::Mutex OPropertyArrayUsageHelper<TYPE>::s_aMutex;
template <class TYPE> OPropertyArrayUsageHelper<TYPE>::OPropertyArrayUsageHelper()
{
::osl::MutexGuard aGuard(s_aMutex);
++s_nRefCount;
}
template <class TYPE> OPropertyArrayUsageHelper<TYPE>::~OPropertyArrayUsageHelper()
{
::osl::MutexGuard aGuard(s_aMutex);
OSL_ENSURE(s_nRefCount > 0, "OPropertyArrayUsageHelper::~OPropertyArrayUsageHelper : "
"suspicious call : have a refcount of 0 !");
if (!--s_nRefCount)
{
delete s_pProps;
s_pProps = nullptr;
}
}
template <class TYPE>::cppu::IPropertyArrayHelper* OPropertyArrayUsageHelper<TYPE>::getArrayHelper()
{
OSL_ENSURE(
s_nRefCount,
"OPropertyArrayUsageHelper::getArrayHelper : suspicious call : have a refcount of 0 !");
if (!s_pProps)
{
::osl::MutexGuard aGuard(s_aMutex);
if (!s_pProps)
{
s_pProps = createArrayHelper();
OSL_ENSURE(s_pProps, "OPropertyArrayUsageHelper::getArrayHelper : createArrayHelper "
"returned nonsense !");
}
}
return s_pProps;
}
namespace internal
{
template <class T> void implCopySequence(const T* _pSource, T*& _pDest, sal_Int32 _nSourceLen)
{
for (sal_Int32 i = 0; i < _nSourceLen; ++i, ++_pSource, ++_pDest)
*_pDest = *_pSource;
}
}
/// concat two sequences
template <class T>
css::uno::Sequence<T> concatSequences(const css::uno::Sequence<T>& _rLeft,
const css::uno::Sequence<T>& _rRight)
{
sal_Int32 nLeft(_rLeft.getLength()), nRight(_rRight.getLength());
const T* pLeft = _rLeft.getConstArray();
const T* pRight = _rRight.getConstArray();
sal_Int32 nReturnLen(nLeft + nRight);
css::uno::Sequence<T> aReturn(nReturnLen);
T* pReturn = aReturn.getArray();
internal::implCopySequence(pLeft, pReturn, nLeft);
internal::implCopySequence(pRight, pReturn, nRight);
return aReturn;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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