138 lines
4.4 KiB
C++
138 lines
4.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#pragma once
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#include <cppuhelper/propshlp.hxx>
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#include <osl/diagnose.h>
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#include <osl/mutex.hxx>
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namespace cppu
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{
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class IPropertyArrayHelper;
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}
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namespace com::sun::star::lang
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{
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class XComponent;
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}
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namespace connectivity::mysqlc
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{
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/// @throws css::lang::DisposedException
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void checkDisposed(bool _bThrow);
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template <class TYPE> class OPropertyArrayUsageHelper
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{
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protected:
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static sal_Int32 s_nRefCount;
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static ::cppu::IPropertyArrayHelper* s_pProps;
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static ::osl::Mutex s_aMutex;
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public:
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OPropertyArrayUsageHelper();
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virtual ~OPropertyArrayUsageHelper();
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/** call this in the getInfoHelper method of your derived class. The method returns the array helper of the
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class, which is created if necessary.
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*/
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::cppu::IPropertyArrayHelper* getArrayHelper();
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protected:
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/** used to implement the creation of the array helper which is shared amongst all instances of the class.
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This method needs to be implemented in derived classes.
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<BR>
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The method gets called with s_aMutex acquired.
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@return a pointer to the newly created array helper. Must not be NULL.
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*/
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virtual ::cppu::IPropertyArrayHelper* createArrayHelper() const = 0;
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};
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template <class TYPE> sal_Int32 OPropertyArrayUsageHelper<TYPE>::s_nRefCount = 0;
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template <class TYPE>
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::cppu::IPropertyArrayHelper* OPropertyArrayUsageHelper<TYPE>::s_pProps = nullptr;
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template <class TYPE>::osl::Mutex OPropertyArrayUsageHelper<TYPE>::s_aMutex;
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template <class TYPE> OPropertyArrayUsageHelper<TYPE>::OPropertyArrayUsageHelper()
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{
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::osl::MutexGuard aGuard(s_aMutex);
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++s_nRefCount;
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}
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template <class TYPE> OPropertyArrayUsageHelper<TYPE>::~OPropertyArrayUsageHelper()
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{
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::osl::MutexGuard aGuard(s_aMutex);
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OSL_ENSURE(s_nRefCount > 0, "OPropertyArrayUsageHelper::~OPropertyArrayUsageHelper : "
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"suspicious call : have a refcount of 0 !");
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if (!--s_nRefCount)
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{
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delete s_pProps;
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s_pProps = nullptr;
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}
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}
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template <class TYPE>::cppu::IPropertyArrayHelper* OPropertyArrayUsageHelper<TYPE>::getArrayHelper()
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{
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OSL_ENSURE(
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s_nRefCount,
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"OPropertyArrayUsageHelper::getArrayHelper : suspicious call : have a refcount of 0 !");
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if (!s_pProps)
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{
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::osl::MutexGuard aGuard(s_aMutex);
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if (!s_pProps)
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{
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s_pProps = createArrayHelper();
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OSL_ENSURE(s_pProps, "OPropertyArrayUsageHelper::getArrayHelper : createArrayHelper "
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"returned nonsense !");
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}
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}
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return s_pProps;
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}
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namespace internal
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{
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template <class T> void implCopySequence(const T* _pSource, T*& _pDest, sal_Int32 _nSourceLen)
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{
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for (sal_Int32 i = 0; i < _nSourceLen; ++i, ++_pSource, ++_pDest)
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*_pDest = *_pSource;
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}
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}
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/// concat two sequences
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template <class T>
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css::uno::Sequence<T> concatSequences(const css::uno::Sequence<T>& _rLeft,
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const css::uno::Sequence<T>& _rRight)
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{
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sal_Int32 nLeft(_rLeft.getLength()), nRight(_rRight.getLength());
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const T* pLeft = _rLeft.getConstArray();
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const T* pRight = _rRight.getConstArray();
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sal_Int32 nReturnLen(nLeft + nRight);
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css::uno::Sequence<T> aReturn(nReturnLen);
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T* pReturn = aReturn.getArray();
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internal::implCopySequence(pLeft, pReturn, nLeft);
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internal::implCopySequence(pRight, pReturn, nRight);
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return aReturn;
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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