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Diffstat (limited to '')
-rw-r--r-- | connectivity/source/drivers/mysqlc/mysqlc_subcomponent.hxx | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/connectivity/source/drivers/mysqlc/mysqlc_subcomponent.hxx b/connectivity/source/drivers/mysqlc/mysqlc_subcomponent.hxx new file mode 100644 index 000000000..edba70a93 --- /dev/null +++ b/connectivity/source/drivers/mysqlc/mysqlc_subcomponent.hxx @@ -0,0 +1,138 @@ +/* -*- 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: */ |