xref: /aoo42x/main/dbaccess/source/inc/registrationhelper.hxx (revision 2e2212a7)

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 *
 * 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
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
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 *************************************************************/



#ifndef _REGISTRATIONHELPER_INCLUDED_INDIRECTLY_
#error "don't include this file directly! use dbu_reghelper.hxx instead!"
#endif

typedef ::com::sun::star::uno::Reference< ::com::sun::star::lang::XSingleServiceFactory > (SAL_CALL *FactoryInstantiation)
		(
			const ::com::sun::star::uno::Reference< ::com::sun::star::lang::XMultiServiceFactory >& _rServiceManager,
			const ::rtl::OUString & _rComponentName,
			::cppu::ComponentInstantiation _pCreateFunction,
			const ::com::sun::star::uno::Sequence< ::rtl::OUString > & _rServiceNames,
			rtl_ModuleCount* _p
		);

//==========================================================================
class OModuleRegistration
{
	static	::com::sun::star::uno::Sequence< ::rtl::OUString >*
		s_pImplementationNames;
	static	::com::sun::star::uno::Sequence< ::com::sun::star::uno::Sequence< ::rtl::OUString > >*
		s_pSupportedServices;
	static	::com::sun::star::uno::Sequence< sal_Int64 >*
		s_pCreationFunctionPointers;
	static	::com::sun::star::uno::Sequence< sal_Int64 >*
		s_pFactoryFunctionPointers;

	// no direct instantiation, only static members/methods
	OModuleRegistration() { }

public:
	/** register a component implementing a service with the given data.
		@param		_rImplementationName		the implementation name of the component
		@param		_rServiceNames				the services the component supports
		@param		_pCreateFunction			a function for creating an instance of the component
		@param		_pFactoryFunction			a function for creating a factory for that component
		@see revokeComponent
	*/
	static void registerComponent(
		const ::rtl::OUString& _rImplementationName,
		const ::com::sun::star::uno::Sequence< ::rtl::OUString >& _rServiceNames,
		::cppu::ComponentInstantiation _pCreateFunction,
		FactoryInstantiation _pFactoryFunction);

	/** revoke the registration for the specified component
		@param		_rImplementationName		the implementation name of the component
	*/
	static void revokeComponent(
		const ::rtl::OUString& _rImplementationName);

	/** creates a Factory for the component with the given implementation name. Usually used from within component_getFactory.
		@param		_rxServiceManager		a pointer to an XMultiServiceFactory interface as got in component_getFactory
		@param		_pImplementationName	the implementation name of the component
		@return								the XInterface access to a factory for the component
	*/
	static ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface > getComponentFactory(
		const ::rtl::OUString& _rImplementationName,
		const ::com::sun::star::uno::Reference< ::com::sun::star::lang::XMultiServiceFactory >& _rxServiceManager
		);
};

//==========================================================================
template <class TYPE>
class OMultiInstanceAutoRegistration
{
public:
	/** assumed that the template argument has the three methods<BR>
		<code>static ::rtl::OUString getImplementationName_Static()</code><BR>
		<code>static ::com::sun::star::uno::Sequence< ::rtl::OUString > getSupportedServiceNames_Static()</code><BR>
		and<BR>
		<code>static ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >
			Create(const ::com::sun::star::uno::Reference< ::com::sun::star::lang::XMultiServiceFactory >&)</code><BR>
		the instantiation of this object will automatically register the class via <code>OModuleRegistration::registerComponent</code>.
		The factory creation function used is <code>::cppu::createSingleFactory</code>.<BR>
		@see OOneInstanceAutoRegistration
	*/
	OMultiInstanceAutoRegistration();
	~OMultiInstanceAutoRegistration();
};

template <class TYPE>
OMultiInstanceAutoRegistration<TYPE>::OMultiInstanceAutoRegistration()
{
	OModuleRegistration::registerComponent(
		TYPE::getImplementationName_Static(),
		TYPE::getSupportedServiceNames_Static(),
		TYPE::Create,
		::cppu::createSingleFactory
		);
}

template <class TYPE>
OMultiInstanceAutoRegistration<TYPE>::~OMultiInstanceAutoRegistration()
{
	OModuleRegistration::revokeComponent(TYPE::getImplementationName_Static());
}

//==========================================================================
template <class TYPE>
class OOneInstanceAutoRegistration
{
public:
	/** provided that the template argument has three methods<BR>
		<code>static ::rtl::OUString getImplementationName_Static()</code><BR>
		<code>static ::com::sun::star::uno::Sequence< ::rtl::OUString > getSupportedServiceNames_Static()</code><BR>
		and<BR>
		<code>static ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >
			Create(const ::com::sun::star::uno::Reference< ::com::sun::star::lang::XMultiServiceFactory >&)</code><BR>
		the instantiation of this object will automatically register the class via <code>OModuleRegistration::registerComponent</code>.
		The factory creation function used is <code>::cppu::createSingleFactory</code>.<BR>
		@see OMultiInstanceAutoRegistration
	*/
	OOneInstanceAutoRegistration();
	~OOneInstanceAutoRegistration();
};

template <class TYPE>
OOneInstanceAutoRegistration<TYPE>::OOneInstanceAutoRegistration()
{
	OModuleRegistration::registerComponent(
		TYPE::getImplementationName_Static(),
		TYPE::getSupportedServiceNames_Static(),
		TYPE::Create,
		::cppu::createOneInstanceFactory
		);
}

template <class TYPE>
OOneInstanceAutoRegistration<TYPE>::~OOneInstanceAutoRegistration()
{
	OModuleRegistration::revokeComponent(TYPE::getImplementationName_Static());
}