AOO410/main/odk/examples/DevelopersGuide/Database/DriverSkeleton/SServices.cxx

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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
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#include <sal/types.h>
#include "SDriver.hxx"
#include <cppuhelper/factory.hxx>
#include <osl/diagnose.h>

using namespace connectivity::skeleton;
using ::rtl::OUString;
using ::com::sun::star::uno::Reference;
using ::com::sun::star::uno::Sequence;
using ::com::sun::star::registry::XRegistryKey;
using ::com::sun::star::lang::XSingleServiceFactory;
using ::com::sun::star::lang::XMultiServiceFactory;

typedef Reference< XSingleServiceFactory > (SAL_CALL *createFactoryFunc)
		(
			const Reference< XMultiServiceFactory > & rServiceManager,
			const OUString & rComponentName, 
			::cppu::ComponentInstantiation pCreateFunction,
			const Sequence< OUString > & rServiceNames,
			rtl_ModuleCount* _pTemp
		);

//***************************************************************************************
//
// The required C-Api must be provided!
// It contains of 3 special functions that have to be exported.
//

//---------------------------------------------------------------------------------------
void REGISTER_PROVIDER(
		const OUString& aServiceImplName, 
		const Sequence< OUString>& Services, 
		const Reference< ::com::sun::star::registry::XRegistryKey > & xKey)
{
	OUString aMainKeyName;
	aMainKeyName = OUString::createFromAscii("/");
	aMainKeyName += aServiceImplName;
	aMainKeyName += OUString::createFromAscii("/UNO/SERVICES");

	Reference< ::com::sun::star::registry::XRegistryKey >  xNewKey( xKey->createKey(aMainKeyName) );
	OSL_ENSURE(xNewKey.is(), "SKELETON::component_writeInfo : could not create a registry key !");

	for (sal_uInt32 i=0; i<Services.getLength(); ++i)
		xNewKey->createKey(Services[i]);
}


//---------------------------------------------------------------------------------------
struct ProviderRequest
{
	Reference< XSingleServiceFactory > xRet;
	Reference< XMultiServiceFactory > const xServiceManager;
	OUString const sImplementationName;

	ProviderRequest(
		void* pServiceManager,
		sal_Char const* pImplementationName
	)
	: xServiceManager(reinterpret_cast<XMultiServiceFactory*>(pServiceManager))
	, sImplementationName(OUString::createFromAscii(pImplementationName))
	{
	}

	inline
	sal_Bool CREATE_PROVIDER(
				const OUString& Implname, 
				const Sequence< OUString > & Services, 
				::cppu::ComponentInstantiation Factory,
				createFactoryFunc creator
			)
	{
		if (!xRet.is() && (Implname == sImplementationName))
		try																							
		{																								
			xRet = creator( xServiceManager, sImplementationName,Factory, Services,0);	
		}
		catch(...)
		{
		}
		return xRet.is();
	}
	
	void* getProvider() const { return xRet.get(); }
};

//---------------------------------------------------------------------------------------

extern "C" SAL_DLLPUBLIC_EXPORT void SAL_CALL component_getImplementationEnvironment(
				const sal_Char	**ppEnvTypeName,
				uno_Environment	**ppEnv
			)
{
	*ppEnvTypeName = CPPU_CURRENT_LANGUAGE_BINDING_NAME;
}

// This method not longer necessary since OOo 3.4 where the component registration was
// was changed to passive component registration. For more details see
// http://wiki.services.openoffice.org/wiki/Passive_Component_Registration
//---------------------------------------------------------------------------------------
// extern "C" SAL_DLLPUBLIC_EXPORT sal_Bool SAL_CALL component_writeInfo(
// 				void* pServiceManager,
// 				void* pRegistryKey
// 			)
// {
// 	if (pRegistryKey) 
// 	try 
// 	{
// 		Reference< ::com::sun::star::registry::XRegistryKey > xKey(reinterpret_cast< ::com::sun::star::registry::XRegistryKey*>(pRegistryKey));

// 		REGISTER_PROVIDER(
// 			SkeletonDriver::getImplementationName_Static(), 
// 			SkeletonDriver::getSupportedServiceNames_Static(), xKey);		

// 		return sal_True;
// 	}
// 	catch (::com::sun::star::registry::InvalidRegistryException& )
// 	{
// 		OSL_ENSURE(sal_False, "SKELETON::component_writeInfo : could not create a registry key ! ## InvalidRegistryException !");
// 	}

// 	return sal_False;
// }

//---------------------------------------------------------------------------------------
extern "C" SAL_DLLPUBLIC_EXPORT void* SAL_CALL component_getFactory(
					const sal_Char* pImplementationName,
					void* pServiceManager,
					void* pRegistryKey)
{
	void* pRet = 0;
	if (pServiceManager)
	{
		ProviderRequest aReq(pServiceManager,pImplementationName);

		aReq.CREATE_PROVIDER(
			SkeletonDriver::getImplementationName_Static(), 
			SkeletonDriver::getSupportedServiceNames_Static(),
			SkeletonDriver_CreateInstance, ::cppu::createSingleFactory) 
		;

		if(aReq.xRet.is())
			aReq.xRet->acquire();

		pRet = aReq.getProvider();
	}

	return pRet;
};