mirror of
https://github.com/FirebirdSQL/firebird.git
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150 lines
3.3 KiB
C++
150 lines
3.3 KiB
C++
/*
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* PROGRAM: Firebird interface.
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* MODULE: ImplementHelper.h
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* DESCRIPTION: Tools to help access plugins.
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*
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* The contents of this file are subject to the Initial
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* Developer's Public License Version 1.0 (the "License");
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* you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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* http://www.ibphoenix.com/main.nfs?a=ibphoenix&page=ibp_idpl.
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*
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* Software distributed under the License is distributed AS IS,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied.
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* See the License for the specific language governing rights
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* and limitations under the License.
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*
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* The Original Code was created by Alex Peshkov
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* for the Firebird Open Source RDBMS project.
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*
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* Copyright (c) 2010 Alex Peshkov <peshkoff at mail.ru>
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* and all contributors signed below.
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*
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* All Rights Reserved.
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* Contributor(s): ______________________________________.
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*
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*
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*/
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#ifndef FB_COMMON_CLASSES_GET_PLUGINS
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#define FB_COMMON_CLASSES_GET_PLUGINS
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#include "../common/classes/ImplementHelper.h"
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#include "../common/config/config.h"
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#include "../common/StatusHolder.h"
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namespace Firebird {
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// Template to help with loop in the set of plugins
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template <typename P>
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class GetPlugins
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{
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public:
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GetPlugins(unsigned int interfaceType, unsigned int desiredVersion,
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UpgradeInfo* ui, const char* namesList = NULL)
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: masterInterface(), pluginInterface(masterInterface),
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pluginSet(NULL), currentPlugin(NULL)
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{
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LocalStatus status;
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pluginSet = pluginInterface->getPlugins(&status, interfaceType,
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(namesList ? namesList : Config::getPlugins(interfaceType)),
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desiredVersion, ui, NULL);
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if (!pluginSet)
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{
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fb_assert(!status.isSuccess());
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status_exception::raise(status.get());
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}
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pluginSet->release();
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getPlugin();
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}
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GetPlugins(unsigned int interfaceType, unsigned int desiredVersion, UpgradeInfo* ui,
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Config* knownConfig, const char* namesList = NULL)
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: masterInterface(), pluginInterface(masterInterface),
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pluginSet(NULL), currentPlugin(NULL)
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{
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LocalStatus status;
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pluginSet = pluginInterface->getPlugins(&status, interfaceType,
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(namesList ? namesList : Config::getPlugins(interfaceType)),
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desiredVersion, ui, new FirebirdConf(knownConfig));
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if (!pluginSet)
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{
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fb_assert(!status.isSuccess());
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status_exception::raise(status.get());
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}
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pluginSet->release();
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getPlugin();
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}
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bool hasData()
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{
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return currentPlugin;
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}
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const char* name()
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{
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return hasData() ? pluginSet->getName() : NULL;
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}
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const char* module()
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{
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return hasData() ? pluginSet->getModule() : NULL;
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}
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P* plugin()
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{
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return currentPlugin;
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}
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void next()
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{
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if (hasData())
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{
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pluginInterface->releasePlugin(currentPlugin);
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currentPlugin = NULL;
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pluginSet->next();
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getPlugin();
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}
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}
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void set(const char* newName)
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{
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if (hasData())
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{
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pluginInterface->releasePlugin(currentPlugin);
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currentPlugin = NULL;
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}
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pluginSet->set(newName);
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getPlugin();
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}
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~GetPlugins()
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{
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if (hasData())
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{
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pluginInterface->releasePlugin(currentPlugin);
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currentPlugin = NULL;
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}
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}
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private:
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MasterInterfacePtr masterInterface;
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PluginManagerInterfacePtr pluginInterface;
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RefPtr<IPluginSet> pluginSet;
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P* currentPlugin;
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void getPlugin()
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{
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currentPlugin = (P*) pluginSet->getPlugin();
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}
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};
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} // namespace Firebird
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#endif // FB_COMMON_CLASSES_GET_PLUGINS
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