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auto-init for db back-ends

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Auto initialization for all DB back-ends and some tidy-up for network
windows auto initialization
This commit is contained in:
aleks-f
2013-02-10 09:06:54 -06:00
parent c7cb7e4498
commit 4bcddad43e
7 changed files with 149 additions and 28 deletions
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57
Data/MySQL/include/Poco/Data/MySQL/Connector.h
View File

@@ -44,6 +44,12 @@
#include "Poco/Data/Connector.h"
// Note: to avoid static (de)initialization problems,
// during connector automatic (un)registration, it is
// best to have this as a macro.
#define POCO_DATA_MYSQL_CONNECTOR_NAME "mysql"
namespace Poco {
namespace Data {
namespace MySQL {
@@ -80,4 +86,55 @@ public:
} } } // namespace Poco::Data::MySQL
//
// Automatic Connector registration
//
struct MySQL_API MySQLConnectorRegistrator
/// Connector registering class.
/// A global instance of this class is instantiated
/// with sole purpose to automatically register the
/// MySQL connector with central Poco Data registry.
{
MySQLConnectorRegistrator()
/// Calls Poco::Data::MySQL::registerConnector();
{
Poco::Data::MySQL::Connector::registerConnector();
}
~MySQLConnectorRegistrator()
/// Calls Poco::Data::MySQL::unregisterConnector();
{
Poco::Data::MySQL::Connector::unregisterConnector();
}
};
#if !defined(POCO_NO_AUTOMATIC_LIB_INIT)
#if defined(POCO_OS_FAMILY_WINDOWS)
extern "C" const struct MySQL_API MySQLConnectorRegistrator pocoMySQLConnectorRegistrator;
#if defined(MySQL_EXPORTS)
#if defined(_WIN64)
#define POCO_DATA_MYSQL_FORCE_SYMBOL(s) __pragma(comment (linker, "/export:"#s))
#elif defined(_WIN32)
#define POCO_DATA_MYSQL_FORCE_SYMBOL(s) __pragma(comment (linker, "/export:_"#s))
#endif
#else // !MySQL_EXPORTS
#if defined(_WIN64)
#define POCO_DATA_MYSQL_FORCE_SYMBOL(s) __pragma(comment (linker, "/include:"#s))
#elif defined(_WIN32)
#define POCO_DATA_MYSQL_FORCE_SYMBOL(s) __pragma(comment (linker, "/include:_"#s))
#endif
#endif // MySQL_EXPORTS
#else // !POCO_OS_FAMILY_WINDOWS
#define POCO_DATA_MYSQL_FORCE_SYMBOL(s) extern "C" const struct MySQLConnectorRegistrator s;
#endif // POCO_OS_FAMILY_WINDOWS
POCO_DATA_MYSQL_FORCE_SYMBOL(pocoMySQLConnectorRegistrator)
#endif // POCO_NO_AUTOMATIC_LIB_INIT
//
// End automatic Connector registration
//
#endif // Data_MySQL_Connector_INCLUDED

11
Data/MySQL/src/Connector.cpp
View File

@@ -38,16 +38,18 @@
#include "Poco/Data/MySQL/SessionImpl.h"
#include "Poco/Data/SessionFactory.h"
#include "Poco/Exception.h"
#include <mysql.h>
const MySQLConnectorRegistrator pocoMySQLConnectorRegistrator;
namespace Poco {
namespace Data {
namespace MySQL {
std::string Connector::KEY("mysql");
std::string Connector::KEY(POCO_DATA_MYSQL_CONNECTOR_NAME);
Connector::Connector()
@@ -61,7 +63,8 @@ Connector::~Connector()
const std::string& Connector::name() const
{
return KEY;
static const std::string n(POCO_DATA_MYSQL_CONNECTOR_NAME);
return n;
}
Poco::AutoPtr<Poco::Data::SessionImpl> Connector::createSession(const std::string& connectionString,
@@ -84,7 +87,7 @@ void Connector::registerConnector()
void Connector::unregisterConnector()
{
Poco::Data::SessionFactory::instance().remove(KEY);
Poco::Data::SessionFactory::instance().remove(POCO_DATA_MYSQL_CONNECTOR_NAME);
mysql_library_end();
}