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b49ac67225
* remove leftover progen files * remove Data sources and turn headers into forwards * add SQL files #2059 * Data2sql: adjust Travis, AppVeyor & Makefiles (#2069) * Replace Data by SQL * Replace Data by SQL * Replace Data by SQL * Replace Data by SQL * fix header forwarding * Data2sql: Fixes for complete Travis CI success (#2071) * Replace Data by SQL * Replace Data by SQL * Replace Data by SQL * Replace Data by SQL * Replace Data by SQL * Restore DataFormatException * Replace Data by SQL * Replace Data by SQL * Replace Data by SQL * Replace Data by SQL * construct RowFilter from RecordSet reference instead of pointer * pass Container ref instead of ptr to Column * elimitate g++ warnings * SQL: remove raw pointers from interfaces #2094; add constness and move ops where appropriate * tidy up Postgres * ODBC fixes
100 lines
2.9 KiB
C++
100 lines
2.9 KiB
C++
//
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// SessionFactory.h
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//
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// Library: Data
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// Package: DataCore
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// Module: SessionFactory
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//
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// Definition of the SessionFactory class.
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//
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// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// SPDX-License-Identifier: BSL-1.0
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//
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#ifndef SQL_SessionFactory_INCLUDED
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#define SQL_SessionFactory_INCLUDED
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#include "Poco/SQL/SQL.h"
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#include "Poco/SQL/Connector.h"
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#include "Poco/SQL/Session.h"
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#include "Poco/Mutex.h"
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#include "Poco/SharedPtr.h"
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#include "Poco/String.h"
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#include <map>
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namespace Poco {
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namespace SQL {
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class Poco_SQL_API SessionFactory
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/// A SessionFactory is a singleton class that stores Connectors and allows to
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/// create Sessions of the required type:
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///
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/// Session ses(SessionFactory::instance().create(connector, connectionString));
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///
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/// where the first param presents the type of session one wants to create (e.g. for SQLite one would choose "SQLite")
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/// and the second param is the connection string that the connector requires to connect to the database.
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///
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/// A concrete example to open an SQLite database stored in the file "dummy.db" would be
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///
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/// Session ses(SessionFactory::instance().create(SQLite::Connector::KEY, "dummy.db"));
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///
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/// An even simpler way to create a session is to use the two argument constructor of Session, which
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/// automatically invokes the SessionFactory:
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///
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/// Session ses("SQLite", "dummy.db");
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{
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public:
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static SessionFactory& instance();
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/// returns the static instance of the singleton.
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void add(Connector::Ptr pIn);
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/// Registers a Connector under its key at the factory. If a registration for that
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/// key is already active, the first registration will be kept, only its reference count will be increased.
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/// Always takes ownership of parameter pIn.
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void remove(const std::string& key);
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/// Lowers the reference count for the Connector registered under that key. If the count reaches zero,
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/// the object is removed.
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Session create(const std::string& key,
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const std::string& connectionString,
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std::size_t timeout = Session::LOGIN_TIMEOUT_DEFAULT);
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/// Creates a Session for the given key with the connectionString. Throws an Poco:SQL::UnknownDataBaseException
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/// if no Connector is registered for that key.
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Session create(const std::string& uri,
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std::size_t timeout = Session::LOGIN_TIMEOUT_DEFAULT);
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/// Creates a Session for the given URI (must be in key:///connectionString format).
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/// Throws a Poco:SQL::UnknownDataBaseException if no Connector is registered for the key.
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private:
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SessionFactory();
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~SessionFactory();
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SessionFactory(const SessionFactory&);
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SessionFactory& operator = (const SessionFactory&);
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struct SessionInfo
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{
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int cnt;
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Connector::Ptr ptrSI;
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SessionInfo(Connector::Ptr pSI);
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};
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typedef std::map<std::string, SessionInfo, Poco::CILess> Connectors;
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Connectors _connectors;
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Poco::FastMutex _mutex;
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};
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} } // namespace Poco::SQL
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#endif // Data_SessionFactory_INCLUDED
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