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+//
+// SessionImpl.h
+//
+// Library: Data/SQLite
+// Package: SQLite
+// Module:  SessionImpl
+//
+// Definition of the SessionImpl class.
+//
+// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#ifndef Data_SQLite_SessionImpl_INCLUDED
+#define Data_SQLite_SessionImpl_INCLUDED
+
+
+#include "Poco/Data/SQLite/SQLite.h"
+#include "Poco/Data/SQLite/Connector.h"
+#include "Poco/Data/SQLite/Binder.h"
+#include "Poco/Data/AbstractSessionImpl.h"
+#include "Poco/SharedPtr.h"
+#include "Poco/Mutex.h"
+
+
+extern "C"
+{
+	typedef struct sqlite3 sqlite3;
+}
+
+
+namespace Poco {
+namespace Data {
+namespace SQLite {
+
+
+class SQLite_API SessionImpl: public Poco::Data::AbstractSessionImpl<SessionImpl>
+	/// Implements SessionImpl interface.
+{
+public:
+	SessionImpl(const std::string& fileName,
+		std::size_t loginTimeout = LOGIN_TIMEOUT_DEFAULT);
+		/// Creates the SessionImpl. Opens a connection to the database.
+
+	~SessionImpl();
+		/// Destroys the SessionImpl.
+
+	Poco::Data::StatementImpl* createStatementImpl();
+		/// Returns an SQLite StatementImpl.
+
+	void open(const std::string& connect = "");
+		/// Opens a connection to the Database.
+		/// 
+		/// An in-memory system database (sys), with a single table (dual) 
+		/// containing single field (dummy) is attached to the database.
+		/// The in-memory system database is used to force change count
+		/// to be reset to zero on every new query (or batch of queries) 
+		/// execution. Without this functionality, select statements
+		/// executions that do not return any rows return the count of
+		/// changes effected by the most recent insert, update or delete.
+		/// In-memory system database can be queried and updated but can not
+		/// be dropped. It may be used for other purposes 
+		/// in the future.
+
+	void close();
+		/// Closes the session.
+
+	bool isConnected();
+		/// Returns true if connected, false otherwise.
+
+	void setConnectionTimeout(std::size_t timeout);
+		/// Sets the session connection timeout value.
+		/// Timeout value is in seconds.
+
+	std::size_t getConnectionTimeout();
+		/// Returns the session connection timeout value.
+		/// Timeout value is in seconds.
+
+	void begin();
+		/// Starts a transaction.
+
+	void commit();
+		/// Commits and ends a transaction.
+
+	void rollback();
+		/// Aborts a transaction.
+
+	bool canTransact();
+		/// Returns true if session has transaction capabilities.
+
+	bool isTransaction();
+		/// Returns true iff a transaction is a transaction is in progress, false otherwise.
+
+	void setTransactionIsolation(Poco::UInt32 ti);
+		/// Sets the transaction isolation level.
+
+	Poco::UInt32 getTransactionIsolation();
+		/// Returns the transaction isolation level.
+
+	bool hasTransactionIsolation(Poco::UInt32 ti);
+		/// Returns true iff the transaction isolation level corresponding
+		/// to the supplied bitmask is supported.
+
+	bool isTransactionIsolation(Poco::UInt32 ti);
+		/// Returns true iff the transaction isolation level corresponds
+		/// to the supplied bitmask.
+
+	void autoCommit(const std::string&, bool val);
+		/// Sets autocommit property for the session.
+
+	bool isAutoCommit(const std::string& name="");
+		/// Returns autocommit property value.
+
+	const std::string& connectorName() const;
+		/// Returns the name of the connector.
+
+protected:
+	void setConnectionTimeout(const std::string& prop, const Poco::Any& value);
+	Poco::Any getConnectionTimeout(const std::string& prop);
+
+private:
+	std::string _connector;
+	sqlite3*    _pDB;
+	bool        _connected;
+	bool        _isTransaction;
+	int         _timeout;
+	Poco::Mutex _mutex;
+
+	static const std::string DEFERRED_BEGIN_TRANSACTION;
+	static const std::string COMMIT_TRANSACTION;
+	static const std::string ABORT_TRANSACTION;
+};
+
+
+//
+// inlines
+//
+inline bool SessionImpl::canTransact()
+{
+	return true;
+}
+
+
+inline 	bool SessionImpl::isTransaction()
+{
+	return _isTransaction;
+}
+
+
+inline const std::string& SessionImpl::connectorName() const
+{
+	return _connector;
+}
+
+
+inline std::size_t SessionImpl::getConnectionTimeout()
+{
+	return static_cast<std::size_t>(_timeout/1000);
+}
+
+
+} } } // namespace Poco::Data::SQLite
+
+
+#endif // Data_SQLite_SessionImpl_INCLUDED