/usr/include/Wt/Dbo/SqlConnectionPool is in libwtdbo-dev 3.3.4+dfsg-6ubuntu1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 | // This may look like C code, but it's really -*- C++ -*-
/*
* Copyright (C) 2010 Emweb bvba, Kessel-Lo, Belgium.
*
* See the LICENSE file for terms of use.
*/
#ifndef WT_DBO_SQL_CONNECTION_POOL_H_
#define WT_DBO_SQL_CONNECTION_POOL_H_
#include <Wt/Dbo/WDboDllDefs.h>
#include <vector>
namespace Wt {
namespace Dbo {
class SqlConnection;
/*! \class SqlConnectionPool Wt/Dbo/SqlConnectionPool Wt/Dbo/SqlConnectionPool
* \brief Abstract base class for a SQL connection pool.
*
* An sql connection pool manages a pool of connections. It is shared
* between multiple sessions to allow these sessions to use a
* connection while handling a transaction. Note that a session only
* needs a connection while in-transaction, and thus you only need as
* much connections as the number of concurrent transactions.
*
* \ingroup dbo
*/
class WTDBO_API SqlConnectionPool
{
public:
/*! \brief Destructor.
*/
virtual ~SqlConnectionPool();
/*! \brief Uses a connection from the pool.
*
* This returns a connection from the pool that can be used. If the
* pool has no more connection available, the pool may decide to
* grow or block until a connection is returned.
*
* This method is called by a Session when a new transaction is
* started.
*/
virtual SqlConnection *getConnection() = 0;
/*! \brief Returns a connection to the pool.
*
* This returns a connection to the pool. This method is called by a
* Session after a transaction has been finished.
*/
virtual void returnConnection(SqlConnection *) = 0;
/*! \brief Prepares all connections in the pool for dropping the tables.
*/
virtual void prepareForDropTables() const = 0;
};
}
}
#endif // WT_DBO_SQL_CONNECTION_POOL_H_
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