/usr/include/Wt/Dbo/FixedSqlConnectionPool 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 | // 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_FIXED_SQL_CONNECTION_POOL_H_
#define WT_DBO_FIXED_SQL_CONNECTION_POOL_H_
#include <Wt/Dbo/SqlConnectionPool>
#include <vector>
namespace Wt {
namespace Dbo {
/*! \class FixedSqlConnectionPool Wt/Dbo/FixedSqlConnectionPool Wt/Dbo/FixedSqlConnectionPool
* \brief A connection pool of fixed size.
*
* This provides a connection pool of fixed size: its size is determined at
* startup time, and the pool will not grow as more connections are needed.
*
* This is adequate when the number of threads (which need different
* connections to work with) is also bounded, like when using a fixed
* size thread pool. This is for example the case when used in
* conjunction with %Wt. Note that you do not need as many connections
* as sessions, since Session will only use a connection while
* processing a transaction.
*
* \ingroup dbo
*/
class WTDBO_API FixedSqlConnectionPool : public SqlConnectionPool
{
public:
/*! \brief Creates a fixed connection pool.
*
* The pool is initialized with the provided \p connection, which is
* cloned (\p size - 1) times.
*
* The pool thus takes ownership of the given connection.
*/
FixedSqlConnectionPool(SqlConnection *connection, int size);
virtual ~FixedSqlConnectionPool();
virtual SqlConnection *getConnection();
virtual void returnConnection(SqlConnection *);
virtual void prepareForDropTables() const;
private:
struct Impl;
Impl *impl_;
};
}
}
#endif // WT_DBO_SQL_CONNECTION_POOL_H_
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