/usr/include/odb/connection.hxx is in libodb-dev 2.4.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// copyright : Copyright (c) 2005-2015 Code Synthesis Tools CC
// license : GNU GPL v2; see accompanying LICENSE file
#ifndef ODB_CONNECTION_HXX
#define ODB_CONNECTION_HXX
#include <odb/pre.hxx>
#include <map>
#include <string>
#include <memory> // std::auto_ptr, std::unique_ptr
#include <cstddef> // std::size_t
#include <typeinfo>
#include <odb/forward.hxx>
#include <odb/traits.hxx>
#include <odb/query.hxx>
#include <odb/prepared-query.hxx>
#include <odb/details/config.hxx> // ODB_CXX11
#include <odb/details/export.hxx>
#include <odb/details/c-string.hxx>
#include <odb/details/shared-ptr.hxx>
namespace odb
{
class transaction_impl;
class connection;
typedef details::shared_ptr<connection> connection_ptr;
class LIBODB_EXPORT connection: public details::shared_base
{
public:
typedef odb::database database_type;
database_type&
database ();
// Transactions.
//
public:
virtual transaction_impl*
begin () = 0;
// Native database statement execution. Note that unlike the
// versions in the database class, these can be executed
// without a transaction.
//
public:
unsigned long long
execute (const char* statement);
unsigned long long
execute (const std::string& statement);
virtual unsigned long long
execute (const char* statement, std::size_t length) = 0;
// Query preparation.
//
public:
template <typename T>
prepared_query<T>
prepare_query (const char* name, const char*);
template <typename T>
prepared_query<T>
prepare_query (const char* name, const std::string&);
template <typename T>
prepared_query<T>
prepare_query (const char* name, const query<T>&);
template <typename T>
void
cache_query (const prepared_query<T>&);
template <typename T, typename P>
void
cache_query (const prepared_query<T>&, std::auto_ptr<P> params);
#ifdef ODB_CXX11
template <typename T, typename P>
void
cache_query (const prepared_query<T>&, std::unique_ptr<P> params);
#endif
template <typename T>
prepared_query<T>
lookup_query (const char* name) const;
template <typename T, typename P>
prepared_query<T>
lookup_query (const char* name, P*& params) const;
// SQL statement tracing.
//
public:
typedef odb::tracer tracer_type;
void
tracer (tracer_type&);
void
tracer (tracer_type*);
tracer_type*
tracer () const;
public:
// Store the transaction-spacific tracer in the connection. If we
// were to store it in the transaction, then in order to check if
// it was set, we would need to get the transaction instance using
// the current() API. But that requires a TLS lookup, which can be
// slow.
//
tracer_type*
transaction_tracer () const;
public:
virtual
~connection ();
// Recycle the connection to be used by another thread. This call
// invalidates uncached prepared queries.
//
void
recycle ();
protected:
connection (database_type&);
template <typename T,
database_id DB,
class_kind kind = class_traits<T>::kind>
struct query_;
virtual void
cache_query_ (prepared_query_impl* pq,
const std::type_info& ti,
void* params,
const std::type_info* params_info,
void (*params_deleter) (void*));
prepared_query_impl*
lookup_query_ (const char* name,
const std::type_info& ti,
void** params, // out
const std::type_info* params_info) const;
template <typename P>
static void
params_deleter (void*);
private:
connection (const connection&);
connection& operator= (const connection&);
// Prepared query cache.
//
protected:
struct prepared_entry_type
{
details::shared_ptr<prepared_query_impl> prep_query;
const std::type_info* type_info;
void* params;
const std::type_info* params_info;
void (*params_deleter) (void*);
};
typedef
std::map<const char*, prepared_entry_type, details::c_string_comparator>
prepared_map_type;
prepared_map_type prepared_map_;
void
clear_prepared_map ();
protected:
database_type& database_;
tracer_type* tracer_;
// Active query result list.
//
protected:
friend class result_impl;
result_impl* results_;
void
invalidate_results ();
// Prepared but uncached query list (cached ones are stored in
// prepared_map_).
//
protected:
friend class prepared_query_impl;
prepared_query_impl* prepared_queries_;
protected:
friend class transaction;
tracer_type* transaction_tracer_;
};
}
#include <odb/connection.ixx>
#include <odb/connection.txx>
#include <odb/post.hxx>
#endif // ODB_CONNECTION_HXX
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