Return to pa_db_manager.h CVS log

Up to [parser3project] / parser3 / src / include

Annotation of parser3/src/include/pa_db_manager.h, revision 1.2

1.1       parser      1: /** @file
                      2:        Parser: sql driver manager decl.
                      3:        global sql driver manager, must be thread-safe
                      4: 
                      5:        Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
                      6:        Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
                      7: 
1.2     ! parser      8:        $Id: pa_db_manager.h,v 1.1 2001/10/22 16:44:42 parser Exp $
1.1       parser      9: */
                     10: 
                     11: #ifndef PA_DB_DRIVER_MANAGER_H
                     12: #define PA_DB_DRIVER_MANAGER_H
                     13: 
                     14: #include "pa_config_includes.h"
                     15: #include "pa_pool.h"
                     16: #include "pa_hash.h"
                     17: 
                     18: #ifdef HAVE_DB_H
                     19: #      include <db.h>
                     20: #endif
                     21: 
                     22: // defines
                     23: 
                     24: // forwards
                     25: 
                     26: class DB_Connection;
                     27: 
                     28: /// sql driver manager
                     29: class DB_Manager : public Pooled {
                     30:        friend DB_Connection;
                     31: public:
                     32: 
                     33:        DB_Manager(Pool& pool);
                     34:        ~DB_Manager();
                     35: 
                     36:        /** 
                     37:                connect to specified file_spec, 
                     38:                using driver dynamic library found in table, if not loaded yet
                     39:                checks driver version
                     40:        */
                     41:        DB_Connection& get_connection(const String& file_spec, const String& request_origin);
1.2     ! parser     42:        void clear_dbfile(const String& file_spec);
1.1       parser     43: 
                     44: private: // connection cache
                     45: 
                     46:        DB_Connection *get_connection_from_cache(const String& file_spec);
                     47:        void put_connection_to_cache(const String& file_spec, DB_Connection& connection);
                     48:        void maybe_expire_connection_cache();
                     49: private:
                     50:        time_t prev_expiration_pass_time;
                     51: 
                     52: private: // for DB_Connection
                     53: 
                     54:        /// caches connection
                     55:        void close_connection(const String& file_spec, DB_Connection& connection);
                     56: 
                     57: private:
                     58: 
                     59:        Hash connection_cache;
                     60:        DB_ENV dbenv;
                     61: 
                     62: private:
                     63: 
1.2     ! parser     64:        void check(const char *operation, const String *source, int error);
1.1       parser     65: };
                     66: 
                     67: /// global
                     68: extern DB_Manager *DB_manager;
                     69: 
                     70: #endif