gnc-backend-dbi.h File Reference

load and save data to SQL via libdbi More...

#include <gmodule.h>

Go to the source code of this file.

Functions
void	gnc_module_init_backend_dbi (void)
void	gnc_module_finalize_backend_dbi (void)
G_MODULE_EXPORT void	qof_backend_module_init (void)
G_MODULE_EXPORT void	qof_backend_module_finalize (void)

Detailed Description

load and save data to SQL via libdbi

Author

Copyright (c) 2006-2008 Phil Longstaff plong.nosp@m.staf.nosp@m.f@rog.nosp@m.ers..nosp@m.com

This file implements the top-level QofBackend API for saving/ restoring data to/from an SQL database via libdbi

Definition in file gnc-backend-dbi.h.

Function Documentation

void gnc_module_finalize_backend_dbi

(

void

)

Shutdown function which can be used when this module is statically linked into the application.

Definition at line 2001 of file gnc-backend-dbi.c.

{
#if HAVE_LIBDBI_R
  if (dbi_instance)
  {
      dbi_shutdown_r(dbi_instance);
      dbi_instance = NULL;
  }
#else
    dbi_shutdown();
#endif
}

void gnc_module_init_backend_dbi

(

void

)

Initialization function which can be used when this module is statically linked into the application.

Definition at line 1868 of file gnc-backend-dbi.c.

{
    QofBackendProvider *prov;
    const gchar* driver_dir;
    int num_drivers;
    gboolean have_sqlite3_driver = FALSE;
    gboolean have_mysql_driver = FALSE;
    gboolean have_pgsql_driver = FALSE;

    /* Initialize libdbi and see which drivers are available.  Only register qof backends which
       have drivers available. */
    driver_dir = g_getenv( "GNC_DBD_DIR" );
    if ( driver_dir == NULL )
    {
        PINFO( "GNC_DBD_DIR not set: using libdbi built-in default\n");
    }

    /* dbi_initialize returns -1 in case of errors */
    #if HAVE_LIBDBI_R
    if (dbi_instance)
        return;
    num_drivers = dbi_initialize_r( driver_dir, &dbi_instance );
    #else
    num_drivers = dbi_initialize( driver_dir );
    #endif
    if ( num_drivers <= 0 )
    {
        PWARN( "No DBD drivers found\n" );
    }
    else
    {
        dbi_driver driver = NULL;
        PINFO( "%d DBD drivers found\n", num_drivers );

        do
        {
            #if HAVE_LIBDBI_R
            driver = dbi_driver_list_r( driver, dbi_instance );
            #else
            driver = dbi_driver_list( driver );
            #endif

            if ( driver != NULL )
            {
                const gchar* name = dbi_driver_get_name( driver );

                PINFO( "Driver: %s\n", name );
                if ( strcmp( name, "sqlite3" ) == 0 )
                {
                    have_sqlite3_driver = TRUE;
                }
                else if ( strcmp( name, "mysql" ) == 0 )
                {
                    have_mysql_driver = TRUE;
                }
                else if ( strcmp( name, "pgsql" ) == 0 )
                {
                    have_pgsql_driver = TRUE;
                }
            }
        }
        while ( driver != NULL );
    }

    if ( have_sqlite3_driver )
    {
        prov = g_new0( QofBackendProvider, 1 );
        g_assert( prov != NULL );

        prov->provider_name = "GnuCash Libdbi (SQLITE3) Backend";
        prov->access_method = FILE_URI_TYPE;
        prov->backend_new = gnc_dbi_backend_sqlite3_new;
        prov->provider_free = gnc_dbi_provider_free;
        prov->check_data_type = gnc_dbi_check_sqlite3_file;
        qof_backend_register_provider( prov );

        prov = g_new0( QofBackendProvider, 1 );
        g_assert( prov != NULL );

        prov->provider_name = "GnuCash Libdbi (SQLITE3) Backend";
        prov->access_method = SQLITE3_URI_TYPE;
        prov->backend_new = gnc_dbi_backend_sqlite3_new;
        prov->provider_free = gnc_dbi_provider_free;
        prov->check_data_type = gnc_dbi_check_sqlite3_file;
        qof_backend_register_provider( prov );
    }

    if ( have_mysql_driver )
    {
        prov = g_new0( QofBackendProvider, 1 );
        g_assert( prov != NULL );

        prov->provider_name = "GnuCash Libdbi (MYSQL) Backend";
        prov->access_method = "mysql";
        prov->backend_new = gnc_dbi_backend_mysql_new;
        prov->provider_free = gnc_dbi_provider_free;
        prov->check_data_type = NULL;
        qof_backend_register_provider( prov );
    }

    if ( have_pgsql_driver )
    {
        prov = g_new0( QofBackendProvider, 1 );
        g_assert( prov != NULL );

        prov->provider_name = "GnuCash Libdbi (POSTGRESQL) Backend";
        prov->access_method = "postgres";
        prov->backend_new = gnc_dbi_backend_postgres_new;
        prov->provider_free = gnc_dbi_provider_free;
        prov->check_data_type = NULL;
        qof_backend_register_provider( prov );
    }

    /* If needed, set log level to DEBUG so that SQl statements will be put into
       the gnucash.trace file. */
    /*    qof_log_set_level( log_module, QOF_LOG_DEBUG ); */
}

G_MODULE_EXPORT void qof_backend_module_init

(

void

)

This is the standarized initialization function of a qof_backend GModule, but compiling this can be disabled by defining GNC_NO_LOADABLE_MODULES.

Definition at line 1988 of file gnc-backend-dbi.c.

{
    gnc_module_init_backend_dbi();
}