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)
	Initialization function which can be used when this module is statically linked into the application. More...
void	gnc_module_finalize_backend_dbi (void)
	Shutdown function which can be used when this module is statically linked into the application. More...
G_MODULE_EXPORT void	qof_backend_module_init (void)
	This is the standardized initialization function of a qof_backend GModule, but compiling this can be disabled by defining GNC_NO_LOADABLE_MODULES. More...
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

gnc_module_finalize_backend_dbi()

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 1196 of file gnc-backend-dbi.cpp.

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

gnc_module_init_backend_dbi()

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 1071 of file gnc-backend-dbi.cpp.

{
    const char* 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 == nullptr)
    {
        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)
    {
#if HAVE_LIBDBI_R
        if (dbi_instance)
        {
            dbi_shutdown_r (dbi_instance);
            dbi_instance = nullptr;
        }
#endif
        gchar *libdir = gnc_path_get_libdir ();
        gchar *dir = g_build_filename (libdir, "dbd", nullptr);
        g_free (libdir);
#if HAVE_LIBDBI_R
        num_drivers = dbi_initialize_r (dir, &dbi_instance);
#else
        num_drivers = dbi_initialize (dir);
#endif
        g_free (dir);
    }
    if (num_drivers <= 0)
    {
        PWARN ("No DBD drivers found\n");
    }
    else
    {
        dbi_driver driver = nullptr;
        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 != nullptr)
            {
                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 != nullptr);
    }

    if (have_sqlite3_driver)
    {
        const char* name = "GnuCash Libdbi (SQLITE3) Backend";
        auto prov = QofBackendProvider_ptr(new QofDbiBackendProvider<DbType::DBI_SQLITE>{name, FILE_URI_TYPE});
        qof_backend_register_provider(std::move(prov));
        prov = QofBackendProvider_ptr(new QofDbiBackendProvider<DbType::DBI_SQLITE>{name, SQLITE3_URI_TYPE});
        qof_backend_register_provider(std::move(prov));
    }

    if (have_mysql_driver)
    {
        const char *name = "GnuCash Libdbi (MYSQL) Backend";
        auto prov = QofBackendProvider_ptr(new QofDbiBackendProvider<DbType::DBI_MYSQL>{name, "mysql"});
        qof_backend_register_provider(std::move(prov));
    }

    if (have_pgsql_driver)
    {
        const char* name = "GnuCash Libdbi (POSTGRESQL) Backend";
        auto prov = QofBackendProvider_ptr(new QofDbiBackendProvider<DbType::DBI_PGSQL>{name, "postgres"});
        qof_backend_register_provider(std::move(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 ); */
}

qof_backend_module_init()

G_MODULE_EXPORT void qof_backend_module_init

(

void

)

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

Definition at line 1183 of file gnc-backend-dbi.cpp.

{
    gnc_module_init_backend_dbi ();
}