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/* Tidbit
* Copyright (C) 2010 Charlie Brej tidbit@brej.org
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3.0 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <glib.h>
#include "tidbit.h"
#include "tidbit-database.h"
#include "tidbit-database-fork.h"
#define GET_FORK_BACKEND(_database) ((PtrTidbitDatabaseFork)(_database->backend))
static void tidbit_database_fork_free (PtrTidbitDatabase database);
static unsigned int tidbit_database_fork_insert (PtrTidbitDatabase database, PtrTidbitRecord record);
static PtrTidbitRecord tidbit_database_fork_fetch (PtrTidbitDatabase database, PtrTidbitGuid guid);
static PtrTidbitGuidGroup tidbit_database_fork_query (PtrTidbitDatabase database, PtrTidbitQuery query);
static TidbitDatabaseFunctions backend_functions = {
&tidbit_database_fork_free,
&tidbit_database_fork_insert,
&tidbit_database_fork_fetch,
&tidbit_database_fork_query,
};
PtrTidbitDatabase tidbit_database_fork_new (PtrTidbitDatabase sub_a, PtrTidbitDatabase sub_b, int caching)
{
PtrTidbitDatabaseFork backend = g_new(TidbitDatabaseFork, 1);
backend->sub_a = sub_a;
tidbit_database_ref (backend->sub_a);
backend->sub_b = sub_b;
tidbit_database_ref (backend->sub_b);
backend->caching = caching;
PtrTidbitDatabase database = tidbit_database_new(backend, &backend_functions);
return database;
}
static void tidbit_database_fork_free (PtrTidbitDatabase database)
{
PtrTidbitDatabaseFork backend = GET_FORK_BACKEND(database);
tidbit_database_unref (backend->sub_a);
tidbit_database_unref (backend->sub_b);
g_free(backend);
}
static unsigned int tidbit_database_fork_insert (PtrTidbitDatabase database, PtrTidbitRecord record)
{
PtrTidbitDatabaseFork backend = GET_FORK_BACKEND(database);
tidbit_database_insert (backend->sub_a, record);
return tidbit_database_insert (backend->sub_b, record); //FIXME combine success
}
static PtrTidbitRecord tidbit_database_fork_fetch (PtrTidbitDatabase database, PtrTidbitGuid guid)
{
PtrTidbitDatabaseFork backend = GET_FORK_BACKEND(database);
PtrTidbitRecord record = tidbit_database_fetch (backend->sub_a, guid);
if (!record) {
record = tidbit_database_fetch (backend->sub_b, guid);
if (record && backend->caching){
tidbit_database_insert (database, record);
}
}
return record;
}
static PtrTidbitGuidGroup tidbit_database_fork_query (PtrTidbitDatabase database, PtrTidbitQuery query)
{
PtrTidbitDatabaseFork backend = GET_FORK_BACKEND(database);
PtrTidbitGuidGroup guid_group_a = tidbit_database_query (backend->sub_a, query);
PtrTidbitGuidGroup guid_group_b = tidbit_database_query (backend->sub_b, query);
PtrTidbitGuidGroup guid_group = tidbit_guid_group_merge (guid_group_a, guid_group_b);
tidbit_guid_group_unref (guid_group_a);
tidbit_guid_group_unref (guid_group_b);
return guid_group;
}
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