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/*
* Copyright (C) 2008 Martin Willi
* Hochschule fuer Technik Rapperswil
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program 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 General Public License
* for more details.
*/
#include "database_factory.h"
#include <collections/linked_list.h>
#include <threading/mutex.h>
typedef struct private_database_factory_t private_database_factory_t;
/**
* private data of database_factory
*/
struct private_database_factory_t {
/**
* public functions
*/
database_factory_t public;
/**
* list of registered database_t implementations
*/
linked_list_t *databases;
/**
* mutex to lock access to databases
*/
mutex_t *mutex;
};
METHOD(database_factory_t, create, database_t*,
private_database_factory_t *this, char *uri)
{
enumerator_t *enumerator;
database_t *database = NULL;
database_constructor_t create;
this->mutex->lock(this->mutex);
enumerator = this->databases->create_enumerator(this->databases);
while (enumerator->enumerate(enumerator, &create))
{
database = create(uri);
if (database)
{
break;
}
}
enumerator->destroy(enumerator);
this->mutex->unlock(this->mutex);
return database;
}
METHOD(database_factory_t, add_database, void,
private_database_factory_t *this, database_constructor_t create)
{
this->mutex->lock(this->mutex);
this->databases->insert_last(this->databases, create);
this->mutex->unlock(this->mutex);
}
METHOD(database_factory_t, remove_database, void,
private_database_factory_t *this, database_constructor_t create)
{
this->mutex->lock(this->mutex);
this->databases->remove(this->databases, create, NULL);
this->mutex->unlock(this->mutex);
}
METHOD(database_factory_t, destroy, void,
private_database_factory_t *this)
{
this->databases->destroy(this->databases);
this->mutex->destroy(this->mutex);
free(this);
}
/*
* see header file
*/
database_factory_t *database_factory_create()
{
private_database_factory_t *this;
INIT(this,
.public = {
.create = _create,
.add_database = _add_database,
.remove_database = _remove_database,
.destroy = _destroy,
},
.databases = linked_list_create(),
.mutex = mutex_create(MUTEX_TYPE_DEFAULT),
);
return &this->public;
}
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