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sources/lib/public/db.php
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<?php
/**
* ownCloud
*
* @author Frank Karlitschek
* @copyright 2012 Frank Karlitschek frank@owncloud.org
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or 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 AFFERO GENERAL PUBLIC LICENSE for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
/**
* Public interface of ownCloud for apps to use.
* DB Class
*
*/
// use OCP namespace for all classes that are considered public.
// This means that they should be used by apps instead of the internal ownCloud classes
namespace OCP;
/**
* This class provides access to the internal database system. Use this class exlusively if you want to access databases
*/
class DB {
/**
* @brief Prepare a SQL query
* @param string $query Query string
* @return \MDB2_Statement_Common prepared SQL query
*
* SQL query via MDB2 prepare(), needs to be execute()'d!
*/
static public function prepare( $query, $limit=null, $offset=null ) {
return(\OC_DB::prepare($query, $limit, $offset));
}
/**
* @brief Insert a row if a matching row doesn't exists.
* @param $table string The table name (will replace *PREFIX*) to perform the replace on.
* @param $input array
*
* The input array if in the form:
*
* array ( 'id' => array ( 'value' => 6,
* 'key' => true
* ),
* 'name' => array ('value' => 'Stoyan'),
* 'family' => array ('value' => 'Stefanov'),
* 'birth_date' => array ('value' => '1975-06-20')
* );
* @return bool
*
*/
public static function insertIfNotExist($table, $input) {
return(\OC_DB::insertIfNotExist($table, $input));
}
/**
* @brief gets last value of autoincrement
* @param $table string The optional table name (will replace *PREFIX*) and add sequence suffix
* @return int
*
* MDB2 lastInsertID()
*
* Call this method right after the insert command or other functions may
* cause trouble!
*/
public static function insertid($table=null) {
return(\OC_DB::insertid($table));
}
/**
* @brief Start a transaction
*/
public static function beginTransaction() {
return(\OC_DB::beginTransaction());
}
/**
* @brief Commit the database changes done during a transaction that is in progress
*/
public static function commit() {
return(\OC_DB::commit());
}
/**
* @brief check if a result is an error, works with MDB2 and PDOException
* @param mixed $result
* @return bool
*/
public static function isError($result) {
return(\OC_DB::isError($result));
}
}
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