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<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Bart Visscher <bartv@thisnet.nl>
* @author Joas Schilling <coding@schilljs.com>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Robin Appelman <robin@icewind.nl>
* @author Robin McCorkell <robin@mccorkell.me.uk>
* @author Roeland Jago Douma <roeland@famdouma.nl>
* @author Thomas Müller <thomas.mueller@tmit.eu>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
/**
* Public interface of ownCloud for apps to use.
* DBConnection interface
*
*/
// 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;
use Doctrine\DBAL\Schema\Schema;
use OCP\DB\QueryBuilder\IQueryBuilder;
/**
* Interface IDBConnection
*
* @package OCP
* @since 6.0.0
*/
interface IDBConnection {
const ADD_MISSING_INDEXES_EVENT = self::class . '::ADD_MISSING_INDEXES';
/**
* Gets the QueryBuilder for the connection.
*
* @return \OCP\DB\QueryBuilder\IQueryBuilder
* @since 8.2.0
*/
public function getQueryBuilder();
/**
* Used to abstract the ownCloud database access away
* @param string $sql the sql query with ? placeholder for params
* @param int $limit the maximum number of rows
* @param int $offset from which row we want to start
* @return \Doctrine\DBAL\Driver\Statement The prepared statement.
* @since 6.0.0
*/
public function prepare($sql, $limit=null, $offset=null);
/**
* Executes an, optionally parameterized, SQL query.
*
* If the query is parameterized, a prepared statement is used.
* If an SQLLogger is configured, the execution is logged.
*
* @param string $query The SQL query to execute.
* @param string[] $params The parameters to bind to the query, if any.
* @param array $types The types the previous parameters are in.
* @return \Doctrine\DBAL\Driver\Statement The executed statement.
* @since 8.0.0
*/
public function executeQuery($query, array $params = array(), $types = array());
/**
* Executes an SQL INSERT/UPDATE/DELETE query with the given parameters
* and returns the number of affected rows.
*
* This method supports PDO binding types as well as DBAL mapping types.
*
* @param string $query The SQL query.
* @param array $params The query parameters.
* @param array $types The parameter types.
* @return integer The number of affected rows.
* @since 8.0.0
*/
public function executeUpdate($query, array $params = array(), array $types = array());
/**
* Used to get the id of the just inserted element
* @param string $table the name of the table where we inserted the item
* @return int the id of the inserted element
* @since 6.0.0
*/
public function lastInsertId($table = null);
/**
* Insert a row if the matching row does not exists.
*
* @param string $table The table name (will replace *PREFIX* with the actual prefix)
* @param array $input data that should be inserted into the table (column name => value)
* @param array|null $compare List of values that should be checked for "if not exists"
* If this is null or an empty array, all keys of $input will be compared
* Please note: text fields (clob) must not be used in the compare array
* @return int number of inserted rows
* @throws \Doctrine\DBAL\DBALException
* @since 6.0.0 - parameter $compare was added in 8.1.0, return type changed from boolean in 8.1.0
*/
public function insertIfNotExist($table, $input, array $compare = null);
/**
* Insert or update a row value
*
* @param string $table
* @param array $keys (column name => value)
* @param array $values (column name => value)
* @param array $updatePreconditionValues ensure values match preconditions (column name => value)
* @return int number of new rows
* @throws \Doctrine\DBAL\DBALException
* @throws PreconditionNotMetException
* @since 9.0.0
*/
public function setValues($table, array $keys, array $values, array $updatePreconditionValues = []);
/**
* Create an exclusive read+write lock on a table
*
* Important Note: Due to the nature how locks work on different DBs, it is
* only possible to lock one table at a time. You should also NOT start a
* transaction while holding a lock.
*
* @param string $tableName
* @since 9.1.0
*/
public function lockTable($tableName);
/**
* Release a previous acquired lock again
*
* @since 9.1.0
*/
public function unlockTable();
/**
* Start a transaction
* @since 6.0.0
*/
public function beginTransaction();
/**
* Check if a transaction is active
*
* @return bool
* @since 8.2.0
*/
public function inTransaction();
/**
* Commit the database changes done during a transaction that is in progress
* @since 6.0.0
*/
public function commit();
/**
* Rollback the database changes done during a transaction that is in progress
* @since 6.0.0
*/
public function rollBack();
/**
* Gets the error code and message as a string for logging
* @return string
* @since 6.0.0
*/
public function getError();
/**
* Fetch the SQLSTATE associated with the last database operation.
*
* @return integer The last error code.
* @since 8.0.0
*/
public function errorCode();
/**
* Fetch extended error information associated with the last database operation.
*
* @return array The last error information.
* @since 8.0.0
*/
public function errorInfo();
/**
* Establishes the connection with the database.
*
* @return bool
* @since 8.0.0
*/
public function connect();
/**
* Close the database connection
* @since 8.0.0
*/
public function close();
/**
* Quotes a given input parameter.
*
* @param mixed $input Parameter to be quoted.
* @param int $type Type of the parameter.
* @return string The quoted parameter.
* @since 8.0.0
*/
public function quote($input, $type = IQueryBuilder::PARAM_STR);
/**
* Gets the DatabasePlatform instance that provides all the metadata about
* the platform this driver connects to.
*
* @return \Doctrine\DBAL\Platforms\AbstractPlatform The database platform.
* @since 8.0.0
*/
public function getDatabasePlatform();
/**
* Drop a table from the database if it exists
*
* @param string $table table name without the prefix
* @since 8.0.0
*/
public function dropTable($table);
/**
* Check if a table exists
*
* @param string $table table name without the prefix
* @return bool
* @since 8.0.0
*/
public function tableExists($table);
/**
* Escape a parameter to be used in a LIKE query
*
* @param string $param
* @return string
* @since 9.0.0
*/
public function escapeLikeParameter($param);
/**
* Check whether or not the current database support 4byte wide unicode
*
* @return bool
* @since 11.0.0
*/
public function supports4ByteText();
/**
* Create the schema of the connected database
*
* @return Schema
* @since 13.0.0
*/
public function createSchema();
/**
* Migrate the database to the given schema
*
* @param Schema $toSchema
* @since 13.0.0
*/
public function migrateToSchema(Schema $toSchema);
}