127 lines
5.3 KiB
PHP
127 lines
5.3 KiB
PHP
<?php
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/*
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* $Id$
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information, see
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* <http://www.phpdoctrine.com>.
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*/
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Doctrine::autoload("Doctrine_Connection_Common");
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/**
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* Doctrine_Connection_Sqlite
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*
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* @package Doctrine
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* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
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* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
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* @author Lukas Smith <smith@pooteeweet.org> (PEAR MDB2 library)
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* @version $Revision$
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* @category Object Relational Mapping
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* @link www.phpdoctrine.com
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* @since 1.0
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*/
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class Doctrine_Connection_Sqlite extends Doctrine_Connection_Common {
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/**
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* @var string $driverName the name of this connection driver
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*/
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protected $driverName = 'Sqlite';
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/**
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* the constructor
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*
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* @param Doctrine_Manager $manager
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* @param PDO $pdo database handle
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*/
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public function __construct(Doctrine_Manager $manager, $adapter) {
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$this->supported = array(
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'sequences' => 'emulated',
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'indexes' => true,
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'affected_rows' => true,
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'summary_functions' => true,
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'order_by_text' => true,
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'current_id' => 'emulated',
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'limit_queries' => true,
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'LOBs' => true,
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'replace' => true,
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'transactions' => true,
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'savepoints' => false,
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'sub_selects' => true,
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'auto_increment' => true,
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'primary_key' => true,
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'result_introspection' => false, // not implemented
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'prepared_statements' => 'emulated',
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'identifier_quoting' => true,
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'pattern_escaping' => false,
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);
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$this->options['base_transaction_name'] = '___php_MDB2_sqlite_auto_commit_off';
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$this->options['fixed_float'] = 0;
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$this->options['database_path'] = '';
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$this->options['database_extension'] = '';
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$this->options['server_version'] = '';
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parent::__construct($manager, $adapter);
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}
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/**
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* initializes database functions missing in sqlite
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*/
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public function initFunctions() {
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$this->dbh->sqliteCreateFunction('md5', array('Doctrine_Expression_Sqlite', 'md5Impl'), 1);
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$this->dbh->sqliteCreateFunction('mod', array('Doctrine_Expression_Sqlite', 'modImpl'), 2);
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$this->dbh->sqliteCreateFunction('concat', array('Doctrine_Expression_Sqlite', 'concatImpl'));
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$this->dbh->sqliteCreateFunction('now', 'time', 0);
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}
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/**
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* Set the transacton isolation level.
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*
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* @param string standard isolation level
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* READ UNCOMMITTED (allows dirty reads)
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* READ COMMITTED (prevents dirty reads)
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* REPEATABLE READ (prevents nonrepeatable reads)
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* SERIALIZABLE (prevents phantom reads)
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* @return void
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*/
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public function setTransactionIsolation($isolation) {
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switch ($isolation) {
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case 'READ UNCOMMITTED':
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$isolation = 0;
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break;
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case 'READ COMMITTED':
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case 'REPEATABLE READ':
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case 'SERIALIZABLE':
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$isolation = 1;
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break;
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default:
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throw new Doctrine_Connection_Sqlite_Exception('Isolation level ' . $isolation . 'is not supported.');
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}
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$query = "PRAGMA read_uncommitted=$isolation";
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return $this->_doQuery($query, true);
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}
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/**
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* Returns the current id of a sequence
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*
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* @param string $seq_name name of the sequence
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* @return integer the current id in the given sequence
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*/
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public function currId($sequence) {
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$sequence = $this->quoteIdentifier($sequence, true);
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$seqColumn = $this->quoteIdentifier($this->options['seqcol_name'], true);
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$stmt = $this->dbh->query('SELECT MAX(' . $seqColumn . ') FROM ' . $sequence);
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$data = $stmt->fetch(PDO::FETCH_NUM);
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return $data[0];
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}
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}
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