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Firebird connection driver updated

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This commit is contained in:
zYne 2006-11-01 09:51:12 +00:00
parent b219cf4c95
commit 3248d5e410
1 changed files with 113 additions and 4 deletions
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117
lib/Doctrine/Connection/Firebird.php
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@ -24,6 +24,7 @@ Doctrine::autoload('Doctrine_Connection');
*
* @package Doctrine ORM
* @url www.phpdoctrine.com
* @author Lorenzo Alberton <l.alberton@quipo.it> (PEAR MDB2 library)
* @license LGPL
*/
class Doctrine_Connection_Firebird extends Doctrine_Connection {
@ -31,17 +32,125 @@ class Doctrine_Connection_Firebird extends Doctrine_Connection {
* @var string $driverName the name of this connection driver
*/
protected $driverName = 'Firebird';
/**
* the constructor
*
* @param Doctrine_Manager $manager
* @param PDO $pdo database handle
*/
public function __construct(Doctrine_Manager $manager, PDO $pdo) {
$this->supported = array(
'sequences' => true,
'indexes' => true,
'affected_rows' => true,
'summary_functions' => true,
'order_by_text' => true,
'transactions' => true,
'savepoints' => true,
'current_id' => true,
'limit_queries' => 'emulated',
'LOBs' => true,
'replace' => 'emulated',
'sub_selects' => true,
'auto_increment' => true,
'primary_key' => true,
'result_introspection' => true,
'prepared_statements' => true,
'identifier_quoting' => false,
'pattern_escaping' => true
);
// initialize all driver options
$this->options['DBA_username'] = false;
$this->options['DBA_password'] = false;
$this->options['database_path'] = '';
$this->options['database_extension'] = '.gdb';
$this->options['server_version'] = '';
parent::__construct($manager, $pdo);
}
/**
* Set the transacton isolation level.
*
* @param string standard isolation level (SQL-92)
* READ UNCOMMITTED (allows dirty reads)
* READ COMMITTED (prevents dirty reads)
* REPEATABLE READ (prevents nonrepeatable reads)
* SERIALIZABLE (prevents phantom reads)
*
* @param array some transaction options:
* 'wait' => 'WAIT' | 'NO WAIT'
* 'rw' => 'READ WRITE' | 'READ ONLY'
* @return void
*/
function setTransactionIsolation($isolation, $options = array()) {
switch ($isolation) {
case 'READ UNCOMMITTED':
$ibase_isolation = 'READ COMMITTED RECORD_VERSION';
break;
case 'READ COMMITTED':
$ibase_isolation = 'READ COMMITTED NO RECORD_VERSION';
break;
case 'REPEATABLE READ':
$ibase_isolation = 'SNAPSHOT';
break;
case 'SERIALIZABLE':
$ibase_isolation = 'SNAPSHOT TABLE STABILITY';
break;
default:
throw new Doctrine_Connection_Firebird_Exception('isolation level is not supported: ' . $isolation);
}
if( ! empty($options['wait'])) {
switch ($options['wait']) {
case 'WAIT':
case 'NO WAIT':
$wait = $options['wait'];
break;
default:
throw new Doctrine_Connection_Firebird_Exception('wait option is not supported: ' . $options['wait']);
}
}
if( ! empty($options['rw'])) {
switch ($options['rw']) {
case 'READ ONLY':
case 'READ WRITE':
$rw = $options['wait'];
break;
default:
throw new Doctrine_Connection_Firebird_Exception('wait option is not supported: ' . $options['rw']);
}
}
$query = 'SET TRANSACTION ' . $rw . ' ' . $wait .' ISOLATION LEVEL ' . $ibase_isolation;
$this->dbh->query($query);
}
/**
* Set the charset on the current connection
*
* @param string charset
* @param resource connection handle
*
* @return void
*/
public function setCharset($charset) {
$query = 'SET NAMES '.$this->dbh->quote($charset);
$this->dbh->query($query);
}
/**
* Adds an driver-specific LIMIT clause to the query
*
* @param string $query
* @param mixed $limit
* @param mixed $offset
* @param string $query query to modify
* @param integer $limit limit the number of rows
* @param integer $offset start reading from given offset
* @return string modified query
*/
public function modifyLimitQuery($query, $limit, $offset) {
return preg_replace('/^([\s(])*SELECT(?!\s*FIRST\s*\d+)/i',
if($limit > 0) {
$query = preg_replace('/^([\s(])*SELECT(?!\s*FIRST\s*\d+)/i',
"SELECT FIRST $limit SKIP $offset", $query);
}
return $query;
}
/**
* returns the next value in the given sequence