| program/include/rcube_mdb2.php |
| |
| This file is part of the Roundcube Webmail client |
- | Copyright (C) 2005-2009, Roundcube Dev. - Switzerland |
+ | Copyright (C) 2005-2009, The Roundcube Dev Team |
| Licensed under the GNU GPL |
| |
| PURPOSE: |
| Author: Lukas Kahwe Smith <smith@pooteeweet.org> |
+-----------------------------------------------------------------------+
- $Id: rcube_mdb2.php 4643 2011-04-11 12:24:00Z alec $
+ $Id: rcube_mdb2.php 4810 2011-05-27 11:02:51Z alec $
*/
* @author David Saez Padros <david@ols.es>
* @author Thomas Bruederli <roundcube@gmail.com>
* @author Lukas Kahwe Smith <smith@pooteeweet.org>
- * @version 1.17
+ * @version 1.18
* @link http://pear.php.net/package/MDB2
*/
class rcube_mdb2
var $db_error_msg = '';
private $debug_mode = false;
+ private $write_failure = false;
private $a_query_results = array('dummy');
private $last_res_id = 0;
private $tables;
'persistent' => $this->db_pconn,
'emulate_prepared' => $this->debug_mode,
'debug' => $this->debug_mode,
- 'debug_handler' => 'mdb2_debug_handler',
+ 'debug_handler' => array($this, 'debug_handler'),
'portability' => MDB2_PORTABILITY_ALL ^ MDB2_PORTABILITY_EMPTY_TO_NULL);
if ($this->db_provider == 'pgsql') {
// Already connected
if ($this->db_connected) {
// connected to read-write db, current connection is ok
- if ($this->db_mode == 'w')
+ if ($this->db_mode == 'w' && !$this->write_failure)
return;
// no replication, current connection is ok for read and write
$this->db_handle = $this->dsn_connect($dsn);
$this->db_connected = !PEAR::isError($this->db_handle);
- $this->db_mode = $mode;
+
+ if ($this->db_connected)
+ $this->db_mode = $mode;
}
}
+ /**
+ * Is database replication configured?
+ * This returns true if dsnw != dsnr
+ */
+ function is_replicated()
+ {
+ return !empty($this->db_dsnr) && $this->db_dsnw != $this->db_dsnr;
+ }
+
+
/**
* Execute a SQL query
*
// Read or write ?
$mode = (strtolower(substr(trim($query),0,6)) == 'select') ? 'r' : 'w';
+ // don't event attempt to connect if previous write-operation failed
+ if ($this->write_failure && $mode == 'w')
+ return false;
+
$this->db_connect($mode);
// check connection before proceeding
raise_error(array('code' => 500, 'type' => 'db',
'line' => __LINE__, 'file' => __FILE__,
- 'message' => $this->db_error_msg), true, true);
+ 'message' => $this->db_error_msg), true, false);
+
+ $result = false;
}
else {
$result = $q->execute($params);
}
}
+ // remember that write-operation failed
+ if ($mode == 'w' && ($result === false || PEAR::isError($result)))
+ $this->write_failure = true;
+
// add result, even if it's an error
return $this->_add_result($result);
}
*/
function num_rows($res_id=null)
{
- if (!$this->db_handle)
+ if (!$this->db_connected)
return false;
if ($result = $this->_get_result($res_id))
*/
function affected_rows($res_id = null)
{
- if (!$this->db_handle)
+ if (!$this->db_connected)
return false;
- return (int) $this->_get_result($res_id);
+ return $this->_get_result($res_id);
}
*/
function insert_id($table = '')
{
- if (!$this->db_handle || $this->db_mode == 'r')
+ if (!$this->db_connected || $this->db_mode == 'r')
return false;
if ($table) {
}
+ /**
+ * Wrapper for SHOW COLUMNS command
+ *
+ * @param string Table name
+ * @return array List of table cols
+ */
+ function list_cols($table)
+ {
+ $this->db_handle->loadModule('Manager');
+ if (!PEAR::isError($result = $this->db_handle->listTableFields($table))) {
+ return $result;
+ }
+
+ return null;
+ }
+
+
/**
* Formats input so it can be safely used in a query
*
if (!$this->db_handle)
$this->db_connect('r');
- return $this->db_handle->quote($input, $type);
+ return $this->db_connected ? $this->db_handle->quote($input, $type) : addslashes($input);
}
if (!$this->db_handle)
$this->db_connect('r');
- return $this->db_handle->quoteIdentifier($str);
+ return $this->db_connected ? $this->db_handle->quoteIdentifier($str) : $str;
}
/**
* Return SQL statement to convert a field value into a unix timestamp
*
+ * This method is deprecated and should not be used anymore due to limitations
+ * of timestamp functions in Mysql (year 2038 problem)
+ *
* @param string $field Field name
* @return string SQL statement to use in query
- * @access public
+ * @deprecated
*/
function unixtimestamp($field)
{
}
}
+ /**
+ * Abstract SQL statement for value concatenation
+ *
+ * @return string SQL statement to be used in query
+ * @access public
+ */
+ function concat(/* col1, col2, ... */)
+ {
+ $func = '';
+ $args = func_get_args();
+
+ switch($this->db_provider) {
+ case 'mysql':
+ case 'mysqli':
+ $func = 'CONCAT';
+ $delim = ', ';
+ break;
+ case 'mssql':
+ case 'sqlsrv':
+ $delim = ' + ';
+ break;
+ default:
+ $delim = ' || ';
+ }
+
+ return $func . '(' . join($delim, $args) . ')';
+ }
+
/**
* Encodes non-UTF-8 characters in string/array/object (recursive)
*/
private function _sqlite_prepare()
{
- include_once('include/rcube_sqlite.inc');
+ include_once(INSTALL_PATH . 'program/include/rcube_sqlite.inc');
// we emulate via callback some missing MySQL function
sqlite_create_function($this->db_handle->connection,
'md5', 'rcube_sqlite_md5');
}
-} // end class rcube_db
-
-/* this is our own debug handler for the MDB2 connection */
-function mdb2_debug_handler(&$db, $scope, $message, $context = array())
-{
- if ($scope != 'prepare') {
- $debug_output = sprintf('%s(%d): %s;',
- $scope, $db->db_index, rtrim($message, ';'));
- write_log('sql', $debug_output);
+ /**
+ * Debug handler for the MDB2
+ */
+ function debug_handler(&$db, $scope, $message, $context = array())
+ {
+ if ($scope != 'prepare') {
+ $debug_output = sprintf('%s(%d): %s;',
+ $scope, $db->db_index, rtrim($message, ';'));
+ write_log('sql', $debug_output);
+ }
}
-}
+} // end class rcube_db
projects / roundcube.git / blobdiff