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authorsvncommit <devs@roundcube.net>2005-10-20 15:51:59 +0000
committersvncommit <devs@roundcube.net>2005-10-20 15:51:59 +0000
commitf45ec7e91895c9de8c9c244a174f34220de0d9ab (patch)
treee16cb029f0b5e8a11bd4c23f41d3355ccfa7ffd6 /program/include/rcube_mdb2.inc
parent4301b06027a81941ef418418775797b2b926a8b6 (diff)
MDB2 integration
Diffstat (limited to 'program/include/rcube_mdb2.inc')
-rwxr-xr-xprogram/include/rcube_mdb2.inc250
1 files changed, 250 insertions, 0 deletions
diff --git a/program/include/rcube_mdb2.inc b/program/include/rcube_mdb2.inc
new file mode 100755
index 000000000..7473fa348
--- /dev/null
+++ b/program/include/rcube_mdb2.inc
@@ -0,0 +1,250 @@
+<?php
+
+/*
+ +-----------------------------------------------------------------------+
+ | program/include/rcube_db.inc |
+ | |
+ | This file is part of the RoundCube Webmail client |
+ | Copyright (C) 2005, RoundCube Dev. - Switzerland |
+ | Licensed under the GNU GPL |
+ | |
+ | PURPOSE: |
+ | PEAR:DB wrapper class that implements PEAR DB functions |
+ | See http://pear.php.net/package/DB |
+ | |
+ +-----------------------------------------------------------------------+
+ | Author: David Saez Padros <david@ols.es> |
+ +-----------------------------------------------------------------------+
+
+ $Id$
+
+*/
+
+require_once('MDB2.php');
+
+class rcube_db
+{
+ var $db_dsnw; // DSN for write operations
+ var $db_dsnr; // DSN for read operations
+ var $db_connected=false; // Already connected ?
+ var $db_mode=''; // Connection mode
+ var $db_handle=0; // Connection handle
+
+ var $a_query_results = array('dummy');
+ var $last_res_id = 0;
+
+ // PHP 5 constructor
+ function __construct($db_dsnw,$db_dsnr='')
+ {
+ if ($db_dsnr=='') $db_dsnr=$db_dsnw;
+
+ $this->db_dsnw = $db_dsnw;
+ $this->db_dsnr = $db_dsnr;
+
+ $dsn_array = MDB2::parseDSN($db_dsnw);
+ $this->db_provider = $dsn_array['phptype'];
+ }
+
+ // PHP 4 compatibility
+ function rcube_db($db_dsnw,$db_dsnr='')
+ {
+ $this->__construct($db_dsnw,$db_dsnr);
+ }
+
+ // Connect to specific database
+ function dsn_connect($dsn)
+ {
+ // Use persistent connections if available
+ $dbh = MDB2::factory($dsn, array('persistent' => $true));
+
+ if (PEAR::isError($dbh))
+ raise_error(array('code' => 500,
+ 'type' => 'db',
+ 'line' => __LINE__,
+ 'file' => __FILE__,
+ 'message' => $dbh->getMessage()), TRUE, FALSE);
+
+ else if ($this->db_provider=='sqlite')
+ {
+ $dsn_array = MDB2::parseDSN($dsn);
+ if (!filesize($dsn_array['database']) && !empty($this->sqlite_initials))
+ $this->_sqlite_create_database($dbh, $this->sqlite_initials);
+ }
+
+ return $dbh;
+ }
+
+ // Connect to appropiate databse
+ function db_connect ($mode)
+ {
+ $this->db_mode = $mode;
+
+ // Already connected
+ if ($this->db_connected)
+ {
+ // no replication, current connection is ok
+ if ($this->db_dsnw==$this->db_dsnr) return;
+
+ // connected to master, current connection is ok
+ if ($this->db_mode=='w') return;
+
+ // Same mode, current connection is ok
+ if ($this->db_mode==$mode) return;
+ }
+
+ if ($mode=='r')
+ $dsn=$this->db_dsnr;
+ else
+ $dsn=$this->db_dsnw;
+
+ $this->db_handle = $this->dsn_connect($dsn);
+ $this->db_connected = true;
+ }
+
+ // Query database (read operations)
+
+ function query($query)
+ {
+ // Read or write ?
+ if (strtolower(trim(substr($query,0,6)))=='select')
+ $mode='r';
+ else
+ $mode='w';
+
+ $this->db_connect($mode);
+
+ if ($this->db_provider == 'sqlite')
+ $query = $this->_sqlite_prepare_query($query);
+
+ $result = $this->db_handle->query($query);
+
+ if (PEAR::isError($result))
+ raise_error(array('code' => 500,
+ 'type' => 'db',
+ 'line' => __LINE__,
+ 'file' => __FILE__,
+ 'message' => $result->getMessage()), TRUE, FALSE);
+
+ return $this->_add_result($result, $query);
+ }
+
+ function db_execute ($query)
+ {
+ $this->db_connect('w');
+
+ if ($this->db_provider == 'sqlite')
+ $query = $this->_sqlite_prepare_query($query);
+
+ $result = $this->db_handle->query($query);
+
+ }
+
+ function num_rows($res_id=NULL)
+ {
+ if (!$this->db_handle)
+ return FALSE;
+
+ $result = $this->_get_result($res_id);
+
+ if ($result)
+ return $result->numRows();
+ else
+ return FALSE;
+ }
+
+ function affected_rows($res_id=NULL)
+ {
+ if (!$this->db_handle)
+ return FALSE;
+
+ return $this->db_handle->affectedRows();
+ }
+
+ function insert_id($sequence = '')
+ {
+ if (!$this->db_handle || $this->db_mode=='r')
+ return FALSE;
+
+ return $this->db_handle->lastInsertID();
+ }
+
+
+ function fetch_assoc($res_id=NULL)
+ {
+ $result = $this->_get_result($res_id);
+
+ if (PEAR::isError($result))
+ {
+ raise_error( array('code' => 500, 'type' => 'db', 'line' => __LINE__, 'file' => __FILE__,
+ 'message' => $this->db_link->getMessage()), TRUE, FALSE);
+ return FALSE;
+ }
+
+ return $result->fetchRow(MDB2_FETCHMODE_ASSOC);
+ }
+
+ function _add_result($res, $query)
+ {
+ // sql error occured
+ if (PEAR::isError($res))
+ {
+ raise_error(array('code' => 500, 'type' => 'db', 'line' => __LINE__, 'file' => __FILE__, 'message' => $res->getMessage() . " Query: " . substr(preg_replace('/[\r\n]+\s*/', ' ', $query), 0, 1024)), TRUE, FALSE);
+ return FALSE;
+ }
+ else
+ {
+ $res_id = sizeof($this->a_query_results);
+ $this->a_query_results[$res_id] = $res;
+ $this->last_res_id = $res_id;
+ return $res_id;
+ }
+ }
+
+
+ function _get_result($res_id)
+ {
+ if ($res_id==NULL)
+ $res_id = $this->last_res_id;
+
+ if ($res_id && isset($this->a_query_results[$res_id]))
+ return $this->a_query_results[$res_id];
+ else
+ return FALSE;
+ }
+
+
+ // create a sqlite database from a file
+ function _sqlite_create_database($dbh, $fileName)
+ {
+ if (empty($fileName) || !is_string($fileName))
+ return ;
+
+ $data = '';
+ if ($fd = fopen($fileName, 'r'))
+ {
+ $data = fread($fd, filesize($fileName));
+ fclose($fd);
+ }
+
+ if (strlen($data))
+ sqlite_exec($dbh->connection, $data);
+ }
+
+ // transform a query so that it is sqlite2 compliant
+ function _sqlite_prepare_query($query)
+ {
+ if (!is_string($query))
+ return ($query);
+
+ $search = array('/NOW\(\)/',
+ '/`/');
+ $replace = array("datetime('now')",
+ '"');
+ $query = preg_replace($search, $replace, $query);
+
+ return ($query);
+ }
+
+}
+
+?> \ No newline at end of file