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<?php
# Copyright (C) 2006-2011 Tobias Leupold <tobias.leupold@web.de>
#
# This file is part of the b8 package
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation in version 2.1 of the License.
#
# 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 Lesser General Public
# License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
/**
* The MySQL abstraction layer for communicating with the database.
* Copyright (C) 2009 Oliver Lillie (aka buggedcom)
* Copyright (C) 2010-2011 Tobias Leupold <tobias.leupold@web.de>
*
* @license LGPL
* @access public
* @package b8
* @author Oliver Lillie (aka buggedcom) (original PHP 5 port and optimizations)
* @author Tobias Leupold
*/
class b8_storage_frndc extends b8_storage_base
{
public $config = array(
'database' => 'b8_wordlist',
'table_name' => 'b8_wordlist',
'host' => 'localhost',
'user' => FALSE,
'pass' => FALSE,
'connection' => NULL
);
public $b8_config = array(
'degenerator' => NULL,
'today' => NULL
);
private $_connection = NULL;
private $_deletes = array();
private $_puts = array();
private $_updates = array();
private $uid = 0;
const DATABASE_CONNECTION_FAIL = 'DATABASE_CONNECTION_FAIL';
const DATABASE_CONNECTION_ERROR = 'DATABASE_CONNECTION_ERROR';
const DATABASE_CONNECTION_BAD_RESOURCE = 'DATABASE_CONNECTION_BAD_RESOURCE';
const DATABASE_SELECT_ERROR = 'DATABASE_SELECT_ERROR';
const DATABASE_TABLE_ACCESS_FAIL = 'DATABASE_TABLE_ACCESS_FAIL';
const DATABASE_WRONG_VERSION = 'DATABASE_WRONG_VERSION';
/**
* Constructs the database layer.
*
* @access public
* @param string $config
*/
function __construct($config, $degenerator, $today)
{
# Pass some variables of the main b8 config to this class
$this->b8_config['degenerator'] = $degenerator;
$this->b8_config['today'] = $today;
# Validate the config items
if(count($config) > 0) {
foreach ($config as $name => $value) {
switch($name) {
case 'table_name':
case 'host':
case 'user':
case 'pass':
case 'database':
$this->config[$name] = (string) $value;
break;
case 'connection':
if($value !== NULL) {
if(is_resource($value) === TRUE) {
$resource_type = get_resource_type($value);
$this->config['connection'] = $resource_type !== 'mysql link' && $resource_type !== 'mysql link persistent' ? FALSE : $value;
}
else
$this->config['connection'] = FALSE;
}
break;
}
}
}
}
/**
* Closes the database connection.
*
* @access public
* @return void
*/
function __destruct()
{
if($this->_connection === NULL)
return;
# Commit any changes before closing
$this->_commit();
# Just close the connection if no link-resource was passed and b8 created it's own connection
if($this->config['connection'] === NULL)
mysql_close($this->_connection);
$this->connected = FALSE;
}
/**
* Connect to the database and do some checks.
*
* @access public
* @return mixed Returns TRUE on a successful database connection, otherwise returns a constant from b8.
*/
public function connect()
{
$this->connected = TRUE;
return TRUE;
}
/**
* Does the actual interaction with the database when fetching data.
*
* @access protected
* @param array $tokens
* @return mixed Returns an array of the returned data in the format array(token => data) or an empty array if there was no data.
*/
protected function _get_query($tokens, $uid)
{
# Construct the query ...
if(count($tokens) > 0) {
$where = array();
foreach ($tokens as $token) {
$token = dbesc($token);
array_push($where, $token);
}
$where = 'term IN ("' . implode('", "', $where) . '")';
}
else {
$token = dbesc($token);
$where = 'term = "' . $token . '"';
}
# ... and fetch the data
$result = q('
SELECT * FROM spam WHERE ' . $where . ' AND uid = ' . $uid );
$returned_tokens = array();
if(count($result)) {
foreach($result as $rr)
$returned_tokens[] = $rr['term'];
}
$to_create = array();
if(count($tokens) > 0) {
foreach($tokens as $token)
if(! in_array($token,$returned_tokens))
$to_create[] = str_tolower($token);
}
if(count($to_create)) {
$sql = '';
foreach($to_create as $term) {
if(strlen($sql))
$sql .= ',';
$sql .= sprintf("(term,date,uid) values('%s','%s',%d)",
dbesc(str_tolower($term))
dbesc(datetime_convert()),
intval($uid)
);
q("insert into spam " . $sql);
}
return $result;
}
/**
* Store a token to the database.
*
* @access protected
* @param string $token
* @param string $count
* @return void
*/
protected function _put($token, $count, $uid) {
$token = dbesc($token);
$count = dbesc($count);
$uid = dbesc($uid);
array_push($this->_puts, '("' . $token . '", "' . $count . '", "' . $uid .'")');
}
/**
* Update an existing token.
*
* @access protected
* @param string $token
* @param string $count
* @return void
*/
protected function _update($token, $count, $uid)
{
$token = dbesc($token);
$count = dbesc($count);
$uid = dbesc($uid);
array_push($this->_puts, '("' . $token . '", "' . $count . '", "' . $uid .'")');
}
/**
* Remove a token from the database.
*
* @access protected
* @param string $token
* @return void
*/
protected function _del($token, $uid)
{
$token = dbesc($token);
$uid = dbesc($uid);
$this->uid = $uid;
array_push($this->_deletes, $token);
}
/**
* Commits any modification queries.
*
* @access protected
* @return void
*/
protected function _commit($uid)
{
if(count($this->_deletes) > 0) {
$result = q('
DELETE FROM ' . $this->config['table_name'] . '
WHERE term IN ("' . implode('", "', $this->_deletes) . '") AND uid = ' . $this->uid);
$this->_deletes = array();
}
if(count($this->_puts) > 0) {
//fixme
$result = q('
INSERT INTO ' . $this->config['table_name'] . '(term, count, uid)
VALUES ' . implode(', ', $this->_puts));
$this->_puts = array();
}
if(count($this->_updates) > 0) {
// this still needs work
$result = q("select * from " . $this->config['table_name'] . ' where token = ');
$result = q('
INSERT INTO ' . $this->config['table_name'] . '(token, count, uid)
VALUES ' . implode(', ', $this->_updates) . ', ' . $uid . '
ON DUPLICATE KEY UPDATE ' . $this->config['table_name'] . '.count = VALUES(count);', $this->_connection);
$this->_updates = array();
}
}
}
?>
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