<?php
/**
*
* @package dbal
* @version $Id$
* @copyright (c) 2005 phpBB Group
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
*
*/
/*
pg_escape_string => http://ru.php.net/manual/en/pdo.quote.php
è pg_result_seek => âñåãäà TRUE
@sql_rowset
*/
/**
* @ignore
*/
if (!defined('IN_PHPBB'))
{
exit;
}
include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
/**
* PostgreSQL Database Abstraction Layer
* Minimum Requirement is Version 7.3+
* @package dbal
*/
class dbal_postgres extends dbal
{
var $last_query_text = '';
/**
* Connect to server
*/
function sql_connect($sqlserver, $sqluser, $sqlpassword, $database, $port = false, $persistency = false, $new_link = false)
{
$connect_string = '';
if ($sqluser)
{
$connect_string .= "user=$sqluser ";
}
if ($sqlpassword)
{
$connect_string .= "password=$sqlpassword ";
}
if ($sqlserver)
{
// $sqlserver can carry a port separated by : for compatibility reasons
// If $sqlserver has more than one : it's probably an IPv6 address.
// In this case we only allow passing a port via the $port variable.
if (substr_count($sqlserver, ':') === 1)
{
list($sqlserver, $port) = explode(':', $sqlserver);
}
if ($sqlserver !== 'localhost')
{
$connect_string .= "host=$sqlserver ";
}
if ($port)
{
$connect_string .= "port=$port ";
}
}
$schema = '';
if ($database)
{
$this->dbname = $database;
if (strpos($database, '.') !== false)
{
list($database, $schema) = explode('.', $database);
}
$connect_string .= "dbname=$database";
}
$this->persistency = $persistency;
if ($this->persistency)
{
//$this->db_connect_id = (!$new_link) ? @pg_pconnect($connect_string) : @pg_pconnect($connect_string, PGSQL_CONNECT_FORCE_NEW);
$this->db_connect_id = (!$new_link) ? @new PDO("pgsql:host=$sqlserver;dbname=$database", "$sqluser", "$sqlpassword") : @new PDO("pgsql:host=$sqlserver;dbname=$database", "$sqluser", "$sqlpassword");
}
else
{
//$this->db_connect_id = (!$new_link) ? @pg_connect($connect_string) : @pg_connect($connect_string, PGSQL_CONNECT_FORCE_NEW);
$this->db_connect_id = (!$new_link) ? @new PDO("pgsql:host=$sqlserver;dbname=$database", "$sqluser", "$sqlpassword") : @new PDO("pgsql:host=$sqlserver;dbname=$database", "$sqluser", "$sqlpassword");
}
if ($this->db_connect_id)
{
if (version_compare($this->sql_server_info(true), '9.1', '>='))
{
$this->multi_insert = true;
}
if ($schema !== '')
{
//@pg_query($this->db_connect_id, 'SET search_path TO ' . $schema);
@$this->db_connect_id->query('SET search_path TO ' . $schema);
}
return $this->db_connect_id;
}
return $this->sql_error('');
}
/**
* Version information about used database
* @param bool $raw if true, only return the fetched sql_server_version
* @param bool $use_cache If true, it is safe to retrieve the value from the cache
* @return string sql server version
*/
function sql_server_info($raw = false, $use_cache = true)
{
global $cache;
if (!$use_cache || empty($cache) || ($this->sql_server_version = $cache->get('pgsql_version')) === false)
{
/*
$query_id = @pg_query($this->db_connect_id, 'SELECT VERSION() AS version');
$row = @pg_fetch_assoc($query_id, null);
@pg_free_result($query_id);
*/
$query_id = @$this->db_connect_id->query('SELECT VERSION() AS version');
$row = @$query_id->fetch(PDO::FETCH_ASSOC);
$query_id = null;
$this->sql_server_version = (!empty($row['version'])) ? trim(substr($row['version'], 10)) : 0;
if (!empty($cache) && $use_cache)
{
$cache->put('pgsql_version', $this->sql_server_version);
}
}
return ($raw) ? $this->sql_server_version : 'PostgreSQL ' . $this->sql_server_version;
}
/**
* SQL Transaction
* @access private
*/
function _sql_transaction($status = 'begin')
{
switch ($status)
{
case 'begin':
//return @pg_query($this->db_connect_id, 'BEGIN');
return @$this->db_connect_id->beginTransaction();
break;
case 'commit':
//return @pg_query($this->db_connect_id, 'COMMIT');
return @$this->db_connect_id->commit();
break;
case 'rollback':
//return @pg_query($this->db_connect_id, 'ROLLBACK');
return @$this->db_connect_id->rollBack();
break;
}
return true;
}
/**
* Base query method
*
* @param string $query Contains the SQL query which shall be executed
* @param int $cache_ttl Either 0 to avoid caching or the time in seconds which the result shall be kept in cache
* @return mixed When casted to bool the returned value returns true on success and false on failure
*
* @access public
*/
function sql_query($query = '', $cache_ttl = 0)
{
if ($query != '')
{
global $cache;
// EXPLAIN only in extra debug mode
if (defined('DEBUG_EXTRA'))
{
$this->sql_report('start', $query);
}
$this->last_query_text = $query;
$this->query_result = ($cache_ttl && method_exists($cache, 'sql_load')) ? $cache->sql_load($query) : false;
$this->sql_add_num_queries($this->query_result);
if ($this->query_result === false)
{
// if (($this->query_result = @pg_query($this->db_connect_id, $query)) === false)
if (($this->query_result = @$this->db_connect_id->query($query)) === false)
{
$this->sql_error($query);
}
if (defined('DEBUG_EXTRA'))
{
$this->sql_report('stop', $query);
}
if ($cache_ttl && method_exists($cache, 'sql_save'))
{
$this->open_queries[(int) $this->query_result] = $this->query_result;
$cache->sql_save($query, $this->query_result, $cache_ttl);
}
else if (strpos($query, 'SELECT') === 0 && $this->query_result)
{
$this->open_queries[(int) $this->query_result] = $this->query_result;
}
}
else if (defined('DEBUG_EXTRA'))
{
$this->sql_report('fromcache', $query);
}
}
else
{
return false;
}
return $this->query_result;
}
/**
* Build db-specific query data
* @access private
*/
function _sql_custom_build($stage, $data)
{
return $data;
}
/**
* Build LIMIT query
*/
function _sql_query_limit($query, $total, $offset = 0, $cache_ttl = 0)
{
$this->query_result = false;
// if $total is set to 0 we do not want to limit the number of rows
if ($total == 0)
{
$total = 'ALL';
}
$query .= "\n LIMIT $total OFFSET $offset";
return $this->sql_query($query, $cache_ttl);
}
/**
* Return number of affected rows
*/
function sql_affectedrows()
{
//return ($this->query_result) ? @pg_affected_rows($this->query_result) : false;
return ($this->query_result) ? @$this->query_result->rowCount() : false;
}
/**
* Fetch current row
*/
function sql_fetchrow($query_id = false)
{
global $cache;
if ($query_id === false)
{
$query_id = $this->query_result;
}
if (@isset($cache->sql_rowset[$query_id]))
{
return $cache->sql_fetchrow($query_id);
}
//return ($query_id !== false) ? @pg_fetch_assoc($query_id, null) : false;
return ($query_id !== false) ? @$query_id->fetch(PDO::FETCH_ASSOC) : false;
}
/**
* Seek to given row number
* rownum is zero-based
*/
function sql_rowseek($rownum, &$query_id)
{
global $cache;
if ($query_id === false)
{
$query_id = $this->query_result;
}
if (@isset($cache->sql_rowset[$query_id]))
{
return $cache->sql_rowseek($rownum, $query_id);
}
//return ($query_id !== false) ? @pg_result_seek($query_id, $rownum) : false;
return true;
}
/**
* Get last inserted id after insert statement
*/
function sql_nextid()
{
$query_id = $this->query_result;
if ($query_id !== false && $this->last_query_text != '')
{
if (preg_match("/^INSERT[\t\n ]+INTO[\t\n ]+([a-z0-9\_\-]+)/is", $this->last_query_text, $tablename))
{
$query = "SELECT currval('" . $tablename[1] . "_seq') AS last_value";
//$temp_q_id = @pg_query($this->db_connect_id, $query);
$temp_q_id = @$this->db_connect_id->query($query);
if (!$temp_q_id)
{
return false;
}
//$temp_result = @pg_fetch_assoc($temp_q_id, NULL);
//@pg_free_result($query_id);
$temp_result = @$temp_q_id->fetch(PDO::FETCH_ASSOC);
$temp_q_id = null;
return ($temp_result) ? $temp_result['last_value'] : false;
}
}
return false;
}
/**
* Free sql result
*/
function sql_freeresult($query_id = false)
{
global $cache;
if ($query_id === false)
{
$query_id = $this->query_result;
}
if (@isset($cache->sql_rowset[$query_id]))
{
return $cache->sql_freeresult($query_id);
}
if (isset($this->open_queries[(int) $query_id]))
{
unset($this->open_queries[(int) $query_id]);
//return @pg_free_result($query_id);
return $query_id = null;
}
return false;
}
/**
* Escape string used in sql query
* Note: Do not use for bytea values if we may use them at a later stage
*/
function sql_escape($msg)
{
//return @pg_escape_string($msg);
//return @$this->db_connect_id->quote($msg);
return $msg;
/**
* Íàïèñàòü ñâîé escape
*/
}
/**
* Build LIKE expression
* @access private
*/
function _sql_like_expression($expression)
{
return $expression;
}
/**
* return sql error array
* @access private
*/
function _sql_error()
{
return array(
//'message' => (!$this->db_connect_id) ? @pg_last_error() : @pg_last_error($this->db_connect_id),
'message' => (!$this->db_connect_id) ? '' : @$this->db_connect_id->errorInfo(),
'code' => (!$this->db_connect_id) ? '' : @$this->db_connect_id->errorCode()
);
}
/**
* Close sql connection
* @access private
*/
function _sql_close()
{
//return @pg_close($this->db_connect_id);
$this->db_connect_id = null;
return TRUE;
}
/**
* Build db-specific report
* @access private
*/
function _sql_report($mode, $query = '')
{
switch ($mode)
{
case 'start':
$explain_query = $query;
if (preg_match('/UPDATE ([a-z0-9_]+).*?WHERE(.*)/s', $query, $m))
{
$explain_query = 'SELECT * FROM ' . $m[1] . ' WHERE ' . $m[2];
}
else if (preg_match('/DELETE FROM ([a-z0-9_]+).*?WHERE(.*)/s', $query, $m))
{
$explain_query = 'SELECT * FROM ' . $m[1] . ' WHERE ' . $m[2];
}
if (preg_match('/^SELECT/', $explain_query))
{
$html_table = false;
//if ($result = @pg_query($this->db_connect_id, "EXPLAIN $explain_query"))
if ($result = @$this->db_connect_id->query("EXPLAIN $explain_query"))
{
// while ($row = @pg_fetch_assoc($result, NULL))
while ($row = @$result->fetch(PDO::FETCH_ASSOC))
{
$html_table = $this->sql_report('add_select_row', $query, $html_table, $row);
}
}
// @pg_free_result($result);
$result = null;
if ($html_table)
{
$this->html_hold .= '</table>';
}
}
break;
case 'fromcache':
$endtime = explode(' ', microtime());
$endtime = $endtime[0] + $endtime[1];
// $result = @pg_query($this->db_connect_id, $query);
$result = @$this->db_connect_id->query($query);
// while ($void = @pg_fetch_assoc($result, NULL))
while ($void = @$result->fetch(PDO::FETCH_ASSOC))
{
// Take the time spent on parsing rows into account
}
// @pg_free_result($result);
$result = null;
$splittime = explode(' ', microtime());
$splittime = $splittime[0] + $splittime[1];
$this->sql_report('record_fromcache', $query, $endtime, $splittime);
break;
}
}
}
?>
).
