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453 lines
9.1 KiB
PHP
453 lines
9.1 KiB
PHP
<?php
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/**
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*
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* @package dbal
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* @version $Id$
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* @copyright (c) 2005 phpBB Group
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* @license http://opensource.org/licenses/gpl-license.php GNU Public License
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*
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*/
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/**
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* @ignore
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*/
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if (!defined('SQL_LAYER'))
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{
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define('SQL_LAYER', 'postgresql');
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include($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
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/**
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* @package dbal
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* PostgreSQL Database Abstraction Layer
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* Minimum Requirement is Version 7.3+
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*/
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class dbal_postgres extends dbal
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{
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function sql_connect($sqlserver, $sqluser, $sqlpassword, $database, $port = false, $persistency = false)
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{
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$this->connect_string = '';
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if ($sqluser)
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{
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$this->connect_string .= "user=$sqluser ";
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}
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if ($sqlpassword)
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{
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$this->connect_string .= "password=$sqlpassword ";
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}
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if ($sqlserver)
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{
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if (ereg(":", $sqlserver))
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{
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list($sqlserver, $sqlport) = split(":", $sqlserver);
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$this->connect_string .= "host=$sqlserver port=$sqlport ";
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}
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else
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{
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if ($sqlserver != "localhost")
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{
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$this->connect_string .= "host=$sqlserver ";
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}
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if ($port)
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{
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$this->connect_string .= "port=$port ";
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}
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}
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}
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if ($database)
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{
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$this->dbname = $database;
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$this->connect_string .= "dbname=$database";
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}
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$this->persistency = $persistency;
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$this->db_connect_id = ($this->persistency) ? @pg_pconnect($this->connect_string) : @pg_connect($this->connect_string);
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return ($this->db_connect_id) ? $this->db_connect_id : $this->sql_error('');
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}
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//
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// Other base methods
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//
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function sql_close()
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{
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if (!$this->db_connect_id)
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{
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return false;
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}
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if ($this->transaction)
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{
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@pg_exec($this->db_connect_id, 'COMMIT');
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}
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return @pg_close($this->db_connect_id);
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}
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function sql_transaction($status = 'begin')
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{
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switch ($status)
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{
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case 'begin':
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$result = @pg_exec($this->db_connect_id, 'BEGIN');
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$this->transaction = true;
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break;
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case 'commit':
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$result = @pg_exec($this->db_connect_id, 'COMMIT');
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$this->transaction = false;
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if (!$result)
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{
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@pg_exec($this->db_connect_id, 'ROLLBACK');
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}
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break;
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case 'rollback':
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$result = @pg_exec($this->db_connect_id, 'ROLLBACK');
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$this->transaction = false;
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break;
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default:
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$result = true;
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}
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return $result;
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}
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// Base query method
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function sql_query($query = '', $cache_ttl = 0)
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{
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if ($query != '')
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{
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global $cache;
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// EXPLAIN only in extra debug mode
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if (defined('DEBUG_EXTRA'))
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{
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$this->sql_report('start', $query);
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}
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$this->query_result = ($cache_ttl && method_exists($cache, 'sql_load')) ? $cache->sql_load($query) : false;
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if (!$this->query_result)
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{
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$this->num_queries++;
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$this->last_query_text = $query;
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if (($this->query_result = @pg_exec($this->db_connect_id, $query)) === false)
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{
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$this->sql_error($query);
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}
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if (defined('DEBUG_EXTRA'))
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{
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$this->sql_report('stop', $query);
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}
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if ($cache_ttl && method_exists($cache, 'sql_save'))
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{
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$cache->sql_save($query, $this->query_result, $cache_ttl);
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}
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}
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else if (defined('DEBUG_EXTRA'))
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{
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$this->sql_report('fromcache', $query);
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}
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}
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else
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{
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return false;
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}
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return ($this->query_result) ? $this->query_result : false;
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}
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function sql_query_limit($query, $total, $offset = 0, $cache_ttl = 0)
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{
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if ($query != '')
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{
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$this->query_result = false;
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// if $total is set to 0 we do not want to limit the number of rows
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if ($total == 0)
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{
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$total = -1;
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}
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$query .= "\n LIMIT $total OFFSET $offset";
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return $this->sql_query($query, $cache_ttl);
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}
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else
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{
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return false;
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}
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}
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// Other query methods
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//
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// NOTE :: Want to remove _ALL_ reliance on sql_numrows from core code ...
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// don't want this here by a middle Milestone
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function sql_numrows($query_id = false)
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{
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if (!$query_id)
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{
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$query_id = $this->query_result;
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}
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return ($query_id) ? @pg_numrows($query_id) : false;
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}
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function sql_affectedrows($query_id = false)
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{
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if (!$query_id)
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{
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$query_id = $this->query_result;
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}
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return ($query_id) ? @pg_cmdtuples($query_id) : false;
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}
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function sql_fetchrow($query_id = false)
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{
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global $cache;
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if (!$query_id)
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{
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$query_id = $this->query_result;
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}
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if (!isset($this->rownum[$query_id]))
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{
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$this->rownum[$query_id] = 0;
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}
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if (isset($cache->sql_rowset[$query_id]))
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{
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return $cache->sql_fetchrow($query_id);
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}
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$result = @pg_fetch_array($query_id, NULL, PGSQL_ASSOC);
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if ($result)
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{
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$this->rownum[$query_id]++;
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}
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return $result;
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}
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function sql_fetchrowset($query_id = false)
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{
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if (!$query_id)
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{
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$query_id = $this->query_result;
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}
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$result = array();
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if ($query_id)
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{
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unset($this->rowset[$query_id]);
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unset($this->row[$query_id]);
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$result = array();
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while ($this->rowset[$query_id] = $this->sql_fetchrow($query_id))
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{
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$result[] = $this->rowset[$query_id];
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}
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return $result;
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}
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return false;
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}
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function sql_fetchfield($field, $rownum = -1, $query_id = false)
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{
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if (!$query_id)
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{
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$query_id = $this->query_result;
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}
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if ($query_id)
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{
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if ($rownum > -1)
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{
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if (@function_exists('pg_result_seek'))
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{
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@pg_result_seek($query_id, $rownum);
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$row = @pg_fetch_assoc($query_id);
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$result = isset($row[$field]) ? $row[$field] : false;
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}
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else
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{
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$this->sql_rowseek($offset, $query_id);
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$row = $this->sql_fetchrow($query_id);
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$result = isset($row[$field]) ? $row[$field] : false;
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}
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}
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else
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{
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if (empty($this->row[$query_id]) && empty($this->rowset[$query_id]))
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{
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if ($this->row[$query_id] = $this->sql_fetchrow($query_id))
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{
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$result = $this->row[$query_id][$field];
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}
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}
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else
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{
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if ($this->rowset[$query_id])
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{
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$result = $this->rowset[$query_id][$field];
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}
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elseif ($this->row[$query_id])
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{
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$result = $this->row[$query_id][$field];
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}
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}
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}
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return $result;
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}
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return false;
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}
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function sql_rowseek($offset, $query_id = false)
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{
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if (!$query_id)
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{
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$query_id = $this->query_result;
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}
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if ($query_id)
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{
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if ($offset > -1)
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{
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if (@function_exists('pg_result_seek'))
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{
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@pg_result_seek($query_id, $rownum);
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}
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else
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{
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for ($i = $this->rownum[$query_id]; $i < $offset; $i++)
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{
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$this->sql_fetchrow($query_id);
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}
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}
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return true;
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}
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else
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{
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return false;
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}
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}
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return false;
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}
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function sql_nextid()
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{
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$query_id = $this->query_result;
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if ($query_id && $this->last_query_text != '')
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{
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if (preg_match("/^INSERT[\t\n ]+INTO[\t\n ]+([a-z0-9\_\-]+)/is", $this->last_query_text, $tablename))
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{
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$query = "SELECT currval('" . $tablename[1] . "_id_seq') AS last_value";
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$temp_q_id = @pg_exec($this->db_connect_id, $query);
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if (!$temp_q_id)
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{
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return false;
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}
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$temp_result = @pg_fetch_array($temp_q_id, NULL, PGSQL_ASSOC);
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return ($temp_result) ? $temp_result['last_value'] : false;
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}
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}
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return false;
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}
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function sql_freeresult($query_id = false)
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{
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if (!$query_id)
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{
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$query_id = $this->query_result;
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}
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return (is_resource($query_id)) ? @pg_freeresult($query_id) : false;
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}
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function sql_escape($msg)
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{
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return str_replace("'", "''", str_replace('\\', '\\\\', $msg));
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}
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function db_sql_error()
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{
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return array(
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'message' => @pg_errormessage(),
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'code' => ''
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);
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}
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function _sql_report($mode, $query = '')
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{
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global $cache, $starttime, $phpbb_root_path;
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static $curtime, $query_hold, $html_hold;
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static $sql_report = '';
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static $cache_num_queries = 0;
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switch ($mode)
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{
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case 'start':
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$query_hold = $query;
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$html_hold = '';
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$curtime = explode(' ', microtime());
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$curtime = $curtime[0] + $curtime[1];
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break;
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case 'fromcache':
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$endtime = explode(' ', microtime());
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$endtime = $endtime[0] + $endtime[1];
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$result = @pg_exec($this->db_connect_id, $query);
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while ($void = @pg_fetch_array($result, NULL, PGSQL_ASSOC))
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{
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// Take the time spent on parsing rows into account
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}
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$splittime = explode(' ', microtime());
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$splittime = $splittime[0] + $splittime[1];
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$time_cache = $endtime - $curtime;
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$time_db = $splittime - $endtime;
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$color = ($time_db > $time_cache) ? 'green' : 'red';
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$sql_report .= '<hr width="100%"/><br /><table class="bg" width="100%" cellspacing="1" cellpadding="4" border="0"><tr><th>Query results obtained from the cache</th></tr><tr><td class="row1"><textarea style="font-family:\'Courier New\',monospace;width:100%" rows="5">' . preg_replace('/\t(AND|OR)(\W)/', "\$1\$2", htmlspecialchars(preg_replace('/[\s]*[\n\r\t]+[\n\r\s\t]*/', "\n", $query))) . '</textarea></td></tr></table><p align="center">';
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$sql_report .= 'Before: ' . sprintf('%.5f', $curtime - $starttime) . 's | After: ' . sprintf('%.5f', $endtime - $starttime) . 's | Elapsed [cache]: <b style="color: ' . $color . '">' . sprintf('%.5f', ($time_cache)) . 's</b> | Elapsed [db]: <b>' . sprintf('%.5f', $time_db) . 's</b></p>';
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// Pad the start time to not interfere with page timing
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$starttime += $time_db;
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@pg_freeresult($result);
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$cache_num_queries++;
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break;
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}
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}
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}
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} // if ... defined
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?>
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