'%server %user %password %database',
'connect' => '%server %user %password %database',
'query' => '%link %query',
'error_num' => '%link',
'error_str' => '%link',
'escape_string' => '%link %string',
'escape_binary' => '%string',
'unescape_binary' => '%string',
'fetch_assoc' => '%result',
'fetch_row' => '%result',
'fetch_object' => '%result',
'free_result' => '%result',
'insert_id' => '%link',
'num_rows' => '%result',
'affected_rows' => '%result'
);
// ###################################################################
/**
* Constructor
*/
function __construct(&$registry)
{
$this->registry =& $registry;
// because ivars and call_user_func() are conspiring against us...
foreach ($this->commands AS $key => $string)
{
if (strpos($string, '$this->') !== false)
{
$this->commands["$key"] = array($this, str_replace('$this->', '', $string));
}
}
}
// ###################################################################
/**
* (PHP 4) Constructor
*/
function DB_Abstract(&$registry)
{
$this->__construct($registry);
}
// ###################################################################
/**
* Initializes the class and all subclasses under a common package name
*
* @access protected
*
* @return string The package name
*/
function init_as_package()
{
if (!defined('ISSO_DB_LAYER'))
{
define('ISSO_DB_LAYER', get_class($this));
trigger_error('ISSO_DB_LAYER was defined automatically by DB::init_as_package(). Define the constant yourself to remove this warning', E_USER_WARNING);
}
return 'db';
}
// ###################################################################
/**
* Connect to a the specified database
*
* @access public
*
* @param string Server name
* @param string User name
* @param string Password
* @param string Database name
* @param bool Use p-connect?
*
* @return bool Result of connect
*/
function connect($server, $user, $password, $database, $pconnect)
{
if ($this->dblink == false)
{
$this->dblink = call_user_func(($pconnect ? $this->commands['pconnect'] : $this->commands['connect']), $server, $user, $password, $database);
if ($this->dblink == false)
{
$this->error('DB-Link == false, cannot connect');
return false;
}
return true;
}
}
// ###################################################################
/**
* Send a query to the open database link
*
* @access public
*
* @param string Query string
*
* @return integer Result
*/
function query($string)
{
$time = microtime();
$this->querystr = $string;
$this->result = @call_user_func($this->commands['query'], $this->dblink, $string);
if (!$this->result)
{
$this->error('Invalid SQL query');
}
$this->history[] = $history = array('query' => $string, 'time' => ($this->registry->is_loaded('functions') ? $this->registry->modules['functions']->fetch_microtime_diff($time) : 0), 'trace' => $this->registry->format_debug_trace(debug_backtrace()));
if (defined('ISSO_SHOW_QUERIES_LIVE'))
{
if (constant('ISSO_SHOW_QUERIES_LIVE'))
{
print($this->construct_query_debug($history));
}
}
return $this->result;
}
// ###################################################################
/**
* Escape a string (depending on character set, if supported)
*
* @access public
*
* @param string String to be escaped
*
* @return string Escaped string
*/
function escape_string($string)
{
return call_user_func($this->commands['escape_string'], $this->dblink, $string);
}
// ###################################################################
/**
* Escapes a binary string for insertion into the database
*
* @access public
*
* @param string Unescaped data
*
* @return string Escaped binary data
*/
function escape_binary($binary)
{
return call_user_func($this->commands['escape_binary'], $binary);
}
// ###################################################################
/**
* Unescapes a binary string that was fetched from the database
*
* @access public
*
* @param string Escaped data
*
* @return string Unescaped binary data
*/
function unescape_binary($binary)
{
return call_user_func($this->commands['unescape_binary'], $binary);
}
// ###################################################################
/**
* Fetch the query result as an array
*
* @access public
*
* @param integer Result
* @param bool Return an associative array?
*
* @return array A row of the query result
*/
function fetch_array($result, $assoc = true)
{
return call_user_func($this->commands[ ($assoc ? 'fetch_assoc' : 'fetch_row') ], $result);
}
// ###################################################################
/**
* Fetch the query result as an object
*
* @access public
*
* @param integer Result
*
* @return object An object with the query result
*/
function fetch_object($result)
{
return call_user_func($this->commands['fetch_object'], $result);
}
// ###################################################################
/**
* Send a query and return the first row of the results
*
* @access public
*
* @param string Query string
* @param string Result return function (in the database layer)
*
* @return mixed Results in variable formats
*/
function query_first($string, $callback = 'fetch_array')
{
$resource = $this->query($string);
if ($resource)
{
$return = $this->$callback($resource);
$this->free_result($resource);
return $return;
}
else
{
return false;
}
}
// ###################################################################
/**
* Free the current query result
*
* @access public
*
* @param integer Result
*/
function free_result($result)
{
call_user_func($this->commands['free_result'], $result);
$this->result = null;
$this->querystr = '';
}
// ###################################################################
/**
* Fetch the unique ID of the record just inserted
*
* @access public
*
* @return integer Insert-ID
*/
function insert_id()
{
return call_user_func($this->commands['insert_id'], $this->dblink);
}
// ###################################################################
/**
* Fetch the number of rows in the result
*
* @access public
*
* @param integer Result
*
* @return integer Number of rows
*/
function num_rows($result)
{
return call_user_func($this->commands['num_rows'], $result);
}
// ###################################################################
/**
* Fetch the number of rows affected by the query
*
* @access public
*
* @param integer Result
*
* @return integer Number of affected rows
*/
function affected_rows($result)
{
return call_user_func($this->commands['affected_rows'], $result);
}
// ###################################################################
/**
* Sends the command to start a transaction. This command should never
* be reached as it's always overridden
*
* @access public
*/
function transaction_start()
{
trigger_error('DB_Abstract::transaction_start() needs to be overridden when subclassed', E_USER_ERROR);
}
// ###################################################################
/**
* Sends the command to set this as a savepoint. This command should never
* be reached as it's always overridden
*
* @access public
*
* @param string Named savepoint
*/
function transaction_savepoint($name)
{
trigger_error('DB_Abstract::transaction_savepoint() needs to be overridden when subclassed', E_USER_ERROR);
}
// ###################################################################
/**
* Sends the command to rollback to a given savepoint. This command
* should never be reached as it's always overridden
*
* @access public
*
* @param string Named savepoint
*/
function transaction_rollback($name)
{
trigger_error('DB_Abstract::transaction_rollback() needs to be overridden when subclassed', E_USER_ERROR);
}
// ###################################################################
/**
* Sends the command to commit the entire transaction. This command
* should never be reached as it's always overridden
*
* @access public
*/
function transaction_commit($name)
{
trigger_error('DB_Abstract::transaction_commit() needs to be overridden when subclassed', E_USER_ERROR);
}
// ###################################################################
/**
* Constructs a table of query information output that is used in some
* other modules to display a list of queries. This merely formats
* a DB->history array entry nicely
*
* @access public
*
* @param array An entry from DB->history
*
* @return string A formatted table block
*/
function construct_query_debug($query)
{
$block = "Query:\n\n" . $this->registry->entity_encode($query['query']) . "
\n";
$block .= "\n\t\n\t\t";
$block .= "Time: $query[time]
\n\t\t
\n\t\t";
$block .= "Backtrace:\n\t\t" . implode("
\n", $query['trace']) . " \n\t | \n
";
return $this->registry->message('Query Debug', $block, 1, true, false, 0);
}
// ###################################################################
/**
* Error wrapper for ISSO->message()
*
* @access protected
*
* @param string User defined error message
*/
function error($message)
{
if ($this->showerrors)
{
if ($this->dblink)
{
$this->errnum = call_user_func($this->commands['error_num'], $this->dblink);
$this->errstr = call_user_func($this->commands['error_str'], $this->dblink);
}
$style['code'] = 'font-family: \'Courier New\', Courier, mono; font-size: 11px;';
$message_prepped = "\n";
$message_prepped .= "\n\t» Query:\n
" . htmlspecialchars($this->querystr) ."
\n
";
$message_prepped .= "\n\t» Error Number: " . $this->errnum . "\n
";
$message_prepped .= "\n\t» Error Message: " . $this->errstr . "\n
";
$message_prepped .= "\n\t» Additional Notes: " . $message . "\n
";
$message_prepped .= "\n\t» File: " . $_SERVER['PHP_SELF'] . "\n";
$message_prepped .= "\n\n
";
$this->registry->message('Database Error in `' . $this->registry->application . '`', $message_prepped, 3);
exit;
}
}
}
/*=====================================================================*\
|| ###################################################################
|| # $HeadURL$
|| # $Id$
|| ###################################################################
\*=====================================================================*/
?>