<?php
/**
*
* @package dbal
* @version $Id$
* @copyright (c) 2005 phpBB Group
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
*
*/
/**
* @ignore
*/
if (!defined('IN_PHPBB'))
{
exit;
}
/**
* Firebird/Interbase Database Abstraction Layer
* Minimum Requirement: 2.0+
* @package dbal
*/
class phpbb_dbal_firebird extends phpbb_dbal
{
/**
* @var string Database type. No distinction between versions or used extensions.
*/
public $dbms_type = 'firebird';
/**
* @var array Database type map, column layout information
*/
public $dbms_type_map = array(
'INT:' => 'INTEGER',
'BINT' => 'DOUBLE PRECISION',
'UINT' => 'INTEGER',
'UINT:' => 'INTEGER',
'TINT:' => 'INTEGER',
'USINT' => 'INTEGER',
'BOOL' => 'INTEGER',
'VCHAR' => 'VARCHAR(255) CHARACTER SET NONE',
'VCHAR:' => 'VARCHAR(%d) CHARACTER SET NONE',
'CHAR:' => 'CHAR(%d) CHARACTER SET NONE',
'XSTEXT' => 'BLOB SUB_TYPE TEXT CHARACTER SET NONE',
'STEXT' => 'BLOB SUB_TYPE TEXT CHARACTER SET NONE',
'TEXT' => 'BLOB SUB_TYPE TEXT CHARACTER SET NONE',
'MTEXT' => 'BLOB SUB_TYPE TEXT CHARACTER SET NONE',
'XSTEXT_UNI'=> 'VARCHAR(100) CHARACTER SET UTF8',
'STEXT_UNI' => 'VARCHAR(255) CHARACTER SET UTF8',
'TEXT_UNI' => 'BLOB SUB_TYPE TEXT CHARACTER SET UTF8',
'MTEXT_UNI' => 'BLOB SUB_TYPE TEXT CHARACTER SET UTF8',
'TIMESTAMP' => 'INTEGER',
'DECIMAL' => 'DOUBLE PRECISION',
'DECIMAL:' => 'DOUBLE PRECISION',
'PDECIMAL' => 'DOUBLE PRECISION',
'PDECIMAL:' => 'DOUBLE PRECISION',
'VCHAR_UNI' => 'VARCHAR(255) CHARACTER SET UTF8',
'VCHAR_UNI:'=> 'VARCHAR(%d) CHARACTER SET UTF8',
'VARBINARY' => 'CHAR(255) CHARACTER SET NONE',
);
/**
* @var string Last query executed. We need this for sql_nextid()
*/
var $last_query_text = '';
/**
* @var resource Attached service handle.
*/
var $service_handle = false;
/**
* @var array Database features
*/
public $features = array(
'multi_insert' => false,
'count_distinct' => true,
'multi_table_deletion' => true,
'truncate' => false,
);
/**
* Connect to server. See {@link phpbb_dbal::sql_connect() sql_connect()} for details.
*/
public function sql_connect($server, $user, $password, $database, $port = false, $persistency = false , $new_link = false)
{
$this->persistency = $persistency;
$this->user = $user;
$this->server = $server . (($port) ? ':' . $port : '');
$this->dbname = str_replace('\\', '/', $database);
// There are three possibilities to connect to an interbase db
if (!$this->server)
{
$use_database = $this->dbname;
}
else if (strpos($this->server, '//') === 0)
{
$use_database = $this->server . $this->dbname;
}
else
{
$use_database = $this->server . ':' . $this->dbname;
}
$this->db_connect_id = ($this->persistency) ? @ibase_pconnect($use_database, $this->user, $password, false, false, 3) : @ibase_connect($use_database, $this->user, $password, false, false, 3);
if (!$this->db_connect_id)
{
return $this->sql_error('');
}
$this->service_handle = ($this->server) ? @ibase_service_attach($this->server, $this->user, $password) : false;
return $this->db_connect_id;
}
/**
* Version information about used database. See {@link phpbb_dbal::sql_server_info() sql_server_info()} for details.
*/
public function sql_server_info($raw = false)
{
if (!phpbb::registered('acm') || ($this->sql_server_version = phpbb::$acm->get('#firebird_version')) === false)
{
$version = false;
if ($this->service_handle !== false)
{
$val = @ibase_server_info($this->service_handle, IBASE_SVC_SERVER_VERSION);
preg_match('#V([\d.]+)#', $val, $version);
$version = (!empty($version[1])) ? $version[1] : false;
}
$this->sql_server_version = (!$version) ? '2.0' : $version;
if (phpbb::registered('acm'))
{
phpbb::$acm->put('#firebird_version', $this->sql_server_version);
}
}
return ($raw) ? $this->sql_server_version : 'Firebird/Interbase ' . $this->sql_server_version;
}
/**
* DB-specific base query method. See {@link phpbb_dbal::_sql_query() _sql_query()} for details.
*/
protected function _sql_query($query)
{
$this->last_query_text = $query;
$array = array();
// We overcome Firebird's 32767 char limit by binding vars
if (strlen($query) > 32767)
{
if (preg_match('/^(INSERT INTO[^(]++)\\(([^()]+)\\) VALUES[^(]++\\((.*?)\\)$/s', $query, $regs))
{
if (strlen($regs[3]) > 32767)
{
preg_match_all('/\'(?:[^\']++|\'\')*+\'|[\d-.]+/', $regs[3], $vals, PREG_PATTERN_ORDER);
$inserts = $vals[0];
unset($vals);
foreach ($inserts as $key => $value)
{
// check to see if this thing is greater than the max + 'x2
if (!empty($value) && $value[0] === "'" && strlen($value) > 32769)
{
$inserts[$key] = '?';
$array[] = str_replace("''", "'", substr($value, 1, -1));
}
}
$query = $regs[1] . '(' . $regs[2] . ') VALUES (' . implode(', ', $inserts) . ')';
}
}
else if (preg_match('/^(UPDATE ([\\w_]++)\\s+SET )([\\w_]++\\s*=\\s*(?:\'(?:[^\']++|\'\')*+\'|\\d+)(?:,\\s*[\\w_]++\\s*=\\s*(?:\'(?:[^\']++|\'\')*+\'|[\d-.]+))*+)\\s+(WHERE.*)$/s', $query, $data))
{
if (strlen($data[3]) > 32767)
{
$update = $data[1];
$where = $data[4];
preg_match_all('/(\\w++)\\s*=\\s*(\'(?:[^\']++|\'\')*+\'|[\d-.]++)/', $data[3], $temp, PREG_SET_ORDER);
unset($data);
$cols = array();
foreach ($temp as $value)
{
// check to see if this thing is greater than the max + 'x2
if (!empty($value[2]) && $value[2][0] === "'" && strlen($value[2]) > 32769)
{
$array[] = str_replace("''", "'", substr($value[2], 1, -1));
$cols[] = $value[1] . '=?';
}
else
{
$cols[] = $value[1] . '=' . $value[2];
}
}
$query = $update . implode(', ', $cols) . ' ' . $where;
unset($cols);
}
}
}
if (sizeof($array))
{
$p_query = @ibase_prepare($this->db_connect_id, $query);
array_unshift($array, $p_query);
$result = call_user_func_array('ibase_execute', $array);
unset($array);
}
else
{
$result = @ibase_query($this->db_connect_id, $query);
if ($result && !$this->transaction)
{
@ibase_commit_ret();
}
}
return $result;
}
/**
* Build LIMIT query and run it. See {@link phpbb_dbal::_sql_query_limit() _sql_query_limit()} for details.
*/
protected function _sql_query_limit($query, $total, $offset, $cache_ttl)
{
$query = 'SELECT FIRST ' . $total . ((!empty($offset)) ? ' SKIP ' . $offset : '') . substr($query, 6);
return $this->sql_query($query, $cache_ttl);
}
/**
* Close sql connection. See {@link phpbb_dbal::_sql_close() _sql_close()} for details.
*/
protected function _sql_close()
{
if ($this->service_handle !== false)
{
@ibase_service_detach($this->service_handle);
}
return @ibase_close($this->db_connect_id);
}
/**
* SQL Transaction. See {@link phpbb_dbal::_sql_transaction() _sql_transaction()} for details.
*/
protected function _sql_transaction($status)
{
switch ($status)
{
case 'begin':
return true;
break;
case 'commit':
return @ibase_commit();
break;
case 'rollback':
return @ibase_rollback();
break;
}
return true;
}
/**
* Return number of affected rows. See {@link phpbb_dbal::sql_affectedrows() sql_affectedrows()} for details.
*/
public function sql_affectedrows()
{
return ($this->db_connect_id) ? @ibase_affected_rows($this->db_connect_id) : false;
}
/**
* Get last inserted id after insert statement. See {@link phpbb_dbal::sql_nextid() sql_nextid()} for details.
*/
public function sql_nextid()
{
if (!$this->query_result || !$this->last_query_text)
{
return false;
}
if (preg_match('#^INSERT[\t\n ]+INTO[\t\n ]+([a-z0-9\_\-]+)#i', $this->last_query_text, $tablename))
{
$sql = 'SELECT GEN_ID(' . $tablename[1] . '_gen, 0) AS new_id FROM RDB$DATABASE';
if (!($temp_q_id = @ibase_query($this->db_connect_id, $sql)))
{
return false;
}
$temp_result = @ibase_fetch_assoc($temp_q_id);
@ibase_free_result($temp_q_id);
return ($temp_result) ? $temp_result['NEW_ID'] : false;
}
return false;
}
/**
* Fetch current row. See {@link phpbb_dbal::_sql_fetchrow() _sql_fetchrow()} for details.
*/
protected function _sql_fetchrow($query_id)
{
$cur_row = @ibase_fetch_object($query_id, IBASE_TEXT);
if (!$cur_row)
{
return false;
}
foreach (get_object_vars($cur_row) as $key => $value)
{
$row[strtolower($key)] = (is_string($value)) ? trim(str_replace(array("\\0", "\\n"), array("\0", "\n"), $value)) : $value;
}
return (sizeof($row)) ? $row : false;
}
/**
* Free query result. See {@link phpbb_dbal::_sql_freeresult() _sql_freeresult()} for details.
*/
protected function _sql_freeresult($query_id)
{
return @ibase_free_result($query_id);
}
/**
* Correctly adjust LIKE expression for special characters. See {@link phpbb_dbal::_sql_like_expression() _sql_like_expression()} for details.
*/
protected function _sql_like_expression($expression)
{
return $expression . " ESCAPE '\\'";
}
/**
* Escape string used in sql query. See {@link phpbb_dbal::sql_escape() sql_escape()} for details.
*/
public function sql_escape($msg)
{
return str_replace(array("'", "\0"), array("''", ''), $msg);
}
/**
* Expose a DBMS specific function. See {@link phpbb_dbal::sql_function() sql_function()} for details.
*/
public function sql_function($type, $col)
{
switch ($type)
{
case 'length_varchar':
case 'length_text':
return 'OCTET_LENGTH(' . $col . ')';
break;
}
}
/**
* Handle data by using prepared statements. See {@link phpbb_dbal::sql_handle_data() sql_handle_data()} for details.
public function sql_handle_data($type, $table, $data, $where = '')
{
if ($type == 'INSERT')
{
$stmt = ibase_prepare($this->db_connect_id, "INSERT INTO $table (". implode(', ', array_keys($data)) . ") VALUES (" . substr(str_repeat('?, ', sizeof($data)) ,0, -1) . ')');
}
else
{
$query = "UPDATE $table SET ";
$set = array();
foreach (array_keys($data) as $key)
{
$set[] = "$key = ?";
}
$query .= implode(', ', $set);
if ($where !== '')
{
$query .= $where;
}
$stmt = ibase_prepare($this->db_connect_id, $query);
}
// get the stmt onto the top of the function arguments
array_unshift($data, $stmt);
call_user_func_array('ibase_execute', $data);
}
*/
/**
* Build DB-specific query bits. See {@link phpbb_dbal::_sql_custom_build() _sql_custom_build()} for details.
*/
protected function _sql_custom_build($stage, $data)
{
return $data;
}
/**
* return sql error array. See {@link phpbb_dbal::_sql_error() _sql_error()} for details.
*/
protected function _sql_error()
{
return array(
'message' => @ibase_errmsg(),
'code' => @ibase_errcode()
);
}
/**
* Run DB-specific code to build SQL Report to explain queries, show statistics and runtime information. See {@link phpbb_dbal::_sql_report() _sql_report()} for details.
*/
protected function _sql_report($mode, $query = '')
{
switch ($mode)
{
case 'start':
break;
case 'fromcache':
$endtime = explode(' ', microtime());
$endtime = $endtime[0] + $endtime[1];
$result = @ibase_query($this->db_connect_id, $query);
while ($void = @ibase_fetch_object($result, IBASE_TEXT))
{
// Take the time spent on parsing rows into account
}
@ibase_free_result($result);
$splittime = explode(' ', microtime());
$splittime = $splittime[0] + $splittime[1];
$this->sql_report('record_fromcache', $query, $endtime, $splittime);
break;
}
}
}
?>