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