-<?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;

-}

-

-/**

-* Sqlite Database Abstraction Layer

-* Minimum Requirement: 2.8.2+

-* @package dbal

-*/

-class phpbb_dbal_sqlite extends phpbb_dbal

-{

- /**

- * @var string Database type. No distinction between versions or used extensions.

- */

- public $dbms_type = 'sqlite';

-

- /**

- * Database features

- *

- * <ul>

- * <li>multi_insert: Supports multi inserts</li>

- * <li>count_distinct: Supports COUNT(DISTINGT ...)</li>

- * <li>multi_table_deletion: Supports multiple table deletion</li>

- * <li>truncate: Supports table truncation</li>

- * </ul>

- *

- * @var array

- */

- public $features = array(

- 'multi_insert' => true,

- // like MS ACCESS, SQLite does not support COUNT(DISTINCT ...)

- 'count_distinct' => false,

- 'multi_table_deletion' => true,

- // can't truncate a table

- 'truncate' => false,

- );

-

- /**

- * @var array Database type map, column layout information

- */

- public $dbms_type_map = array(

- 'INT:' => 'int(%d)',

- 'BINT' => 'bigint(20)',

- 'UINT' => 'INTEGER UNSIGNED', //'mediumint(8) UNSIGNED',

- 'UINT:' => 'INTEGER UNSIGNED', // 'int(%d) UNSIGNED',

- 'TINT:' => 'tinyint(%d)',

- 'USINT' => 'INTEGER UNSIGNED', //'mediumint(4) UNSIGNED',

- 'BOOL' => 'INTEGER UNSIGNED', //'tinyint(1) UNSIGNED',

- 'VCHAR' => 'varchar(255)',

- 'VCHAR:' => 'varchar(%d)',

- 'CHAR:' => 'char(%d)',

- 'XSTEXT' => 'text(65535)',

- 'STEXT' => 'text(65535)',

- 'TEXT' => 'text(65535)',

- 'MTEXT' => 'mediumtext(16777215)',

- 'XSTEXT_UNI'=> 'text(65535)',

- 'STEXT_UNI' => 'text(65535)',

- 'TEXT_UNI' => 'text(65535)',

- 'MTEXT_UNI' => 'mediumtext(16777215)',

- 'TIMESTAMP' => 'INTEGER UNSIGNED', //'int(11) UNSIGNED',

- 'DECIMAL' => 'decimal(5,2)',

- 'DECIMAL:' => 'decimal(%d,2)',

- 'PDECIMAL' => 'decimal(6,3)',

- 'PDECIMAL:' => 'decimal(%d,3)',

- 'VCHAR_UNI' => 'varchar(255)',

- 'VCHAR_UNI:'=> 'varchar(%d)',

- 'VARBINARY' => 'blob',

- );

-

- /**

- * 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 = $database;

-

- $error = '';

- $this->db_connect_id = ($this->persistency) ? @sqlite_popen($this->server, 0666, $error) : @sqlite_open($this->server, 0666, $error);

-

- if ($this->db_connect_id)

- {

- @sqlite_query('PRAGMA short_column_names = 1', $this->db_connect_id);

- @sqlite_query('PRAGMA encoding = "UTF-8"', $this->db_connect_id);

- }

-

- return ($this->db_connect_id) ? true : array('message' => $error);

- }

-

- /**

- * 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('#sqlite_version')) === false)

- {

- $result = @sqlite_query('SELECT sqlite_version() AS version', $this->db_connect_id);

- $row = @sqlite_fetch_array($result, SQLITE_ASSOC);

-

- $this->sql_server_version = (!empty($row['version'])) ? $row['version'] : 0;

-

- if (phpbb::registered('acm'))

- {

- phpbb::$acm->put('#sqlite_version', $this->sql_server_version);

- }

- }

-

- return ($raw) ? $this->sql_server_version : 'SQLite ' . $this->sql_server_version;

- }

-

- /**

- * DB-specific base query method. See {@link phpbb_dbal::_sql_query() _sql_query()} for details.

- */

- protected function _sql_query($query)

- {

- return @sqlite_query($query, $this->db_connect_id);

- }

-

- /**

- * 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)

- {

- // if $total is set to 0 we do not want to limit the number of rows

- if ($total == 0)

- {

- $total = -1;

- }

-

- $query .= "\n LIMIT " . ((!empty($offset)) ? $offset . ', ' . $total : $total);

-

- return $this->sql_query($query, $cache_ttl);

- }

-

- /**

- * Close sql connection. See {@link phpbb_dbal::_sql_close() _sql_close()} for details.

- */

- protected function _sql_close()

- {

- return @sqlite_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 @sqlite_query('BEGIN', $this->db_connect_id);

- break;

-

- case 'commit':

- return @sqlite_query('COMMIT', $this->db_connect_id);

- break;

-

- case 'rollback':

- return @sqlite_query('ROLLBACK', $this->db_connect_id);

- break;

- }

-

- return true;

- }

-

- /**

- * Return number of affected rows. See {@link phpbb_dbal::sql_affectedrows() sql_affectedrows()} for details.

- */

- public function sql_affectedrows()

- {

- return ($this->db_connect_id) ? @sqlite_changes($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()

- {

- return ($this->db_connect_id) ? @sqlite_last_insert_rowid($this->db_connect_id) : false;

- }

-

- /**

- * Fetch current row. See {@link phpbb_dbal::_sql_fetchrow() _sql_fetchrow()} for details.

- */

- protected function _sql_fetchrow($query_id)

- {

- return @sqlite_fetch_array($query_id, SQLITE_ASSOC);

- }

-

- /**

- * Free query result. See {@link phpbb_dbal::_sql_freeresult() _sql_freeresult()} for details.

- */

- protected function _sql_freeresult($query_id)

- {

- return true;

- }

-

- /**

- * 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)

- {

- // Unlike LIKE, GLOB is case sensitive (unfortunatly). SQLite users need to live with it!

- // We only catch * and ? here, not the character map possible for file globbing.

- $expression = str_replace(array(chr(0) . '_', chr(0) . '%'), array(chr(0) . '?', chr(0) . '*'), $expression);

-

- $expression = str_replace(array('?', '*'), array("\?", "\*"), $expression);

- $expression = str_replace(array(chr(0) . "\?", chr(0) . "\*"), array('?', '*'), $expression);

-

- return 'GLOB \'' . $this->sql_escape($expression) . '\'';

- }

-

- /**

- * Escape string used in sql query. See {@link phpbb_dbal::sql_escape() sql_escape()} for details.

- */

- public function sql_escape($msg)

- {

- return @sqlite_escape_string($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 '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 = '')

- {

- }

- */

-

- /**

- * 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' => @sqlite_error_string(@sqlite_last_error($this->db_connect_id)),

- 'code' => @sqlite_last_error($this->db_connect_id)

- );

- }

-

- /**

- * 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];

-

- $result = @sqlite_query($query, $this->db_connect_id);

- while ($void = @sqlite_fetch_array($result, SQLITE_ASSOC))

- {

- // Take the time spent on parsing rows into account

- }

-

- $splittime = explode(' ', microtime());

- $splittime = $splittime[0] + $splittime[1];

-

- $this->sql_report('record_fromcache', $query, $endtime, $splittime);

-

- break;

- }

- }

-}

-

-?> \ No newline at end of file