105 lines
2.2 KiB
PHP
105 lines
2.2 KiB
PHP
<?php
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/**
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* This file is part of the Propel package.
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*
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* @license MIT License
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*/
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/**
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* This adapter is used when you do not have a database installed.
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*
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* @author Hans Lellelid <hans@xmpl.org> (Propel)
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* @author Jon S. Stevens <jon@clearink.com> (Torque)
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* @author Brett McLaughlin <bmclaugh@algx.net> (Torque)
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* @version $Revision: 1612 $
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* @package propel.runtime.adapter
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*/
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class DBNone extends DBAdapter
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{
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/**
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* @see DBAdapter::initConnection()
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*/
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public function initConnection(PDO $con, array $settings)
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{
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}
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/**
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* This method is used to ignore case.
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*
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* @param in The string to transform to upper case.
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* @return The upper case string.
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*/
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public function toUpperCase($in)
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{
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return $in;
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}
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/**
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* This method is used to ignore case.
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*
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* @param in The string whose case to ignore.
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* @return The string in a case that can be ignored.
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*/
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public function ignoreCase($in)
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{
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return $in;
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}
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/**
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* Returns SQL which concatenates the second string to the first.
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*
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* @param string String to concatenate.
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* @param string String to append.
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* @return string
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*/
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public function concatString($s1, $s2)
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{
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return ($s1 . $s2);
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}
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/**
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* Returns SQL which extracts a substring.
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*
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* @param string String to extract from.
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* @param int Offset to start from.
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* @param int Number of characters to extract.
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* @return string
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*/
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public function subString($s, $pos, $len)
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{
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return substr($s, $pos, $len);
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}
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/**
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* Returns SQL which calculates the length (in chars) of a string.
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*
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* @param string String to calculate length of.
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* @return string
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*/
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public function strLength($s)
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{
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return strlen($s);
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}
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/**
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* Modifies the passed-in SQL to add LIMIT and/or OFFSET.
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*/
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public function applyLimit(&$sql, $offset, $limit)
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{
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}
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/**
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* Gets the SQL string that this adapter uses for getting a random number.
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*
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* @param mixed $seed (optional) seed value for databases that support this
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*/
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public function random($seed = null)
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{
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}
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}
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