73 lines
2.5 KiB
PHP
73 lines
2.5 KiB
PHP
<?php
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/**
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* mssql driver
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*/
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class Doctrine_Connection_Mssql extends Doctrine_Connection {
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/**
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* returns the next value in the given sequence
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* @param string $sequence
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* @return integer
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*/
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public function getNextID($sequence) {
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$this->query("INSERT INTO $sequence (vapor) VALUES (0)");
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$stmt = $this->query("SELECT @@IDENTITY FROM $sequence");
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$data = $stmt->fetch(PDO::FETCH_NUM);
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return $data[0];
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}
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/**
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* Adds an adapter-specific LIMIT clause to the SELECT statement.
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* [ borrowed from Zend Framework ]
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*
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* @param string $query
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* @param mixed $limit
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* @param mixed $offset
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* @link http://lists.bestpractical.com/pipermail/rt-devel/2005-June/007339.html
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* @return string
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*/
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public function modifyLimitQuery($query, $limit, $offset) {
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if ($limit) {
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// we need the starting SELECT clause for later
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$select = 'SELECT ';
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if (preg_match('/^[[:space:]*SELECT[[:space:]]*DISTINCT/i', $query, $matches) == 1)
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$select .= 'DISTINCT ';
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$length = strlen($select);
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// is there an offset?
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if (! $offset) {
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// no offset, it's a simple TOP count
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return "$select TOP $count" . substr($query, $length);
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}
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// the total of the count **and** the offset, combined.
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// this will be used in the "internal" portion of the
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// hacked-up statement.
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$total = $count + $offset;
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// build the "real" order for the external portion.
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$order = implode(',', $parts['order']);
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// build a "reverse" order for the internal portion.
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$reverse = $order;
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$reverse = str_ireplace(" ASC", " \xFF", $reverse);
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$reverse = str_ireplace(" DESC", " ASC", $reverse);
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$reverse = str_ireplace(" \xFF", " DESC", $reverse);
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// create a main statement that replaces the SELECT
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// with a SELECT TOP
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$main = "\n$select TOP $total" . substr($query, $length) . "\n";
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// build the hacked-up statement.
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// do we really need the "as" aliases here?
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$query = "SELECT * FROM ("
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. "SELECT TOP $count * FROM ($main) AS select_limit_rev ORDER BY $reverse"
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. ") AS select_limit ORDER BY $order";
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}
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return $query;
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}
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}
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?>
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