silverstripe-mssql/code/SQLServerQuery.php

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<?php
namespace SilverStripe\MSSQL;
use DateTime;
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use SilverStripe\ORM\Connect\SS_Query;
/**
* A result-set from a MSSQL database.
*/
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class SQLServerQuery extends SS_Query
{
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/**
* The SQLServerConnector object that created this result set.
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*
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* @var SQLServerConnector
*/
private $connector;
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/**
* The internal MSSQL handle that points to the result set.
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*
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* @var resource
*/
private $handle;
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/**
* Hook the result-set given into a Query class, suitable for use by sapphire.
* @param SQLServerConnector $connector The database object that created this query.
* @param resource $handle the internal mssql handle that is points to the resultset.
*/
public function __construct(SQLServerConnector $connector, $handle)
{
$this->connector = $connector;
$this->handle = $handle;
}
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public function __destruct()
{
if (is_resource($this->handle)) {
sqlsrv_free_stmt($this->handle);
}
}
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public function seek($row)
{
if (!is_resource($this->handle)) {
return false;
}
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user_error('MSSQLQuery::seek() not supported in sqlsrv', E_USER_WARNING);
}
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public function numRecords()
{
if (!is_resource($this->handle)) {
return false;
}
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// WARNING: This will only work if the cursor type is scrollable!
if (function_exists('sqlsrv_num_rows')) {
return sqlsrv_num_rows($this->handle);
} else {
user_error('MSSQLQuery::numRecords() not supported in this version of sqlsrv', E_USER_WARNING);
}
}
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public function nextRecord()
{
if (!is_resource($this->handle)) {
return false;
}
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if ($data = sqlsrv_fetch_array($this->handle, SQLSRV_FETCH_ASSOC)) {
// special case for sqlsrv - date values are DateTime coming out of the sqlsrv drivers,
// so we convert to the usual Y-m-d H:i:s value!
foreach ($data as $name => $value) {
if ($value instanceof DateTime) {
$data[$name] = $value->format('Y-m-d H:i:s');
}
}
return $data;
} else {
// Free the handle if there are no more results - sqlsrv crashes if there are too many handles
sqlsrv_free_stmt($this->handle);
$this->handle = null;
}
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return false;
}
}