Sqlsrv.class.php
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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2014 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
namespace Think\Db\Driver;
use Think\Db\Driver;
use PDO;
/**
* Sqlsrv数据库驱动
*/
class Sqlsrv extends Driver
{
protected $selectSql = 'SELECT T1.* FROM (SELECT thinkphp.*, ROW_NUMBER() OVER (%ORDER%) AS ROW_NUMBER FROM (SELECT %DISTINCT% %FIELD% FROM %TABLE%%JOIN%%WHERE%%GROUP%%HAVING% %UNION%) AS thinkphp) AS T1 %LIMIT%%COMMENT%';
// PDO连接参数
protected $options = array(
PDO::ATTR_CASE => PDO::CASE_LOWER,
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
PDO::ATTR_STRINGIFY_FETCHES => false,
PDO::SQLSRV_ATTR_ENCODING => PDO::SQLSRV_ENCODING_UTF8
);
/**
* 解析pdo连接的dsn信息
*
* @access public
* @param array $config
* 连接信息
* @return string
*/
protected function parseDsn($config)
{
$dsn = 'sqlsrv:Database=' . $config['database'] . ';Server=' . $config['hostname'];
if (! empty($config['hostport'])) {
$dsn .= ',' . $config['hostport'];
}
return $dsn;
}
/**
* 取得数据表的字段信息
*
* @access public
* @return array
*/
public function getFields($tableName)
{
list ($tableName) = explode(' ', $tableName);
$result = $this->query("SELECT column_name, data_type, column_default, is_nullable
FROM information_schema.tables AS t
JOIN information_schema.columns AS c
ON t.table_catalog = c.table_catalog
AND t.table_schema = c.table_schema
AND t.table_name = c.table_name
WHERE t.table_name = '$tableName'");
$info = array();
if ($result) {
foreach ($result as $key => $val) {
$info[$val['column_name']] = array(
'name' => $val['column_name'],
'type' => $val['data_type'],
'notnull' => (bool) ($val['is_nullable'] === ''), // not null is empty, null is yes
'default' => $val['column_default'],
'primary' => false,
'autoinc' => false
);
}
}
return $info;
}
/**
* 取得数据表的字段信息
*
* @access public
* @return array
*/
public function getTables($dbName = '')
{
$result = $this->query("SELECT TABLE_NAME
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_TYPE = 'BASE TABLE'
");
$info = array();
foreach ($result as $key => $val) {
$info[$key] = current($val);
}
return $info;
}
/**
* order分析
*
* @access protected
* @param mixed $order
* @return string
*/
protected function parseOrder($order)
{
return ! empty($order) ? ' ORDER BY ' . $order : ' ORDER BY rand()';
}
/**
* 字段名分析
*
* @access protected
* @param string $key
* @return string
*/
protected function parseKey(&$key)
{
$key = trim($key);
if (! is_numeric($key) && ! preg_match('/[,\'\"\*\(\)\[.\s]/', $key)) {
$key = '[' . $key . ']';
}
return $key;
}
/**
* limit
*
* @access public
* @param mixed $limit
* @return string
*/
public function parseLimit($limit)
{
if (empty($limit)) {
return '';
}
$limit = explode(',', $limit);
if (count($limit) > 1) {
$limitStr = '(T1.ROW_NUMBER BETWEEN ' . $limit[0] . ' + 1 AND ' . $limit[0] . ' + ' . $limit[1] . ')';
} else {
$limitStr = '(T1.ROW_NUMBER BETWEEN 1 AND ' . $limit[0] . ")";
}
return 'WHERE ' . $limitStr;
}
/**
* 更新记录
*
* @access public
* @param mixed $data
* 数据
* @param array $options
* 表达式
* @return false | integer
*/
public function update($data, $options)
{
$this->model = $options['model'];
$this->parseBind(! empty($options['bind']) ? $options['bind'] : array());
$sql = 'UPDATE ' . $this->parseTable($options['table']) . $this->parseSet($data) . $this->parseWhere(! empty($options['where']) ? $options['where'] : '') . $this->parseLock(isset($options['lock']) ? $options['lock'] : false) . $this->parseComment(! empty($options['comment']) ? $options['comment'] : '');
return $this->execute($sql, ! empty($options['fetch_sql']) ? true : false);
}
/**
* 删除记录
*
* @access public
* @param array $options
* 表达式
* @return false | integer
*/
public function delete($options = array())
{
$this->model = $options['model'];
$this->parseBind(! empty($options['bind']) ? $options['bind'] : array());
$sql = 'DELETE FROM ' . $this->parseTable($options['table']) . $this->parseWhere(! empty($options['where']) ? $options['where'] : '') . $this->parseLock(isset($options['lock']) ? $options['lock'] : false) . $this->parseComment(! empty($options['comment']) ? $options['comment'] : '');
return $this->execute($sql, ! empty($options['fetch_sql']) ? true : false);
}
}