You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
176 lines
5.7 KiB
176 lines
5.7 KiB
<?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;
|
|
|
|
/**
|
|
* Firebird数据库驱动
|
|
*/
|
|
class Firebird extends Driver
|
|
{
|
|
protected $selectSql = 'SELECT %LIMIT% %DISTINCT% %FIELD% FROM %TABLE%%JOIN%%WHERE%%GROUP%%HAVING%%ORDER%';
|
|
|
|
/**
|
|
* 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 = 'firebird:dbname=' . $config['hostname'] . '/' . ($config['hostport'] ?: 3050) . ':' . $config['database'];
|
|
return $dsn;
|
|
}
|
|
|
|
/**
|
|
* 执行语句
|
|
* @access public
|
|
* @param string $str sql指令
|
|
* @param boolean $fetchSql 不执行只是获取SQL
|
|
* @return mixed
|
|
*/
|
|
public function execute($str, $fetchSql = false)
|
|
{
|
|
$this->initConnect(true);
|
|
if (!$this->_linkID) {
|
|
return false;
|
|
}
|
|
|
|
$this->queryStr = $str;
|
|
if (!empty($this->bind)) {
|
|
$that = $this;
|
|
$this->queryStr = strtr($this->queryStr, array_map(function ($val) use ($that) {return '\'' . $that->escapeString($val) . '\'';}, $this->bind));
|
|
}
|
|
if ($fetchSql) {
|
|
return $this->queryStr;
|
|
}
|
|
//释放前次的查询结果
|
|
if (!empty($this->PDOStatement)) {
|
|
$this->free();
|
|
}
|
|
|
|
$this->executeTimes++;
|
|
N('db_write', 1); // 兼容代码
|
|
// 记录开始执行时间
|
|
$this->debug(true);
|
|
$this->PDOStatement = $this->_linkID->prepare($str);
|
|
if (false === $this->PDOStatement) {
|
|
E($this->error());
|
|
}
|
|
foreach ($this->bind as $key => $val) {
|
|
if (is_array($val)) {
|
|
$this->PDOStatement->bindValue($key, $val[0], $val[1]);
|
|
} else {
|
|
$this->PDOStatement->bindValue($key, $val);
|
|
}
|
|
}
|
|
$this->bind = array();
|
|
$result = $this->PDOStatement->execute();
|
|
$this->debug(false);
|
|
if (false === $result) {
|
|
$this->error();
|
|
return false;
|
|
} else {
|
|
$this->numRows = $this->PDOStatement->rowCount();
|
|
return $this->numRows;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 取得数据表的字段信息
|
|
* @access public
|
|
*/
|
|
public function getFields($tableName)
|
|
{
|
|
$this->initConnect(true);
|
|
list($tableName) = explode(' ', $tableName);
|
|
$sql = 'SELECT RF.RDB$FIELD_NAME AS FIELD,RF.RDB$DEFAULT_VALUE AS DEFAULT1,RF.RDB$NULL_FLAG AS NULL1,TRIM(T.RDB$TYPE_NAME) || \'(\' || F.RDB$FIELD_LENGTH || \')\' as TYPE FROM RDB$RELATION_FIELDS RF LEFT JOIN RDB$FIELDS F ON (F.RDB$FIELD_NAME = RF.RDB$FIELD_SOURCE) LEFT JOIN RDB$TYPES T ON (T.RDB$TYPE = F.RDB$FIELD_TYPE) WHERE RDB$RELATION_NAME=UPPER(\'' . $tableName . '\') AND T.RDB$FIELD_NAME = \'RDB$FIELD_TYPE\' ORDER By RDB$FIELD_POSITION';
|
|
$result = $this->query($sql);
|
|
$info = array();
|
|
if ($result) {
|
|
foreach ($result as $key => $val) {
|
|
$info[trim($val['field'])] = array(
|
|
'name' => trim($val['field']),
|
|
'type' => $val['type'],
|
|
'notnull' => (bool) (1 == $val['null1']), // 1表示不为Null
|
|
'default' => $val['default1'],
|
|
'primary' => false,
|
|
'autoinc' => false,
|
|
);
|
|
}
|
|
}
|
|
//获取主键
|
|
$sql = 'select b.rdb$field_name as field_name from rdb$relation_constraints a join rdb$index_segments b on a.rdb$index_name=b.rdb$index_name where a.rdb$constraint_type=\'PRIMARY KEY\' and a.rdb$relation_name=UPPER(\'' . $tableName . '\')';
|
|
$rs_temp = $this->query($sql);
|
|
foreach ($rs_temp as $row) {
|
|
$info[trim($row['field_name'])]['primary'] = true;
|
|
}
|
|
return $info;
|
|
}
|
|
|
|
/**
|
|
* 取得数据库的表信息
|
|
* @access public
|
|
*/
|
|
public function getTables($dbName = '')
|
|
{
|
|
$sql = 'SELECT DISTINCT RDB$RELATION_NAME FROM RDB$RELATION_FIELDS WHERE RDB$SYSTEM_FLAG=0';
|
|
$result = $this->query($sql);
|
|
$info = array();
|
|
foreach ($result as $key => $val) {
|
|
$info[$key] = trim(current($val));
|
|
}
|
|
return $info;
|
|
}
|
|
|
|
/**
|
|
* SQL指令安全过滤
|
|
* @access public
|
|
* @param string $str SQL指令
|
|
* @return string
|
|
*/
|
|
public function escapeString($str)
|
|
{
|
|
return str_replace("'", "''", $str);
|
|
}
|
|
|
|
/**
|
|
* limit
|
|
* @access public
|
|
* @param $limit limit表达式
|
|
* @return string
|
|
*/
|
|
public function parseLimit($limit)
|
|
{
|
|
$limitStr = '';
|
|
if (!empty($limit)) {
|
|
$limit = explode(',', $limit);
|
|
if (count($limit) > 1) {
|
|
$limitStr = ' FIRST ' . $limit[1] . ' SKIP ' . $limit[0] . ' ';
|
|
} else {
|
|
$limitStr = ' FIRST ' . $limit[0] . ' ';
|
|
}
|
|
}
|
|
return $limitStr;
|
|
}
|
|
|
|
/**
|
|
* 随机排序
|
|
* @access protected
|
|
* @return string
|
|
*/
|
|
protected function parseRand()
|
|
{
|
|
return 'rand()';
|
|
}
|
|
|
|
}
|