remove some unused files and methods

Author: basakest

.DS_Store

@@ -47,18 +47,18 @@ public function isFiltered(): bool
      */
     public function loadFilteredPolicy(Model $model, $filter): void
     {
-        // 如果$filter为空，就加载所有的策略
+        // if $filter is empty, load all policies
         if (is_null($filter)) {
             $this->loadPolicy($model);
             return;
         }
-        // 确保$filter的类型正确    
+        // validate $filter is a instance of Filter    
         if (!$filter instanceof Filter) {
             throw new InvalidFilterTypeException('invalid filter type');
         }
         $type = '';
         $filter = (array) $filter;
-        // 要判断ptype是p还是g
+        // choose which ptype to use
         foreach($filter as $i => $v) {
             if (!empty($v)) {
                 array_unshift($filter[$i], $i);
@@ -85,138 +85,4 @@ public function loadFilteredPolicy(Model $model, $filter): void
 
         $this->filtered = true;
     }
-
-    /**
-     * load filtered policy
-     * 通过拼接sql语句来实现过滤功能，但直接将字段的值进行了拼接，存在安全方面的问题，无法防止SQL注入等情况，应该用query方法的第二个参数来改写
-     *
-     * @param Model $model
-     * @param [type] $filter
-     * @return void
-     */
-    public function loadFilteredPolicy1(Model $model, $filter): void
-    {
-        // 如果$filter为空，就加载所有的策略
-        if (is_null($filter)) {
-            $this->loadPolicy($model);
-            return;
-        }
-        // 确保$filter的类型正确    
-        if (!$filter instanceof Filter) {
-            throw new InvalidFilterTypeException('invalid filter type');
-        }
-        $filter = (array) $filter;
-        // 要判断ptype是p还是g
-        foreach($filter as $i => $v) {
-            if (!empty($v)) {
-                array_unshift($filter[$i], $i);
-                break;
-            }
-        }
-        $sql = 'SELECT ptype, v0, v1, v2, v3, v4, v5 FROM '.$this->casbinRuleTableName . ' WHERE ';
-        $items = ['ptype', 'v0', 'v1', 'v2', 'v3', 'v4', 'v5'];
-        $temp = [];
-        foreach($items as $i => $item) {
-            if (isset($filter['p'][$i]) && !empty($filter['p'][$i])) {
-                array_push($temp, $item . '=' . '\'' . $filter['p'][$i] . '\'');
-            }
-        }
-        $sql .= implode(' and ', $temp);
-        $rows = $this->connection->query($sql);
-        foreach($rows as $row) {
-            $line = implode(', ', $row);
-            $this->loadPolicyLine($line, $model);
-        }
-        $this->filtered = true;
-    }
-
-    /**
-     * load filtered policy
-     * 仿照文件过滤适配器完成的，代码较多
-     *
-     * @param Model $model
-     * @param [type] $filter
-     * @return void
-     */
-    public function loadFilteredPolicy2(Model $model, $filter): void
-    {
-        // 如果$filter为空，就加载所有的策略
-        if (is_null($filter)) {
-            $this->loadPolicy($model);
-            return;
-        }
-        // 确保$filter的类型正确    
-        if (!$filter instanceof Filter) {
-            throw new InvalidFilterTypeException('invalid filter type');
-        }
-        $rows = $this->connection->query('SELECT ptype, v0, v1, v2, v3, v4, v5 FROM '.$this->casbinRuleTableName.'');
-        foreach($rows as $row) {
-            if (self::filterLine(array_values($row), $filter)) {
-                continue;
-            }
-            $line = implode(', ', $row);
-            //var_dump($line);continue;
-            $this->loadPolicyLine($line, $model);
-        }
-        $this->filtered = true;
-    }
-
-    /**
-     * FilterLine function.
-     *
-     * @param array $row
-     * @param Filter $filter
-     *
-     * @return bool
-     */
-    protected static function filterLine(array $row, Filter $filter): bool
-    {
-        if (0 == \count($row)) {
-            return true;
-        }
-
-        $filterSlice = [];
-        switch (trim($row[0])) {
-            case 'p':
-                $filterSlice = $filter->p;
-                // var_dump($filterSlice);exit;
-                break;
-            case 'g':
-                $filterSlice = $filter->g;
-
-                break;
-        }
-
-        return self::filterWords($row, $filterSlice);
-    }
-
-    /**
-     * FilterWords function.
-     *
-     * @param array $line ['p', 'alice', 'data1', 'read']
-     * @param array $filter ['alice']
-     *
-     * @return bool
-     */
-    protected static function filterWords(array $line, array $filter): bool
-    {
-        if (count($line) < count($filter) + 1) {
-            return true;
-        }
-        $skipLine = false;
-        // var_dump($filter);exit;
-        // $i从0开始，依次递增
-        // $filter中的第n个元素和$line中的第n+1个元素比较，不想等就跳过这一行（继续下一次循环，不会执行循环体下面的代码）
-        foreach ($filter as $i => $v) {
-            //var_dump($filter, $i, $v, $line[$i + 1]);exit;
-            if (strlen($v) > 0 && \trim($v) != trim($line[$i + 1])) {
-                $skipLine = true;
-
-                break;
-            }
-        }
-        // var_dump($line, $filter, $skipLine);
-        return $skipLine;
-    }
-
 }