parse_tree_window.h

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#ifndef SQL_PARSE_TREE_WINDOW_INCLUDED
#define SQL_PARSE_TREE_WINDOW_INCLUDED
 
#include "sql/parse_tree_node_base.h"
#include "sql/sql_list.h"
#include "sql/window.h"
 
class Item_string;
class PT_frame;
class PT_order_list;
 
/**
  Parse tree node for a window; just a shallow wrapper for
  class Window, q.v.
*/
class PT_window : public Parse_tree_node, public Window {
  typedef Parse_tree_node super;
 
 public:
  PT_window(const POS &pos, PT_order_list *partition_by,
            PT_order_list *order_by, PT_frame *frame)
      : super(pos), Window(partition_by, order_by, frame) {}
 
  PT_window(const POS &pos, PT_order_list *partition_by,
            PT_order_list *order_by, PT_frame *frame, Item_string *inherit)
      : super(pos), Window(partition_by, order_by, frame, inherit) {}
 
  PT_window(const POS &pos, Item_string *name) : super(pos), Window(name) {}
 
  bool do_contextualize(Parse_context *pc) override;
 
 protected:
  void add_json_info(Json_object *obj) override;
};
 
/**
  Parse tree node for a list of window definitions corresponding
  to a <window clause> in SQL 2003.
*/
class PT_window_list : public Parse_tree_node {
  typedef Parse_tree_node super;
  List<Window> m_windows;
 
 public:
  explicit PT_window_list(const POS &pos) : super(pos) {}
 
  bool do_contextualize(Parse_context *pc) override;
 
  bool push_back(PT_window *w) { return m_windows.push_back(w); }
};
 
#endif  // SQL_PARSE_TREE_WINDOW_INCLUDED