src/include/rewrite/rewriteHandler.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * rewriteHandler.h--
   4  *
   5  *
   6  *
   7  * Copyright (c) 1994, Regents of the University of California
   8  *
   9  * $Id: rewriteHandler.h,v 1.7 1999/01/18 00:10:12 momjian Exp $
  10  *
  11  *-------------------------------------------------------------------------
  12  */
  13 #ifndef REWRITEHANDLER_H
  14 #define REWRITEHANDLER_H
  15
  16 #include "nodes/nodes.h"
  17 #include "nodes/parsenodes.h"
  18
  19 struct _rewrite_meta_knowledge
  20 {
  21         List       *rt;
  22         int                     rt_index;
  23         bool            instead_flag;
  24         int                     event;
  25         CmdType         action;
  26         int                     current_varno;
  27         int                     new_varno;
  28         Query      *rule_action;
  29         Node       *rule_qual;
  30         bool            nothing;
  31 };
  32
  33 typedef struct _rewrite_meta_knowledge RewriteInfo;
  34
  35
  36 extern List *QueryRewrite(Query *parsetree);
  37 /***S*I***/
  38 extern Query *Except_Intersect_Rewrite(Query *parsetree);
  39 extern void create_list(Node *ptr, List **intersect_list);
  40 extern Node *intersect_tree_analyze(Node *tree, Node *first_select, Node *parsetree);
  41 extern void check_targetlists_are_compatible(List *prev_target, List *current_target);
  42 #endif   /* REWRITEHANDLER_H */