greenplumn prs2lock 源码
greenplumn prs2lock 代码
文件路径：/src/include/rewrite/prs2lock.h
/*-------------------------------------------------------------------------
*
* prs2lock.h
* data structures for POSTGRES Rule System II (rewrite rules only)
*
* Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/rewrite/prs2lock.h
*
*-------------------------------------------------------------------------
*/
#ifndef PRS2LOCK_H
#define PRS2LOCK_H
#include "access/attnum.h"
#include "nodes/pg_list.h"
/*
* RewriteRule -
* holds an info for a rewrite rule
*
*/
typedef struct RewriteRule
{
Oid ruleId;
CmdType event;
Node *qual;
List *actions;
char enabled;
bool isInstead;
} RewriteRule;
/*
* RuleLock -
* all rules that apply to a particular relation. Even though we only
* have the rewrite rule system left and these are not really "locks",
* the name is kept for historical reasons.
*/
typedef struct RuleLock
{
int numLocks;
RewriteRule **rules;
} RuleLock;
#endif /* REWRITE_H */
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