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-rw-r--r--src/include/rewrite/prs2lock.h46
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diff --git a/src/include/rewrite/prs2lock.h b/src/include/rewrite/prs2lock.h
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+/*-------------------------------------------------------------------------
+ *
+ * prs2lock.h
+ * data structures for POSTGRES Rule System II (rewrite rules only)
+ *
+ * Portions Copyright (c) 1996-2021, 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 /* PRS2LOCK_H */