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This commit is contained in:
blue-lemon0104
46
db_include/rewrite/prs2lock.h
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46
db_include/rewrite/prs2lock.h
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/*-------------------------------------------------------------------------
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*
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* prs2lock.h
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* data structures for POSTGRES Rule System II (rewrite rules only)
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*
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* Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/rewrite/prs2lock.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PRS2LOCK_H
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#define PRS2LOCK_H
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#include "access/attnum.h"
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#include "nodes/pg_list.h"
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/*
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* RewriteRule -
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* holds an info for a rewrite rule
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*
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*/
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typedef struct RewriteRule
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{
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Oid ruleId;
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CmdType event;
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Node *qual;
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List *actions;
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char enabled;
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bool isInstead;
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} RewriteRule;
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/*
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* RuleLock -
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* all rules that apply to a particular relation. Even though we only
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* have the rewrite rule system left and these are not really "locks",
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* the name is kept for historical reasons.
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*/
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typedef struct RuleLock
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{
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int numLocks;
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RewriteRule **rules;
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} RuleLock;
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#endif /* PRS2LOCK_H */
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44
db_include/rewrite/rewriteDefine.h
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44
db_include/rewrite/rewriteDefine.h
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/*-------------------------------------------------------------------------
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*
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* rewriteDefine.h
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*
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*
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*
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* Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/rewrite/rewriteDefine.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef REWRITEDEFINE_H
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#define REWRITEDEFINE_H
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#include "catalog/objectaddress.h"
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#include "nodes/parsenodes.h"
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#include "utils/relcache.h"
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#define RULE_FIRES_ON_ORIGIN 'O'
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#define RULE_FIRES_ALWAYS 'A'
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#define RULE_FIRES_ON_REPLICA 'R'
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#define RULE_DISABLED 'D'
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extern ObjectAddress DefineRule(RuleStmt *stmt, const char *queryString);
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extern ObjectAddress DefineQueryRewrite(const char *rulename,
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Oid event_relid,
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Node *event_qual,
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CmdType event_type,
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bool is_instead,
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bool replace,
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List *action);
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extern ObjectAddress RenameRewriteRule(RangeVar *relation, const char *oldName,
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const char *newName);
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extern void setRuleCheckAsUser(Node *node, Oid userid);
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extern void EnableDisableRule(Relation rel, const char *rulename,
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char fires_when);
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#endif /* REWRITEDEFINE_H */
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38
db_include/rewrite/rewriteHandler.h
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38
db_include/rewrite/rewriteHandler.h
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/*-------------------------------------------------------------------------
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*
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* rewriteHandler.h
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* External interface to query rewriter.
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*
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*
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* Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/rewrite/rewriteHandler.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef REWRITEHANDLER_H
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#define REWRITEHANDLER_H
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#include "nodes/parsenodes.h"
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#include "utils/relcache.h"
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extern List *QueryRewrite(Query *parsetree);
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extern void AcquireRewriteLocks(Query *parsetree,
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bool forExecute,
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bool forUpdatePushedDown);
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extern Node *build_column_default(Relation rel, int attrno);
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extern void fill_extraUpdatedCols(RangeTblEntry *target_rte,
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Relation target_relation);
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extern Query *get_view_query(Relation view);
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extern const char *view_query_is_auto_updatable(Query *viewquery,
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bool check_cols);
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extern int relation_is_updatable(Oid reloid,
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List *outer_reloids,
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bool include_triggers,
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Bitmapset *include_cols);
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#endif /* REWRITEHANDLER_H */
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87
db_include/rewrite/rewriteManip.h
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87
db_include/rewrite/rewriteManip.h
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/*-------------------------------------------------------------------------
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*
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* rewriteManip.h
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* Querytree manipulation subroutines for query rewriter.
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*
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*
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* Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/rewrite/rewriteManip.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef REWRITEMANIP_H
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#define REWRITEMANIP_H
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#include "nodes/parsenodes.h"
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struct AttrMap; /* avoid including attmap.h here */
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typedef struct replace_rte_variables_context replace_rte_variables_context;
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typedef Node *(*replace_rte_variables_callback) (Var *var,
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replace_rte_variables_context *context);
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struct replace_rte_variables_context
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{
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replace_rte_variables_callback callback; /* callback function */
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void *callback_arg; /* context data for callback function */
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int target_varno; /* RTE index to search for */
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int sublevels_up; /* (current) nesting depth */
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bool inserted_sublink; /* have we inserted a SubLink? */
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};
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typedef enum ReplaceVarsNoMatchOption
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{
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REPLACEVARS_REPORT_ERROR, /* throw error if no match */
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REPLACEVARS_CHANGE_VARNO, /* change the Var's varno, nothing else */
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REPLACEVARS_SUBSTITUTE_NULL /* replace with a NULL Const */
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} ReplaceVarsNoMatchOption;
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extern void OffsetVarNodes(Node *node, int offset, int sublevels_up);
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extern void ChangeVarNodes(Node *node, int old_varno, int new_varno,
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int sublevels_up);
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extern void IncrementVarSublevelsUp(Node *node, int delta_sublevels_up,
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int min_sublevels_up);
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extern void IncrementVarSublevelsUp_rtable(List *rtable,
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int delta_sublevels_up, int min_sublevels_up);
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extern bool rangeTableEntry_used(Node *node, int rt_index,
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int sublevels_up);
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extern Query *getInsertSelectQuery(Query *parsetree, Query ***subquery_ptr);
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extern void AddQual(Query *parsetree, Node *qual);
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extern void AddInvertedQual(Query *parsetree, Node *qual);
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extern bool contain_aggs_of_level(Node *node, int levelsup);
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extern int locate_agg_of_level(Node *node, int levelsup);
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extern bool contain_windowfuncs(Node *node);
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extern int locate_windowfunc(Node *node);
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extern bool checkExprHasSubLink(Node *node);
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extern Node *replace_rte_variables(Node *node,
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int target_varno, int sublevels_up,
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replace_rte_variables_callback callback,
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void *callback_arg,
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bool *outer_hasSubLinks);
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extern Node *replace_rte_variables_mutator(Node *node,
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replace_rte_variables_context *context);
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extern Node *map_variable_attnos(Node *node,
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int target_varno, int sublevels_up,
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const struct AttrMap *attno_map,
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Oid to_rowtype, bool *found_whole_row);
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extern Node *ReplaceVarsFromTargetList(Node *node,
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int target_varno, int sublevels_up,
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RangeTblEntry *target_rte,
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List *targetlist,
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ReplaceVarsNoMatchOption nomatch_option,
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int nomatch_varno,
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bool *outer_hasSubLinks);
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#endif /* REWRITEMANIP_H */
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21
db_include/rewrite/rewriteRemove.h
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21
db_include/rewrite/rewriteRemove.h
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/*-------------------------------------------------------------------------
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*
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* rewriteRemove.h
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*
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*
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*
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* Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/rewrite/rewriteRemove.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef REWRITEREMOVE_H
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#define REWRITEREMOVE_H
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#include "nodes/parsenodes.h"
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extern void RemoveRewriteRuleById(Oid ruleOid);
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#endif /* REWRITEREMOVE_H */
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21
db_include/rewrite/rewriteSearchCycle.h
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21
db_include/rewrite/rewriteSearchCycle.h
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/*-------------------------------------------------------------------------
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*
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* rewriteSearchCycle.h
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* Support for rewriting SEARCH and CYCLE clauses.
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*
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*
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* Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/rewrite/rewriteSearchCycle.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef REWRITESEARCHCYCLE_H
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#define REWRITESEARCHCYCLE_H
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#include "nodes/parsenodes.h"
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extern CommonTableExpr *rewriteSearchAndCycle(CommonTableExpr *cte);
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#endif /* REWRITESEARCHCYCLE_H */
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26
db_include/rewrite/rewriteSupport.h
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26
db_include/rewrite/rewriteSupport.h
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/*-------------------------------------------------------------------------
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*
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* rewriteSupport.h
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*
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*
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*
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* Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/rewrite/rewriteSupport.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef REWRITESUPPORT_H
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#define REWRITESUPPORT_H
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/* The ON SELECT rule of a view is always named this: */
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#define ViewSelectRuleName "_RETURN"
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extern bool IsDefinedRewriteRule(Oid owningRel, const char *ruleName);
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extern void SetRelationRuleStatus(Oid relationId, bool relHasRules);
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extern Oid get_rewrite_oid(Oid relid, const char *rulename, bool missing_ok);
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#endif /* REWRITESUPPORT_H */
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49
db_include/rewrite/rowsecurity.h
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49
db_include/rewrite/rowsecurity.h
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/* -------------------------------------------------------------------------
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*
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* rowsecurity.h
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*
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* prototypes for rewrite/rowsecurity.c and the structures for managing
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* the row security policies for relations in relcache.
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*
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* Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* -------------------------------------------------------------------------
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*/
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#ifndef ROWSECURITY_H
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#define ROWSECURITY_H
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#include "nodes/parsenodes.h"
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#include "utils/array.h"
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#include "utils/relcache.h"
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typedef struct RowSecurityPolicy
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{
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char *policy_name; /* Name of the policy */
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char polcmd; /* Type of command policy is for */
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ArrayType *roles; /* Array of roles policy is for */
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bool permissive; /* restrictive or permissive policy */
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Expr *qual; /* Expression to filter rows */
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Expr *with_check_qual; /* Expression to limit rows allowed */
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bool hassublinks; /* If either expression has sublinks */
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} RowSecurityPolicy;
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typedef struct RowSecurityDesc
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{
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MemoryContext rscxt; /* row security memory context */
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List *policies; /* list of row security policies */
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} RowSecurityDesc;
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typedef List *(*row_security_policy_hook_type) (CmdType cmdtype,
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Relation relation);
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extern PGDLLIMPORT row_security_policy_hook_type row_security_policy_hook_permissive;
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extern PGDLLIMPORT row_security_policy_hook_type row_security_policy_hook_restrictive;
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extern void get_row_security_policies(Query *root,
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RangeTblEntry *rte, int rt_index,
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List **securityQuals, List **withCheckOptions,
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bool *hasRowSecurity, bool *hasSubLinks);
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#endif /* ROWSECURITY_H */
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