pg_publication.h

Go to the documentation of this file.

/*-------------------------------------------------------------------------
 *
 * pg_publication.h
 *    definition of the "publication" system catalog (pg_publication)
 *
 * Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/catalog/pg_publication.h
 *
 * NOTES
 *    The Catalog.pm module reads this file and derives schema
 *    information.
 *
 *-------------------------------------------------------------------------
 */
#ifndef PG_PUBLICATION_H
#define PG_PUBLICATION_H
 
#include "catalog/genbki.h"
#include "catalog/objectaddress.h"
#include "catalog/pg_publication_d.h"   /* IWYU pragma: export */
 
/* ----------------
 *      pg_publication definition.  cpp turns this into
 *      typedef struct FormData_pg_publication
 * ----------------
 */
CATALOG(pg_publication,6104,PublicationRelationId)
{
    Oid         oid;            /* oid */
 
    NameData    pubname;        /* name of the publication */
 
    Oid         pubowner BKI_LOOKUP(pg_authid); /* publication owner */
 
    /*
     * indicates that this is special publication which should encompass all
     * tables in the database (except for the unlogged and temp ones)
     */
    bool        puballtables;
 
    /*
     * indicates that this is special publication which should encompass all
     * sequences in the database (except for the unlogged and temp ones)
     */
    bool        puballsequences;
 
    /* true if inserts are published */
    bool        pubinsert;
 
    /* true if updates are published */
    bool        pubupdate;
 
    /* true if deletes are published */
    bool        pubdelete;
 
    /* true if truncates are published */
    bool        pubtruncate;
 
    /* true if partition changes are published using root schema */
    bool        pubviaroot;
 
    /*
     * 'n'(none) if generated column data should not be published. 's'(stored)
     * if stored generated column data should be published.
     */
    char        pubgencols;
} FormData_pg_publication;
 
/* ----------------
 *      Form_pg_publication corresponds to a pointer to a tuple with
 *      the format of pg_publication relation.
 * ----------------
 */
typedef FormData_pg_publication *Form_pg_publication;
 
DECLARE_UNIQUE_INDEX_PKEY(pg_publication_oid_index, 6110, PublicationObjectIndexId, pg_publication, btree(oid oid_ops));
DECLARE_UNIQUE_INDEX(pg_publication_pubname_index, 6111, PublicationNameIndexId, pg_publication, btree(pubname name_ops));
 
MAKE_SYSCACHE(PUBLICATIONOID, pg_publication_oid_index, 8);
MAKE_SYSCACHE(PUBLICATIONNAME, pg_publication_pubname_index, 8);
 
typedef struct PublicationActions
{
    bool        pubinsert;
    bool        pubupdate;
    bool        pubdelete;
    bool        pubtruncate;
} PublicationActions;
 
typedef struct PublicationDesc
{
    PublicationActions pubactions;
 
    /*
     * true if the columns referenced in row filters which are used for UPDATE
     * or DELETE are part of the replica identity or the publication actions
     * do not include UPDATE or DELETE.
     */
    bool        rf_valid_for_update;
    bool        rf_valid_for_delete;
 
    /*
     * true if the columns are part of the replica identity or the publication
     * actions do not include UPDATE or DELETE.
     */
    bool        cols_valid_for_update;
    bool        cols_valid_for_delete;
 
    /*
     * true if all generated columns that are part of replica identity are
     * published or the publication actions do not include UPDATE or DELETE.
     */
    bool        gencols_valid_for_update;
    bool        gencols_valid_for_delete;
} PublicationDesc;
 
#ifdef EXPOSE_TO_CLIENT_CODE
 
typedef enum PublishGencolsType
{
    /* Generated columns present should not be replicated. */
    PUBLISH_GENCOLS_NONE = 'n',
 
    /* Generated columns present should be replicated. */
    PUBLISH_GENCOLS_STORED = 's',
 
} PublishGencolsType;
 
#endif                          /* EXPOSE_TO_CLIENT_CODE */
 
typedef struct Publication
{
    Oid         oid;
    char       *name;
    bool        alltables;
    bool        allsequences;
    bool        pubviaroot;
    PublishGencolsType pubgencols_type;
    PublicationActions pubactions;
} Publication;
 
typedef struct PublicationRelInfo
{
    Relation    relation;
    Node       *whereClause;
    List       *columns;
} PublicationRelInfo;
 
extern Publication *GetPublication(Oid pubid);
extern Publication *GetPublicationByName(const char *pubname, bool missing_ok);
extern List *GetRelationPublications(Oid relid);
 
/*---------
 * Expected values for pub_partopt parameter of GetPublicationRelations(),
 * which allows callers to specify which partitions of partitioned tables
 * mentioned in the publication they expect to see.
 *
 *  ROOT:   only the table explicitly mentioned in the publication
 *  LEAF:   only leaf partitions in given tree
 *  ALL:    all partitions in given tree
 */
typedef enum PublicationPartOpt
{
    PUBLICATION_PART_ROOT,
    PUBLICATION_PART_LEAF,
    PUBLICATION_PART_ALL,
} PublicationPartOpt;
 
extern List *GetPublicationRelations(Oid pubid, PublicationPartOpt pub_partopt);
extern List *GetAllTablesPublications(void);
extern List *GetAllPublicationRelations(char relkind, bool pubviaroot);
extern List *GetPublicationSchemas(Oid pubid);
extern List *GetSchemaPublications(Oid schemaid);
extern List *GetSchemaPublicationRelations(Oid schemaid,
                                           PublicationPartOpt pub_partopt);
extern List *GetAllSchemaPublicationRelations(Oid pubid,
                                              PublicationPartOpt pub_partopt);
extern List *GetPubPartitionOptionRelations(List *result,
                                            PublicationPartOpt pub_partopt,
                                            Oid relid);
extern Oid  GetTopMostAncestorInPublication(Oid puboid, List *ancestors,
                                            int *ancestor_level);
 
extern bool is_publishable_relation(Relation rel);
extern bool is_schema_publication(Oid pubid);
extern bool check_and_fetch_column_list(Publication *pub, Oid relid,
                                        MemoryContext mcxt, Bitmapset **cols);
extern ObjectAddress publication_add_relation(Oid pubid, PublicationRelInfo *pri,
                                              bool if_not_exists);
extern Bitmapset *pub_collist_validate(Relation targetrel, List *columns);
extern ObjectAddress publication_add_schema(Oid pubid, Oid schemaid,
                                            bool if_not_exists);
 
extern Bitmapset *pub_collist_to_bitmapset(Bitmapset *columns, Datum pubcols,
                                           MemoryContext mcxt);
extern Bitmapset *pub_form_cols_map(Relation relation,
                                    PublishGencolsType include_gencols_type);
 
#endif                          /* PG_PUBLICATION_H */