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pg_am.h
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/*------------------------------------------------------------------------- * * pg_am.h * definition of the system "access method" relation (pg_am) * along with the relation's initial contents. * * * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * * src/include/catalog/pg_am.h * * NOTES * the genbki.pl script reads this file and generates .bki * information from the DATA() statements. * * XXX do NOT break up DATA() statements into multiple lines! * the scripts are not as smart as you might think... * *------------------------------------------------------------------------- */ #ifndef PG_AM_H #define PG_AM_H #include "catalog/genbki.h" /* ---------------- * pg_am definition. cpp turns this into * typedef struct FormData_pg_am * ---------------- */ #define AccessMethodRelationId 2601 CATALOG(pg_am,2601) { NameData amname; /* access method name */ int2 amstrategies; /* total number of strategies (operators) by * which we can traverse/search this AM. Zero * if AM does not have a fixed set of strategy * assignments. */ int2 amsupport; /* total number of support functions that this * AM uses */ bool amcanorder; /* does AM support order by column value? */ bool amcanorderbyop; /* does AM support order by operator result? */ bool amcanbackward; /* does AM support backward scan? */ bool amcanunique; /* does AM support UNIQUE indexes? */ bool amcanmulticol; /* does AM support multi-column indexes? */ bool amoptionalkey; /* can query omit key for the first column? */ bool amsearcharray; /* can AM handle ScalarArrayOpExpr quals? */ bool amsearchnulls; /* can AM search for NULL/NOT NULL entries? */ bool amstorage; /* can storage type differ from column type? */ bool amclusterable; /* does AM support cluster command? */ bool ampredlocks; /* does AM handle predicate locks? */ Oid amkeytype; /* type of data in index, or InvalidOid */ regproc aminsert; /* "insert this tuple" function */ regproc ambeginscan; /* "prepare for index scan" function */ regproc amgettuple; /* "next valid tuple" function, or 0 */ regproc amgetbitmap; /* "fetch all valid tuples" function, or 0 */ regproc amrescan; /* "(re)start index scan" function */ regproc amendscan; /* "end index scan" function */ regproc ammarkpos; /* "mark current scan position" function */ regproc amrestrpos; /* "restore marked scan position" function */ regproc ambuild; /* "build new index" function */ regproc ambuildempty; /* "build empty index" function */ regproc ambulkdelete; /* bulk-delete function */ regproc amvacuumcleanup; /* post-VACUUM cleanup function */ regproc amcanreturn; /* can indexscan return IndexTuples? */ regproc amcostestimate; /* estimate cost of an indexscan */ regproc amoptions; /* parse AM-specific parameters */ } FormData_pg_am; /* ---------------- * Form_pg_am corresponds to a pointer to a tuple with * the format of pg_am relation. * ---------------- */ typedef FormData_pg_am *Form_pg_am; /* ---------------- * compiler constants for pg_am * ---------------- */ #define Natts_pg_am 30 #define Anum_pg_am_amname 1 #define Anum_pg_am_amstrategies 2 #define Anum_pg_am_amsupport 3 #define Anum_pg_am_amcanorder 4 #define Anum_pg_am_amcanorderbyop 5 #define Anum_pg_am_amcanbackward 6 #define Anum_pg_am_amcanunique 7 #define Anum_pg_am_amcanmulticol 8 #define Anum_pg_am_amoptionalkey 9 #define Anum_pg_am_amsearcharray 10 #define Anum_pg_am_amsearchnulls 11 #define Anum_pg_am_amstorage 12 #define Anum_pg_am_amclusterable 13 #define Anum_pg_am_ampredlocks 14 #define Anum_pg_am_amkeytype 15 #define Anum_pg_am_aminsert 16 #define Anum_pg_am_ambeginscan 17 #define Anum_pg_am_amgettuple 18 #define Anum_pg_am_amgetbitmap 19 #define Anum_pg_am_amrescan 20 #define Anum_pg_am_amendscan 21 #define Anum_pg_am_ammarkpos 22 #define Anum_pg_am_amrestrpos 23 #define Anum_pg_am_ambuild 24 #define Anum_pg_am_ambuildempty 25 #define Anum_pg_am_ambulkdelete 26 #define Anum_pg_am_amvacuumcleanup 27 #define Anum_pg_am_amcanreturn 28 #define Anum_pg_am_amcostestimate 29 #define Anum_pg_am_amoptions 30 /* ---------------- * initial contents of pg_am * ---------------- */ DATA(insert OID = 403 ( btree 5 2 t f t t t t t t f t t 0 btinsert btbeginscan btgettuple btgetbitmap btrescan btendscan btmarkpos btrestrpos btbuild btbuildempty btbulkdelete btvacuumcleanup btcanreturn btcostestimate btoptions )); DESCR("b-tree index access method"); #define BTREE_AM_OID 403 DATA(insert OID = 405 ( hash 1 1 f f t f f f f f f f f 23 hashinsert hashbeginscan hashgettuple hashgetbitmap hashrescan hashendscan hashmarkpos hashrestrpos hashbuild hashbuildempty hashbulkdelete hashvacuumcleanup - hashcostestimate hashoptions )); DESCR("hash index access method"); #define HASH_AM_OID 405 DATA(insert OID = 783 ( gist 0 8 f t f f t t f t t t f 0 gistinsert gistbeginscan gistgettuple gistgetbitmap gistrescan gistendscan gistmarkpos gistrestrpos gistbuild gistbuildempty gistbulkdelete gistvacuumcleanup - gistcostestimate gistoptions )); DESCR("GiST index access method"); #define GIST_AM_OID 783 DATA(insert OID = 2742 ( gin 0 5 f f f f t t f f t f f 0 gininsert ginbeginscan - gingetbitmap ginrescan ginendscan ginmarkpos ginrestrpos ginbuild ginbuildempty ginbulkdelete ginvacuumcleanup - gincostestimate ginoptions )); DESCR("GIN index access method"); #define GIN_AM_OID 2742 DATA(insert OID = 4000 ( spgist 0 5 f f f f f t f t f f f 0 spginsert spgbeginscan spggettuple spggetbitmap spgrescan spgendscan spgmarkpos spgrestrpos spgbuild spgbuildempty spgbulkdelete spgvacuumcleanup spgcanreturn spgcostestimate spgoptions )); DESCR("SP-GiST index access method"); #define SPGIST_AM_OID 4000 #endif /* PG_AM_H */