1 /* 2 * contrib/btree_gist/btree_utils_var.h 3 */ 4 #ifndef __BTREE_UTILS_VAR_H__ 5 #define __BTREE_UTILS_VAR_H__ 6 7 #include "btree_gist.h" 8 9 #include "access/gist.h" 10 #include "mb/pg_wchar.h" 11 12 /* Variable length key */ 13 typedef bytea GBT_VARKEY; 14 15 /* Better readable key */ 16 typedef struct 17 { 18 bytea *lower, 19 *upper; 20 } GBT_VARKEY_R; 21 22 /* 23 * type description 24 */ 25 typedef struct 26 { 27 28 /* Attribs */ 29 30 enum gbtree_type t; /* data type */ 31 int32 eml; /* cached pg_database_encoding_max_length (0: 32 * undefined) */ 33 bool trnc; /* truncate (=compress) key */ 34 35 /* Methods */ 36 37 bool (*f_gt) (const void *, const void *, Oid, FmgrInfo *); /* greater than */ 38 bool (*f_ge) (const void *, const void *, Oid, FmgrInfo *); /* greater equal */ 39 bool (*f_eq) (const void *, const void *, Oid, FmgrInfo *); /* equal */ 40 bool (*f_le) (const void *, const void *, Oid, FmgrInfo *); /* less equal */ 41 bool (*f_lt) (const void *, const void *, Oid, FmgrInfo *); /* less than */ 42 int32 (*f_cmp) (const void *, const void *, Oid, FmgrInfo *); /* compare */ 43 GBT_VARKEY *(*f_l2n) (GBT_VARKEY *, FmgrInfo *flinfo); /* convert leaf to node */ 44 } gbtree_vinfo; 45 46 47 48 extern GBT_VARKEY_R gbt_var_key_readable(const GBT_VARKEY *k); 49 50 extern GBT_VARKEY *gbt_var_key_copy(const GBT_VARKEY_R *u); 51 52 extern GISTENTRY *gbt_var_compress(GISTENTRY *entry, const gbtree_vinfo *tinfo); 53 54 extern GBT_VARKEY *gbt_var_union(const GistEntryVector *entryvec, int32 *size, 55 Oid collation, const gbtree_vinfo *tinfo, FmgrInfo *flinfo); 56 57 extern bool gbt_var_same(Datum d1, Datum d2, Oid collation, 58 const gbtree_vinfo *tinfo, FmgrInfo *flinfo); 59 60 extern float *gbt_var_penalty(float *res, const GISTENTRY *o, const GISTENTRY *n, 61 Oid collation, const gbtree_vinfo *tinfo, FmgrInfo *flinfo); 62 63 extern bool gbt_var_consistent(GBT_VARKEY_R *key, const void *query, 64 StrategyNumber strategy, Oid collation, bool is_leaf, 65 const gbtree_vinfo *tinfo, FmgrInfo *flinfo); 66 67 extern GIST_SPLITVEC *gbt_var_picksplit(const GistEntryVector *entryvec, GIST_SPLITVEC *v, 68 Oid collation, const gbtree_vinfo *tinfo, FmgrInfo *flinfo); 69 70 extern void gbt_var_bin_union(Datum *u, GBT_VARKEY *e, Oid collation, 71 const gbtree_vinfo *tinfo, FmgrInfo *flinfo); 72 73 #endif 74