diff options
Diffstat (limited to 'src/include/utils/lsyscache.h')
| -rw-r--r-- | src/include/utils/lsyscache.h | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/src/include/utils/lsyscache.h b/src/include/utils/lsyscache.h new file mode 100644 index 0000000..ee35686 --- /dev/null +++ b/src/include/utils/lsyscache.h @@ -0,0 +1,198 @@ +/*------------------------------------------------------------------------- + * + * lsyscache.h + * Convenience routines for common queries in the system catalog cache. + * + * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * src/include/utils/lsyscache.h + * + *------------------------------------------------------------------------- + */ +#ifndef LSYSCACHE_H +#define LSYSCACHE_H + +#include "access/attnum.h" +#include "access/htup.h" +#include "nodes/pg_list.h" + +/* Result list element for get_op_btree_interpretation */ +typedef struct OpBtreeInterpretation +{ + Oid opfamily_id; /* btree opfamily containing operator */ + int strategy; /* its strategy number */ + Oid oplefttype; /* declared left input datatype */ + Oid oprighttype; /* declared right input datatype */ +} OpBtreeInterpretation; + +/* I/O function selector for get_type_io_data */ +typedef enum IOFuncSelector +{ + IOFunc_input, + IOFunc_output, + IOFunc_receive, + IOFunc_send +} IOFuncSelector; + +/* Flag bits for get_attstatsslot */ +#define ATTSTATSSLOT_VALUES 0x01 +#define ATTSTATSSLOT_NUMBERS 0x02 + +/* Result struct for get_attstatsslot */ +typedef struct AttStatsSlot +{ + /* Always filled: */ + Oid staop; /* Actual staop for the found slot */ + Oid stacoll; /* Actual collation for the found slot */ + /* Filled if ATTSTATSSLOT_VALUES is specified: */ + Oid valuetype; /* Actual datatype of the values */ + Datum *values; /* slot's "values" array, or NULL if none */ + int nvalues; /* length of values[], or 0 */ + /* Filled if ATTSTATSSLOT_NUMBERS is specified: */ + float4 *numbers; /* slot's "numbers" array, or NULL if none */ + int nnumbers; /* length of numbers[], or 0 */ + + /* Remaining fields are private to get_attstatsslot/free_attstatsslot */ + void *values_arr; /* palloc'd values array, if any */ + void *numbers_arr; /* palloc'd numbers array, if any */ +} AttStatsSlot; + +/* Hook for plugins to get control in get_attavgwidth() */ +typedef int32 (*get_attavgwidth_hook_type) (Oid relid, AttrNumber attnum); +extern PGDLLIMPORT get_attavgwidth_hook_type get_attavgwidth_hook; + +extern bool op_in_opfamily(Oid opno, Oid opfamily); +extern int get_op_opfamily_strategy(Oid opno, Oid opfamily); +extern Oid get_op_opfamily_sortfamily(Oid opno, Oid opfamily); +extern void get_op_opfamily_properties(Oid opno, Oid opfamily, bool ordering_op, + int *strategy, + Oid *lefttype, + Oid *righttype); +extern Oid get_opfamily_member(Oid opfamily, Oid lefttype, Oid righttype, + int16 strategy); +extern bool get_ordering_op_properties(Oid opno, + Oid *opfamily, Oid *opcintype, int16 *strategy); +extern Oid get_equality_op_for_ordering_op(Oid opno, bool *reverse); +extern Oid get_ordering_op_for_equality_op(Oid opno, bool use_lhs_type); +extern List *get_mergejoin_opfamilies(Oid opno); +extern bool get_compatible_hash_operators(Oid opno, + Oid *lhs_opno, Oid *rhs_opno); +extern bool get_op_hash_functions(Oid opno, + RegProcedure *lhs_procno, RegProcedure *rhs_procno); +extern List *get_op_btree_interpretation(Oid opno); +extern bool equality_ops_are_compatible(Oid opno1, Oid opno2); +extern bool comparison_ops_are_compatible(Oid opno1, Oid opno2); +extern Oid get_opfamily_proc(Oid opfamily, Oid lefttype, Oid righttype, + int16 procnum); +extern char *get_attname(Oid relid, AttrNumber attnum, bool missing_ok); +extern AttrNumber get_attnum(Oid relid, const char *attname); +extern int get_attstattarget(Oid relid, AttrNumber attnum); +extern char get_attgenerated(Oid relid, AttrNumber attnum); +extern Oid get_atttype(Oid relid, AttrNumber attnum); +extern void get_atttypetypmodcoll(Oid relid, AttrNumber attnum, + Oid *typid, int32 *typmod, Oid *collid); +extern Datum get_attoptions(Oid relid, int16 attnum); +extern Oid get_cast_oid(Oid sourcetypeid, Oid targettypeid, bool missing_ok); +extern char *get_collation_name(Oid colloid); +extern bool get_collation_isdeterministic(Oid colloid); +extern char *get_constraint_name(Oid conoid); +extern char *get_language_name(Oid langoid, bool missing_ok); +extern Oid get_opclass_family(Oid opclass); +extern Oid get_opclass_input_type(Oid opclass); +extern bool get_opclass_opfamily_and_input_type(Oid opclass, + Oid *opfamily, Oid *opcintype); +extern RegProcedure get_opcode(Oid opno); +extern char *get_opname(Oid opno); +extern Oid get_op_rettype(Oid opno); +extern void op_input_types(Oid opno, Oid *lefttype, Oid *righttype); +extern bool op_mergejoinable(Oid opno, Oid inputtype); +extern bool op_hashjoinable(Oid opno, Oid inputtype); +extern bool op_strict(Oid opno); +extern char op_volatile(Oid opno); +extern Oid get_commutator(Oid opno); +extern Oid get_negator(Oid opno); +extern RegProcedure get_oprrest(Oid opno); +extern RegProcedure get_oprjoin(Oid opno); +extern char *get_func_name(Oid funcid); +extern Oid get_func_namespace(Oid funcid); +extern Oid get_func_rettype(Oid funcid); +extern int get_func_nargs(Oid funcid); +extern Oid get_func_signature(Oid funcid, Oid **argtypes, int *nargs); +extern Oid get_func_variadictype(Oid funcid); +extern bool get_func_retset(Oid funcid); +extern bool func_strict(Oid funcid); +extern char func_volatile(Oid funcid); +extern char func_parallel(Oid funcid); +extern char get_func_prokind(Oid funcid); +extern bool get_func_leakproof(Oid funcid); +extern RegProcedure get_func_support(Oid funcid); +extern Oid get_relname_relid(const char *relname, Oid relnamespace); +extern char *get_rel_name(Oid relid); +extern Oid get_rel_namespace(Oid relid); +extern Oid get_rel_type_id(Oid relid); +extern char get_rel_relkind(Oid relid); +extern bool get_rel_relispartition(Oid relid); +extern Oid get_rel_tablespace(Oid relid); +extern char get_rel_persistence(Oid relid); +extern Oid get_transform_fromsql(Oid typid, Oid langid, List *trftypes); +extern Oid get_transform_tosql(Oid typid, Oid langid, List *trftypes); +extern bool get_typisdefined(Oid typid); +extern int16 get_typlen(Oid typid); +extern bool get_typbyval(Oid typid); +extern void get_typlenbyval(Oid typid, int16 *typlen, bool *typbyval); +extern void get_typlenbyvalalign(Oid typid, int16 *typlen, bool *typbyval, + char *typalign); +extern Oid getTypeIOParam(HeapTuple typeTuple); +extern void get_type_io_data(Oid typid, + IOFuncSelector which_func, + int16 *typlen, + bool *typbyval, + char *typalign, + char *typdelim, + Oid *typioparam, + Oid *func); +extern char get_typstorage(Oid typid); +extern Node *get_typdefault(Oid typid); +extern char get_typtype(Oid typid); +extern bool type_is_rowtype(Oid typid); +extern bool type_is_enum(Oid typid); +extern bool type_is_range(Oid typid); +extern void get_type_category_preferred(Oid typid, + char *typcategory, + bool *typispreferred); +extern Oid get_typ_typrelid(Oid typid); +extern Oid get_element_type(Oid typid); +extern Oid get_array_type(Oid typid); +extern Oid get_promoted_array_type(Oid typid); +extern Oid get_base_element_type(Oid typid); +extern void getTypeInputInfo(Oid type, Oid *typInput, Oid *typIOParam); +extern void getTypeOutputInfo(Oid type, Oid *typOutput, bool *typIsVarlena); +extern void getTypeBinaryInputInfo(Oid type, Oid *typReceive, Oid *typIOParam); +extern void getTypeBinaryOutputInfo(Oid type, Oid *typSend, bool *typIsVarlena); +extern Oid get_typmodin(Oid typid); +extern Oid get_typcollation(Oid typid); +extern bool type_is_collatable(Oid typid); +extern Oid getBaseType(Oid typid); +extern Oid getBaseTypeAndTypmod(Oid typid, int32 *typmod); +extern int32 get_typavgwidth(Oid typid, int32 typmod); +extern int32 get_attavgwidth(Oid relid, AttrNumber attnum); +extern bool get_attstatsslot(AttStatsSlot *sslot, HeapTuple statstuple, + int reqkind, Oid reqop, int flags); +extern void free_attstatsslot(AttStatsSlot *sslot); +extern char *get_namespace_name(Oid nspid); +extern char *get_namespace_name_or_temp(Oid nspid); +extern Oid get_range_subtype(Oid rangeOid); +extern Oid get_range_collation(Oid rangeOid); +extern Oid get_index_column_opclass(Oid index_oid, int attno); +extern bool get_index_isreplident(Oid index_oid); +extern bool get_index_isvalid(Oid index_oid); +extern bool get_index_isclustered(Oid index_oid); + +#define type_is_array(typid) (get_element_type(typid) != InvalidOid) +/* type_is_array_domain accepts both plain arrays and domains over arrays */ +#define type_is_array_domain(typid) (get_base_element_type(typid) != InvalidOid) + +#define TypeIsToastable(typid) (get_typstorage(typid) != TYPSTORAGE_PLAIN) + +#endif /* LSYSCACHE_H */ |