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lsyscache.h
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/*------------------------------------------------------------------------- * * lsyscache.h * Convenience routines for common queries in the system catalog cache. * * Portions Copyright (c) 1996-2012, 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/htup.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; /* 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 bool get_sort_function_for_ordering_op(Oid opno, Oid *sortfunc, bool *issupport, bool *reverse); 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 Oid get_opfamily_proc(Oid opfamily, Oid lefttype, Oid righttype, int16 procnum); extern char *get_attname(Oid relid, AttrNumber attnum); extern char *get_relid_attribute_name(Oid relid, AttrNumber attnum); extern AttrNumber get_attnum(Oid relid, const char *attname); extern Oid get_atttype(Oid relid, AttrNumber attnum); extern int32 get_atttypmod(Oid relid, AttrNumber attnum); extern void get_atttypetypmodcoll(Oid relid, AttrNumber attnum, Oid *typid, int32 *typmod, Oid *collid); extern char *get_collation_name(Oid colloid); extern char *get_constraint_name(Oid conoid); extern Oid get_opclass_family(Oid opclass); extern Oid get_opclass_input_type(Oid opclass); extern RegProcedure get_opcode(Oid opno); extern char *get_opname(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 bool get_func_retset(Oid funcid); extern bool func_strict(Oid funcid); extern char func_volatile(Oid funcid); extern bool get_func_leakproof(Oid funcid); extern float4 get_func_cost(Oid funcid); extern float4 get_func_rows(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 Oid get_rel_tablespace(Oid relid); 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_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(HeapTuple statstuple, Oid atttype, int32 atttypmod, int reqkind, Oid reqop, Oid *actualop, Datum **values, int *nvalues, float4 **numbers, int *nnumbers); extern void free_attstatsslot(Oid atttype, Datum *values, int nvalues, float4 *numbers, int nnumbers); extern char *get_namespace_name(Oid nspid); extern Oid get_range_subtype(Oid rangeOid); #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) != 'p') #endif /* LSYSCACHE_H */