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Green_GoodERP18_FSJ_Standard/PostgreSQL/include/server/utils/lsyscache.h

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  1. /*-------------------------------------------------------------------------

  2.  *

  3.  * lsyscache.h

  4.  *	  Convenience routines for common queries in the system catalog cache.

  5.  *

  6.  * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group

  7.  * Portions Copyright (c) 1994, Regents of the University of California

  8.  *

  9.  * src/include/utils/lsyscache.h

  10.  *

  11.  *-------------------------------------------------------------------------

  12.  */

  13. #ifndef LSYSCACHE_H

  14. #define LSYSCACHE_H

  15. 

  16. #include "access/attnum.h"

  17. #include "access/htup.h"

  18. #include "nodes/pg_list.h"

  19. 

  20. /* Result list element for get_op_btree_interpretation */

  21. typedef struct OpBtreeInterpretation

  22. {

  23. 	Oid			opfamily_id;	/* btree opfamily containing operator */

  24. 	int			strategy;		/* its strategy number */

  25. 	Oid			oplefttype;		/* declared left input datatype */

  26. 	Oid			oprighttype;	/* declared right input datatype */

  27. } OpBtreeInterpretation;

  28. 

  29. /* I/O function selector for get_type_io_data */

  30. typedef enum IOFuncSelector

  31. {

  32. 	IOFunc_input,

  33. 	IOFunc_output,

  34. 	IOFunc_receive,

  35. 	IOFunc_send

  36. } IOFuncSelector;

  37. 

  38. /* Flag bits for get_attstatsslot */

  39. #define ATTSTATSSLOT_VALUES		0x01

  40. #define ATTSTATSSLOT_NUMBERS	0x02

  41. 

  42. /* Result struct for get_attstatsslot */

  43. typedef struct AttStatsSlot

  44. {

  45. 	/* Always filled: */

  46. 	Oid			staop;			/* Actual staop for the found slot */

  47. 	Oid			stacoll;		/* Actual collation for the found slot */

  48. 	/* Filled if ATTSTATSSLOT_VALUES is specified: */

  49. 	Oid			valuetype;		/* Actual datatype of the values */

  50. 	Datum	   *values;			/* slot's "values" array, or NULL if none */

  51. 	int			nvalues;		/* length of values[], or 0 */

  52. 	/* Filled if ATTSTATSSLOT_NUMBERS is specified: */

  53. 	float4	   *numbers;		/* slot's "numbers" array, or NULL if none */

  54. 	int			nnumbers;		/* length of numbers[], or 0 */

  55. 

  56. 	/* Remaining fields are private to get_attstatsslot/free_attstatsslot */

  57. 	void	   *values_arr;		/* palloc'd values array, if any */

  58. 	void	   *numbers_arr;	/* palloc'd numbers array, if any */

  59. } AttStatsSlot;

  60. 

  61. /* Hook for plugins to get control in get_attavgwidth() */

  62. typedef int32 (*get_attavgwidth_hook_type) (Oid relid, AttrNumber attnum);

  63. extern PGDLLIMPORT get_attavgwidth_hook_type get_attavgwidth_hook;

  64. 

  65. extern bool op_in_opfamily(Oid opno, Oid opfamily);

  66. extern int	get_op_opfamily_strategy(Oid opno, Oid opfamily);

  67. extern Oid	get_op_opfamily_sortfamily(Oid opno, Oid opfamily);

  68. extern void get_op_opfamily_properties(Oid opno, Oid opfamily, bool ordering_op,

  69. 									   int *strategy,

  70. 									   Oid *lefttype,

  71. 									   Oid *righttype);

  72. extern Oid	get_opfamily_member(Oid opfamily, Oid lefttype, Oid righttype,

  73. 								int16 strategy);

  74. extern bool get_ordering_op_properties(Oid opno,

  75. 									   Oid *opfamily, Oid *opcintype, int16 *strategy);

  76. extern Oid	get_equality_op_for_ordering_op(Oid opno, bool *reverse);

  77. extern Oid	get_ordering_op_for_equality_op(Oid opno, bool use_lhs_type);

  78. extern List *get_mergejoin_opfamilies(Oid opno);

  79. extern bool get_compatible_hash_operators(Oid opno,

  80. 										  Oid *lhs_opno, Oid *rhs_opno);

  81. extern bool get_op_hash_functions(Oid opno,

  82. 								  RegProcedure *lhs_procno, RegProcedure *rhs_procno);

  83. extern List *get_op_btree_interpretation(Oid opno);

  84. extern bool equality_ops_are_compatible(Oid opno1, Oid opno2);

  85. extern Oid	get_opfamily_proc(Oid opfamily, Oid lefttype, Oid righttype,

  86. 							  int16 procnum);

  87. extern char *get_attname(Oid relid, AttrNumber attnum, bool missing_ok);

  88. extern AttrNumber get_attnum(Oid relid, const char *attname);

  89. extern char get_attgenerated(Oid relid, AttrNumber attnum);

  90. extern Oid	get_atttype(Oid relid, AttrNumber attnum);

  91. extern void get_atttypetypmodcoll(Oid relid, AttrNumber attnum,

  92. 								  Oid *typid, int32 *typmod, Oid *collid);

  93. extern char *get_collation_name(Oid colloid);

  94. extern bool get_collation_isdeterministic(Oid colloid);

  95. extern char *get_constraint_name(Oid conoid);

  96. extern char *get_language_name(Oid langoid, bool missing_ok);

  97. extern Oid	get_opclass_family(Oid opclass);

  98. extern Oid	get_opclass_input_type(Oid opclass);

  99. extern bool get_opclass_opfamily_and_input_type(Oid opclass,

  100. 												Oid *opfamily, Oid *opcintype);

  101. extern RegProcedure get_opcode(Oid opno);

  102. extern char *get_opname(Oid opno);

  103. extern Oid	get_op_rettype(Oid opno);

  104. extern void op_input_types(Oid opno, Oid *lefttype, Oid *righttype);

  105. extern bool op_mergejoinable(Oid opno, Oid inputtype);

  106. extern bool op_hashjoinable(Oid opno, Oid inputtype);

  107. extern bool op_strict(Oid opno);

  108. extern char op_volatile(Oid opno);

  109. extern Oid	get_commutator(Oid opno);

  110. extern Oid	get_negator(Oid opno);

  111. extern RegProcedure get_oprrest(Oid opno);

  112. extern RegProcedure get_oprjoin(Oid opno);

  113. extern char *get_func_name(Oid funcid);

  114. extern Oid	get_func_namespace(Oid funcid);

  115. extern Oid	get_func_rettype(Oid funcid);

  116. extern int	get_func_nargs(Oid funcid);

  117. extern Oid	get_func_signature(Oid funcid, Oid **argtypes, int *nargs);

  118. extern Oid	get_func_variadictype(Oid funcid);

  119. extern bool get_func_retset(Oid funcid);

  120. extern bool func_strict(Oid funcid);

  121. extern char func_volatile(Oid funcid);

  122. extern char func_parallel(Oid funcid);

  123. extern char get_func_prokind(Oid funcid);

  124. extern bool get_func_leakproof(Oid funcid);

  125. extern RegProcedure get_func_support(Oid funcid);

  126. extern Oid	get_relname_relid(const char *relname, Oid relnamespace);

  127. extern char *get_rel_name(Oid relid);

  128. extern Oid	get_rel_namespace(Oid relid);

  129. extern Oid	get_rel_type_id(Oid relid);

  130. extern char get_rel_relkind(Oid relid);

  131. extern bool get_rel_relispartition(Oid relid);

  132. extern Oid	get_rel_tablespace(Oid relid);

  133. extern char get_rel_persistence(Oid relid);

  134. extern Oid	get_transform_fromsql(Oid typid, Oid langid, List *trftypes);

  135. extern Oid	get_transform_tosql(Oid typid, Oid langid, List *trftypes);

  136. extern bool get_typisdefined(Oid typid);

  137. extern int16 get_typlen(Oid typid);

  138. extern bool get_typbyval(Oid typid);

  139. extern void get_typlenbyval(Oid typid, int16 *typlen, bool *typbyval);

  140. extern void get_typlenbyvalalign(Oid typid, int16 *typlen, bool *typbyval,

  141. 								 char *typalign);

  142. extern Oid	getTypeIOParam(HeapTuple typeTuple);

  143. extern void get_type_io_data(Oid typid,

  144. 							 IOFuncSelector which_func,

  145. 							 int16 *typlen,

  146. 							 bool *typbyval,

  147. 							 char *typalign,

  148. 							 char *typdelim,

  149. 							 Oid *typioparam,

  150. 							 Oid *func);

  151. extern char get_typstorage(Oid typid);

  152. extern Node *get_typdefault(Oid typid);

  153. extern char get_typtype(Oid typid);

  154. extern bool type_is_rowtype(Oid typid);

  155. extern bool type_is_enum(Oid typid);

  156. extern bool type_is_range(Oid typid);

  157. extern void get_type_category_preferred(Oid typid,

  158. 										char *typcategory,

  159. 										bool *typispreferred);

  160. extern Oid	get_typ_typrelid(Oid typid);

  161. extern Oid	get_element_type(Oid typid);

  162. extern Oid	get_array_type(Oid typid);

  163. extern Oid	get_promoted_array_type(Oid typid);

  164. extern Oid	get_base_element_type(Oid typid);

  165. extern void getTypeInputInfo(Oid type, Oid *typInput, Oid *typIOParam);

  166. extern void getTypeOutputInfo(Oid type, Oid *typOutput, bool *typIsVarlena);

  167. extern void getTypeBinaryInputInfo(Oid type, Oid *typReceive, Oid *typIOParam);

  168. extern void getTypeBinaryOutputInfo(Oid type, Oid *typSend, bool *typIsVarlena);

  169. extern Oid	get_typmodin(Oid typid);

  170. extern Oid	get_typcollation(Oid typid);

  171. extern bool type_is_collatable(Oid typid);

  172. extern Oid	getBaseType(Oid typid);

  173. extern Oid	getBaseTypeAndTypmod(Oid typid, int32 *typmod);

  174. extern int32 get_typavgwidth(Oid typid, int32 typmod);

  175. extern int32 get_attavgwidth(Oid relid, AttrNumber attnum);

  176. extern bool get_attstatsslot(AttStatsSlot *sslot, HeapTuple statstuple,

  177. 							 int reqkind, Oid reqop, int flags);

  178. extern void free_attstatsslot(AttStatsSlot *sslot);

  179. extern char *get_namespace_name(Oid nspid);

  180. extern char *get_namespace_name_or_temp(Oid nspid);

  181. extern Oid	get_range_subtype(Oid rangeOid);

  182. extern Oid	get_range_collation(Oid rangeOid);

  183. extern Oid	get_index_column_opclass(Oid index_oid, int attno);

  184. extern bool	get_index_isreplident(Oid index_oid);

  185. extern bool get_index_isvalid(Oid index_oid);

  186. extern bool get_index_isclustered(Oid index_oid);

  187. 

  188. #define type_is_array(typid)  (get_element_type(typid) != InvalidOid)

  189. /* type_is_array_domain accepts both plain arrays and domains over arrays */

  190. #define type_is_array_domain(typid)  (get_base_element_type(typid) != InvalidOid)

  191. 

  192. #define TypeIsToastable(typid)	(get_typstorage(typid) != 'p')

  193. 

  194. #endif							/* LSYSCACHE_H */
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