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array.h
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1 /*-------------------------------------------------------------------------
2  *
3  * array.h
4  * Declarations for Postgres arrays.
5  *
6  * A standard varlena array has the following internal structure:
7  * <vl_len_> - standard varlena header word
8  * <ndim> - number of dimensions of the array
9  * <dataoffset> - offset to stored data, or 0 if no nulls bitmap
10  * <elemtype> - element type OID
11  * <dimensions> - length of each array axis (C array of int)
12  * <lower bnds> - lower boundary of each dimension (C array of int)
13  * <null bitmap> - bitmap showing locations of nulls (OPTIONAL)
14  * <actual data> - whatever is the stored data
15  *
16  * The <dimensions> and <lower bnds> arrays each have ndim elements.
17  *
18  * The <null bitmap> may be omitted if the array contains no NULL elements.
19  * If it is absent, the <dataoffset> field is zero and the offset to the
20  * stored data must be computed on-the-fly. If the bitmap is present,
21  * <dataoffset> is nonzero and is equal to the offset from the array start
22  * to the first data element (including any alignment padding). The bitmap
23  * follows the same conventions as tuple null bitmaps, ie, a 1 indicates
24  * a non-null entry and the LSB of each bitmap byte is used first.
25  *
26  * The actual data starts on a MAXALIGN boundary. Individual items in the
27  * array are aligned as specified by the array element type. They are
28  * stored in row-major order (last subscript varies most rapidly).
29  *
30  * NOTE: it is important that array elements of toastable datatypes NOT be
31  * toasted, since the tupletoaster won't know they are there. (We could
32  * support compressed toasted items; only out-of-line items are dangerous.
33  * However, it seems preferable to store such items uncompressed and allow
34  * the toaster to compress the whole array as one input.)
35  *
36  *
37  * The OIDVECTOR and INT2VECTOR datatypes are storage-compatible with
38  * generic arrays, but they support only one-dimensional arrays with no
39  * nulls (and no null bitmap). They don't support being toasted, either.
40  *
41  * There are also some "fixed-length array" datatypes, such as NAME and
42  * POINT. These are simply a sequence of a fixed number of items each
43  * of a fixed-length datatype, with no overhead; the item size must be
44  * a multiple of its alignment requirement, because we do no padding.
45  * We support subscripting on these types, but array_in() and array_out()
46  * only work with varlena arrays.
47  *
48  * In addition, arrays are a major user of the "expanded object" TOAST
49  * infrastructure. This allows a varlena array to be converted to a
50  * separate representation that may include "deconstructed" Datum/isnull
51  * arrays holding the elements.
52  *
53  *
54  * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
55  * Portions Copyright (c) 1994, Regents of the University of California
56  *
57  * src/include/utils/array.h
58  *
59  *-------------------------------------------------------------------------
60  */
61 #ifndef ARRAY_H
62 #define ARRAY_H
63 
64 #include "fmgr.h"
65 #include "utils/expandeddatum.h"
66 
67 /* avoid including execnodes.h here */
68 struct ExprState;
69 struct ExprContext;
70 
71 
72 /*
73  * Maximum number of array subscripts (arbitrary limit)
74  */
75 #define MAXDIM 6
76 
77 /*
78  * Arrays are varlena objects, so must meet the varlena convention that
79  * the first int32 of the object contains the total object size in bytes.
80  * Be sure to use VARSIZE() and SET_VARSIZE() to access it, though!
81  *
82  * CAUTION: if you change the header for ordinary arrays you will also
83  * need to change the headers for oidvector and int2vector!
84  */
85 typedef struct ArrayType
86 {
87  int32 vl_len_; /* varlena header (do not touch directly!) */
88  int ndim; /* # of dimensions */
89  int32 dataoffset; /* offset to data, or 0 if no bitmap */
90  Oid elemtype; /* element type OID */
91 } ArrayType;
92 
93 /*
94  * An expanded array is contained within a private memory context (as
95  * all expanded objects must be) and has a control structure as below.
96  *
97  * The expanded array might contain a regular "flat" array if that was the
98  * original input and we've not modified it significantly. Otherwise, the
99  * contents are represented by Datum/isnull arrays plus dimensionality and
100  * type information. We could also have both forms, if we've deconstructed
101  * the original array for access purposes but not yet changed it. For pass-
102  * by-reference element types, the Datums would point into the flat array in
103  * this situation. Once we start modifying array elements, new pass-by-ref
104  * elements are separately palloc'd within the memory context.
105  */
106 #define EA_MAGIC 689375833 /* ID for debugging crosschecks */
107 
108 typedef struct ExpandedArrayHeader
109 {
110  /* Standard header for expanded objects */
112 
113  /* Magic value identifying an expanded array (for debugging only) */
114  int ea_magic;
115 
116  /* Dimensionality info (always valid) */
117  int ndims; /* # of dimensions */
118  int *dims; /* array dimensions */
119  int *lbound; /* index lower bounds for each dimension */
120 
121  /* Element type info (always valid) */
122  Oid element_type; /* element type OID */
123  int16 typlen; /* needed info about element datatype */
124  bool typbyval;
125  char typalign;
126 
127  /*
128  * If we have a Datum-array representation of the array, it's kept here;
129  * else dvalues/dnulls are NULL. The dvalues and dnulls arrays are always
130  * palloc'd within the object private context, but may change size from
131  * time to time. For pass-by-ref element types, dvalues entries might
132  * point either into the fstartptr..fendptr area, or to separately
133  * palloc'd chunks. Elements should always be fully detoasted, as they
134  * are in the standard flat representation.
135  *
136  * Even when dvalues is valid, dnulls can be NULL if there are no null
137  * elements.
138  */
139  Datum *dvalues; /* array of Datums */
140  bool *dnulls; /* array of is-null flags for Datums */
141  int dvalueslen; /* allocated length of above arrays */
142  int nelems; /* number of valid entries in above arrays */
143 
144  /*
145  * flat_size is the current space requirement for the flat equivalent of
146  * the expanded array, if known; otherwise it's 0. We store this to make
147  * consecutive calls of get_flat_size cheap.
148  */
150 
151  /*
152  * fvalue points to the flat representation if it is valid, else it is
153  * NULL. If we have or ever had a flat representation then
154  * fstartptr/fendptr point to the start and end+1 of its data area; this
155  * is so that we can tell which Datum pointers point into the flat
156  * representation rather than being pointers to separately palloc'd data.
157  */
158  ArrayType *fvalue; /* must be a fully detoasted array */
159  char *fstartptr; /* start of its data area */
160  char *fendptr; /* end+1 of its data area */
162 
163 /*
164  * Functions that can handle either a "flat" varlena array or an expanded
165  * array use this union to work with their input. Don't refer to "flt";
166  * instead, cast to ArrayType. This struct nominally requires 8-byte
167  * alignment on 64-bit, but it's often used for an ArrayType having 4-byte
168  * alignment. UBSan complains about referencing "flt" in such cases.
169  */
170 typedef union AnyArrayType
171 {
174 } AnyArrayType;
175 
176 /*
177  * working state for accumArrayResult() and friends
178  * note that the input must be scalars (legal array elements)
179  */
180 typedef struct ArrayBuildState
181 {
182  MemoryContext mcontext; /* where all the temp stuff is kept */
183  Datum *dvalues; /* array of accumulated Datums */
184  bool *dnulls; /* array of is-null flags for Datums */
185  int alen; /* allocated length of above arrays */
186  int nelems; /* number of valid entries in above arrays */
187  Oid element_type; /* data type of the Datums */
188  int16 typlen; /* needed info about datatype */
189  bool typbyval;
190  char typalign;
191  bool private_cxt; /* use private memory context */
193 
194 /*
195  * working state for accumArrayResultArr() and friends
196  * note that the input must be arrays, and the same array type is returned
197  */
198 typedef struct ArrayBuildStateArr
199 {
200  MemoryContext mcontext; /* where all the temp stuff is kept */
201  char *data; /* accumulated data */
202  bits8 *nullbitmap; /* bitmap of is-null flags, or NULL if none */
203  int abytes; /* allocated length of "data" */
204  int nbytes; /* number of bytes used so far */
205  int aitems; /* allocated length of bitmap (in elements) */
206  int nitems; /* total number of elements in result */
207  int ndims; /* current dimensions of result */
208  int dims[MAXDIM];
209  int lbs[MAXDIM];
210  Oid array_type; /* data type of the arrays */
211  Oid element_type; /* data type of the array elements */
212  bool private_cxt; /* use private memory context */
214 
215 /*
216  * working state for accumArrayResultAny() and friends
217  * these functions handle both cases
218  */
219 typedef struct ArrayBuildStateAny
220 {
221  /* Exactly one of these is not NULL: */
225 
226 /*
227  * structure to cache type metadata needed for array manipulation
228  */
229 typedef struct ArrayMetaState
230 {
233  bool typbyval;
234  char typalign;
235  char typdelim;
240 
241 /*
242  * private state needed by array_map (here because caller must provide it)
243  */
244 typedef struct ArrayMapState
245 {
248 } ArrayMapState;
249 
250 /* ArrayIteratorData is private in arrayfuncs.c */
252 
253 /* fmgr macros for regular varlena array objects */
254 #define DatumGetArrayTypeP(X) ((ArrayType *) PG_DETOAST_DATUM(X))
255 #define DatumGetArrayTypePCopy(X) ((ArrayType *) PG_DETOAST_DATUM_COPY(X))
256 #define PG_GETARG_ARRAYTYPE_P(n) DatumGetArrayTypeP(PG_GETARG_DATUM(n))
257 #define PG_GETARG_ARRAYTYPE_P_COPY(n) DatumGetArrayTypePCopy(PG_GETARG_DATUM(n))
258 #define PG_RETURN_ARRAYTYPE_P(x) PG_RETURN_POINTER(x)
259 
260 /* fmgr macros for expanded array objects */
261 #define PG_GETARG_EXPANDED_ARRAY(n) DatumGetExpandedArray(PG_GETARG_DATUM(n))
262 #define PG_GETARG_EXPANDED_ARRAYX(n, metacache) \
263  DatumGetExpandedArrayX(PG_GETARG_DATUM(n), metacache)
264 #define PG_RETURN_EXPANDED_ARRAY(x) PG_RETURN_DATUM(EOHPGetRWDatum(&(x)->hdr))
265 
266 /* fmgr macros for AnyArrayType (ie, get either varlena or expanded form) */
267 #define PG_GETARG_ANY_ARRAY_P(n) DatumGetAnyArrayP(PG_GETARG_DATUM(n))
268 
269 /*
270  * Access macros for varlena array header fields.
271  *
272  * ARR_DIMS returns a pointer to an array of array dimensions (number of
273  * elements along the various array axes).
274  *
275  * ARR_LBOUND returns a pointer to an array of array lower bounds.
276  *
277  * That is: if the third axis of an array has elements 5 through 8, then
278  * ARR_DIMS(a)[2] == 4 and ARR_LBOUND(a)[2] == 5.
279  *
280  * Unlike C, the default lower bound is 1.
281  */
282 #define ARR_SIZE(a) VARSIZE(a)
283 #define ARR_NDIM(a) ((a)->ndim)
284 #define ARR_HASNULL(a) ((a)->dataoffset != 0)
285 #define ARR_ELEMTYPE(a) ((a)->elemtype)
286 
287 #define ARR_DIMS(a) \
288  ((int *) (((char *) (a)) + sizeof(ArrayType)))
289 #define ARR_LBOUND(a) \
290  ((int *) (((char *) (a)) + sizeof(ArrayType) + \
291  sizeof(int) * ARR_NDIM(a)))
292 
293 #define ARR_NULLBITMAP(a) \
294  (ARR_HASNULL(a) ? \
295  (bits8 *) (((char *) (a)) + sizeof(ArrayType) + \
296  2 * sizeof(int) * ARR_NDIM(a)) \
297  : (bits8 *) NULL)
298 
299 /*
300  * The total array header size (in bytes) for an array with the specified
301  * number of dimensions and total number of items.
302  */
303 #define ARR_OVERHEAD_NONULLS(ndims) \
304  MAXALIGN(sizeof(ArrayType) + 2 * sizeof(int) * (ndims))
305 #define ARR_OVERHEAD_WITHNULLS(ndims, nitems) \
306  MAXALIGN(sizeof(ArrayType) + 2 * sizeof(int) * (ndims) + \
307  ((nitems) + 7) / 8)
308 
309 #define ARR_DATA_OFFSET(a) \
310  (ARR_HASNULL(a) ? (a)->dataoffset : ARR_OVERHEAD_NONULLS(ARR_NDIM(a)))
311 
312 /*
313  * Returns a pointer to the actual array data.
314  */
315 #define ARR_DATA_PTR(a) \
316  (((char *) (a)) + ARR_DATA_OFFSET(a))
317 
318 /*
319  * Macros for working with AnyArrayType inputs. Beware multiple references!
320  */
321 #define AARR_NDIM(a) \
322  (VARATT_IS_EXPANDED_HEADER(a) ? \
323  (a)->xpn.ndims : ARR_NDIM((ArrayType *) (a)))
324 #define AARR_HASNULL(a) \
325  (VARATT_IS_EXPANDED_HEADER(a) ? \
326  ((a)->xpn.dvalues != NULL ? (a)->xpn.dnulls != NULL : ARR_HASNULL((a)->xpn.fvalue)) : \
327  ARR_HASNULL((ArrayType *) (a)))
328 #define AARR_ELEMTYPE(a) \
329  (VARATT_IS_EXPANDED_HEADER(a) ? \
330  (a)->xpn.element_type : ARR_ELEMTYPE((ArrayType *) (a)))
331 #define AARR_DIMS(a) \
332  (VARATT_IS_EXPANDED_HEADER(a) ? \
333  (a)->xpn.dims : ARR_DIMS((ArrayType *) (a)))
334 #define AARR_LBOUND(a) \
335  (VARATT_IS_EXPANDED_HEADER(a) ? \
336  (a)->xpn.lbound : ARR_LBOUND((ArrayType *) (a)))
337 
338 
339 /*
340  * GUC parameter
341  */
342 extern bool Array_nulls;
343 
344 /*
345  * prototypes for functions defined in arrayfuncs.c
346  */
347 extern void CopyArrayEls(ArrayType *array,
348  Datum *values,
349  bool *nulls,
350  int nitems,
351  int typlen,
352  bool typbyval,
353  char typalign,
354  bool freedata);
355 
356 extern Datum array_get_element(Datum arraydatum, int nSubscripts, int *indx,
357  int arraytyplen, int elmlen, bool elmbyval, char elmalign,
358  bool *isNull);
359 extern Datum array_set_element(Datum arraydatum, int nSubscripts, int *indx,
360  Datum dataValue, bool isNull,
361  int arraytyplen, int elmlen, bool elmbyval, char elmalign);
362 extern Datum array_get_slice(Datum arraydatum, int nSubscripts,
363  int *upperIndx, int *lowerIndx,
364  bool *upperProvided, bool *lowerProvided,
365  int arraytyplen, int elmlen, bool elmbyval, char elmalign);
366 extern Datum array_set_slice(Datum arraydatum, int nSubscripts,
367  int *upperIndx, int *lowerIndx,
368  bool *upperProvided, bool *lowerProvided,
369  Datum srcArrayDatum, bool isNull,
370  int arraytyplen, int elmlen, bool elmbyval, char elmalign);
371 
372 extern Datum array_ref(ArrayType *array, int nSubscripts, int *indx,
373  int arraytyplen, int elmlen, bool elmbyval, char elmalign,
374  bool *isNull);
375 extern ArrayType *array_set(ArrayType *array, int nSubscripts, int *indx,
376  Datum dataValue, bool isNull,
377  int arraytyplen, int elmlen, bool elmbyval, char elmalign);
378 
379 extern Datum array_map(Datum arrayd,
380  struct ExprState *exprstate, struct ExprContext *econtext,
381  Oid retType, ArrayMapState *amstate);
382 
383 extern void array_bitmap_copy(bits8 *destbitmap, int destoffset,
384  const bits8 *srcbitmap, int srcoffset,
385  int nitems);
386 
387 extern ArrayType *construct_array(Datum *elems, int nelems,
388  Oid elmtype,
389  int elmlen, bool elmbyval, char elmalign);
390 extern ArrayType *construct_md_array(Datum *elems,
391  bool *nulls,
392  int ndims,
393  int *dims,
394  int *lbs,
395  Oid elmtype, int elmlen, bool elmbyval, char elmalign);
396 extern ArrayType *construct_empty_array(Oid elmtype);
398  MemoryContext parentcontext,
399  ArrayMetaState *metacache);
400 extern void deconstruct_array(ArrayType *array,
401  Oid elmtype,
402  int elmlen, bool elmbyval, char elmalign,
403  Datum **elemsp, bool **nullsp, int *nelemsp);
404 extern bool array_contains_nulls(ArrayType *array);
405 
406 extern ArrayBuildState *initArrayResult(Oid element_type,
407  MemoryContext rcontext, bool subcontext);
409  Datum dvalue, bool disnull,
410  Oid element_type,
411  MemoryContext rcontext);
412 extern Datum makeArrayResult(ArrayBuildState *astate,
413  MemoryContext rcontext);
414 extern Datum makeMdArrayResult(ArrayBuildState *astate, int ndims,
415  int *dims, int *lbs, MemoryContext rcontext, bool release);
416 
417 extern ArrayBuildStateArr *initArrayResultArr(Oid array_type, Oid element_type,
418  MemoryContext rcontext, bool subcontext);
420  Datum dvalue, bool disnull,
421  Oid array_type,
422  MemoryContext rcontext);
424  MemoryContext rcontext, bool release);
425 
426 extern ArrayBuildStateAny *initArrayResultAny(Oid input_type,
427  MemoryContext rcontext, bool subcontext);
429  Datum dvalue, bool disnull,
430  Oid input_type,
431  MemoryContext rcontext);
433  MemoryContext rcontext, bool release);
434 
435 extern ArrayIterator array_create_iterator(ArrayType *arr, int slice_ndim, ArrayMetaState *mstate);
436 extern bool array_iterate(ArrayIterator iterator, Datum *value, bool *isnull);
437 extern void array_free_iterator(ArrayIterator iterator);
438 
439 /*
440  * prototypes for functions defined in arrayutils.c
441  */
442 
443 extern int ArrayGetOffset(int n, const int *dim, const int *lb, const int *indx);
444 extern int ArrayGetOffset0(int n, const int *tup, const int *scale);
445 extern int ArrayGetNItems(int ndim, const int *dims);
446 extern void mda_get_range(int n, int *span, const int *st, const int *endp);
447 extern void mda_get_prod(int n, const int *range, int *prod);
448 extern void mda_get_offset_values(int n, int *dist, const int *prod, const int *span);
449 extern int mda_next_tuple(int n, int *curr, const int *span);
450 extern int32 *ArrayGetIntegerTypmods(ArrayType *arr, int *n);
451 
452 /*
453  * prototypes for functions defined in array_expanded.c
454  */
455 extern Datum expand_array(Datum arraydatum, MemoryContext parentcontext,
456  ArrayMetaState *metacache);
459  ArrayMetaState *metacache);
462 
463 #endif /* ARRAY_H */
void mda_get_offset_values(int n, int *dist, const int *prod, const int *span)
Definition: arrayutils.c:150
signed short int16
Definition: c.h:416
void CopyArrayEls(ArrayType *array, Datum *values, bool *nulls, int nitems, int typlen, bool typbyval, char typalign, bool freedata)
Definition: arrayfuncs.c:958
Definition: fmgr.h:56
Datum array_get_slice(Datum arraydatum, int nSubscripts, int *upperIndx, int *lowerIndx, bool *upperProvided, bool *lowerProvided, int arraytyplen, int elmlen, bool elmbyval, char elmalign)
Definition: arrayfuncs.c:2051
ArrayType * construct_empty_array(Oid elmtype)
Definition: arrayfuncs.c:3437
ArrayBuildStateAny * accumArrayResultAny(ArrayBuildStateAny *astate, Datum dvalue, bool disnull, Oid input_type, MemoryContext rcontext)
Definition: arrayfuncs.c:5552
Datum array_set_slice(Datum arraydatum, int nSubscripts, int *upperIndx, int *lowerIndx, bool *upperProvided, bool *lowerProvided, Datum srcArrayDatum, bool isNull, int arraytyplen, int elmlen, bool elmbyval, char elmalign)
Definition: arrayfuncs.c:2786
Datum array_map(Datum arrayd, struct ExprState *exprstate, struct ExprContext *econtext, Oid retType, ArrayMapState *amstate)
Definition: arrayfuncs.c:3158
void mda_get_range(int n, int *span, const int *st, const int *endp)
Definition: arrayutils.c:120
Datum * dvalues
Definition: array.h:183
int32 dataoffset
Definition: array.h:89
int mda_next_tuple(int n, int *curr, const int *span)
Definition: arrayutils.c:175
static struct @144 value
struct ArrayMetaState ArrayMetaState
AnyArrayType * DatumGetAnyArrayP(Datum d)
bool typbyval
Definition: array.h:189
ExpandedArrayHeader xpn
Definition: array.h:173
Oid element_type
Definition: array.h:187
bool private_cxt
Definition: array.h:191
int scale
Definition: pgbench.c:154
ArrayBuildState * initArrayResult(Oid element_type, MemoryContext rcontext, bool subcontext)
Definition: arrayfuncs.c:5046
bool array_contains_nulls(ArrayType *array)
Definition: arrayfuncs.c:3555
Datum * dvalues
Definition: array.h:139
Datum array_set_element(Datum arraydatum, int nSubscripts, int *indx, Datum dataValue, bool isNull, int arraytyplen, int elmlen, bool elmbyval, char elmalign)
Definition: arrayfuncs.c:2222
unsigned int Oid
Definition: postgres_ext.h:31
char * fendptr
Definition: array.h:160
ArrayBuildState * scalarstate
Definition: array.h:222
Datum expand_array(Datum arraydatum, MemoryContext parentcontext, ArrayMetaState *metacache)
signed int int32
Definition: c.h:417
Datum makeArrayResultAny(ArrayBuildStateAny *astate, MemoryContext rcontext, bool release)
Definition: arrayfuncs.c:5580
bool * dnulls
Definition: array.h:184
union AnyArrayType AnyArrayType
bool typbyval
Definition: array.h:233
bits8 * nullbitmap
Definition: array.h:202
ArrayBuildState * accumArrayResult(ArrayBuildState *astate, Datum dvalue, bool disnull, Oid element_type, MemoryContext rcontext)
Definition: arrayfuncs.c:5085
char typalign
Definition: pg_type.h:176
Datum makeArrayResultArr(ArrayBuildStateArr *astate, MemoryContext rcontext, bool release)
Definition: arrayfuncs.c:5432
ExpandedObjectHeader hdr
Definition: array.h:111
Oid elemtype
Definition: array.h:90
int ArrayGetOffset0(int n, const int *tup, const int *scale)
Definition: arrayutils.c:50
ExpandedArrayHeader * DatumGetExpandedArrayX(Datum d, ArrayMetaState *metacache)
ArrayMetaState inp_extra
Definition: array.h:246
char typalign
Definition: array.h:190
struct ArrayMapState ArrayMapState
int16 typlen
Definition: array.h:232
struct ArrayIteratorData * ArrayIterator
Definition: array.h:251
char typdelim
Definition: array.h:235
#define MAXDIM
Definition: array.h:75
ArrayBuildStateArr * initArrayResultArr(Oid array_type, Oid element_type, MemoryContext rcontext, bool subcontext)
Definition: arrayfuncs.c:5233
ArrayIterator array_create_iterator(ArrayType *arr, int slice_ndim, ArrayMetaState *mstate)
Definition: arrayfuncs.c:4350
Datum array_ref(ArrayType *array, int nSubscripts, int *indx, int arraytyplen, int elmlen, bool elmbyval, char elmalign, bool *isNull)
Definition: arrayfuncs.c:3103
Datum makeMdArrayResult(ArrayBuildState *astate, int ndims, int *dims, int *lbs, MemoryContext rcontext, bool release)
Definition: arrayfuncs.c:5181
struct ArrayType ArrayType
static struct cvec * range(struct vars *v, chr a, chr b, int cases)
Definition: regc_locale.c:416
int ArrayGetNItems(int ndim, const int *dims)
Definition: arrayutils.c:75
ExpandedArrayHeader * DatumGetExpandedArray(Datum d)
ArrayType * construct_md_array(Datum *elems, bool *nulls, int ndims, int *dims, int *lbs, Oid elmtype, int elmlen, bool elmbyval, char elmalign)
Definition: arrayfuncs.c:3353
Datum array_get_element(Datum arraydatum, int nSubscripts, int *indx, int arraytyplen, int elmlen, bool elmbyval, char elmalign, bool *isNull)
Definition: arrayfuncs.c:1841
ArrayType * fvalue
Definition: array.h:158
bool array_iterate(ArrayIterator iterator, Datum *value, bool *isnull)
Definition: arrayfuncs.c:4429
ArrayBuildStateArr * arraystate
Definition: array.h:223
uint8 bits8
Definition: c.h:436
Datum makeArrayResult(ArrayBuildState *astate, MemoryContext rcontext)
Definition: arrayfuncs.c:5149
ArrayBuildStateArr * accumArrayResultArr(ArrayBuildStateArr *astate, Datum dvalue, bool disnull, Oid array_type, MemoryContext rcontext)
Definition: arrayfuncs.c:5279
void array_free_iterator(ArrayIterator iterator)
Definition: arrayfuncs.c:4512
uintptr_t Datum
Definition: postgres.h:367
void mda_get_prod(int n, const int *range, int *prod)
Definition: arrayutils.c:134
struct ExpandedArrayHeader ExpandedArrayHeader
int ArrayGetOffset(int n, const int *dim, const int *lb, const int *indx)
Definition: arrayutils.c:31
ArrayType * construct_array(Datum *elems, int nelems, Oid elmtype, int elmlen, bool elmbyval, char elmalign)
Definition: arrayfuncs.c:3318
void array_bitmap_copy(bits8 *destbitmap, int destoffset, const bits8 *srcbitmap, int srcoffset, int nitems)
Definition: arrayfuncs.c:4719
Oid typioparam
Definition: array.h:236
struct ArrayBuildStateAny ArrayBuildStateAny
size_t Size
Definition: c.h:528
ArrayMetaState ret_extra
Definition: array.h:247
struct ArrayBuildStateArr ArrayBuildStateArr
Oid typiofunc
Definition: array.h:237
char typalign
Definition: array.h:234
MemoryContext mcontext
Definition: array.h:182
static Datum values[MAXATTR]
Definition: bootstrap.c:165
int32 * ArrayGetIntegerTypmods(ArrayType *arr, int *n)
Definition: arrayutils.c:200
ArrayType flt
Definition: array.h:172
int32 vl_len_
Definition: array.h:87
FmgrInfo proc
Definition: array.h:238
char * fstartptr
Definition: array.h:159
void deconstruct_array(ArrayType *array, Oid elmtype, int elmlen, bool elmbyval, char elmalign, Datum **elemsp, bool **nullsp, int *nelemsp)
Definition: arrayfuncs.c:3488
bool private_cxt
Definition: array.h:212
Oid element_type
Definition: array.h:231
ArrayType * array_set(ArrayType *array, int nSubscripts, int *indx, Datum dataValue, bool isNull, int arraytyplen, int elmlen, bool elmbyval, char elmalign)
Definition: arrayfuncs.c:3120
int16 typlen
Definition: array.h:188
void deconstruct_expanded_array(ExpandedArrayHeader *eah)
struct ArrayBuildState ArrayBuildState
bool Array_nulls
Definition: arrayfuncs.c:41
MemoryContext mcontext
Definition: array.h:200
int ndim
Definition: array.h:88
ArrayType * arr
Definition: arrayfuncs.c:71
ArrayBuildStateAny * initArrayResultAny(Oid input_type, MemoryContext rcontext, bool subcontext)
Definition: arrayfuncs.c:5507
ExpandedArrayHeader * construct_empty_expanded_array(Oid element_type, MemoryContext parentcontext, ArrayMetaState *metacache)
Definition: arrayfuncs.c:3454