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Commitd0e17e2

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Arrays are toastable. (At least if you initdb, which I didn't force.)
Remove a bunch of crufty code for large-object-based arrays, which issuperseded by TOAST and likely hasn't worked in a long time anyway.Clean up array code a little, and in particular eliminate its habitof scribbling on the input array (ie, modifying the input tuple :-().
1 parentec37ea1 commitd0e17e2

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9 files changed

+463
-1726
lines changed

9 files changed

+463
-1726
lines changed

‎contrib/array/array_iterator.c‎

Lines changed: 6 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -47,15 +47,18 @@ array_iterator(Oid elemtype, Oid proc, int and, ArrayType *array, Datum value)
4747
FmgrInfofinfo;
4848

4949
/* Sanity checks */
50-
if ((array== (ArrayType*)NULL)
51-
|| (ARR_IS_LO(array)== true))
50+
if (array== (ArrayType*)NULL)
5251
{
5352
/* elog(NOTICE, "array_iterator: array is null"); */
5453
return (0);
5554
}
55+
56+
/* detoast input if necessary */
57+
array=DatumGetArrayTypeP(PointerGetDatum(array));
58+
5659
ndim=ARR_NDIM(array);
5760
dim=ARR_DIMS(array);
58-
nitems=getNitems(ndim,dim);
61+
nitems=ArrayGetNItems(ndim,dim);
5962
if (nitems==0)
6063
{
6164
/* elog(NOTICE, "array_iterator: nitems = 0"); */

‎src/backend/commands/define.c‎

Lines changed: 4 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -10,7 +10,7 @@
1010
*
1111
*
1212
* IDENTIFICATION
13-
* $Header: /cvsroot/pgsql/src/backend/commands/define.c,v 1.45 2000/07/17 03:04:44 tgl Exp $
13+
* $Header: /cvsroot/pgsql/src/backend/commands/define.c,v 1.46 2000/07/22 03:34:26 tgl Exp $
1414
*
1515
* DESCRIPTION
1616
* The "DefineFoo" routines take the parse tree and pick out the
@@ -691,10 +691,10 @@ DefineType(char *typeName, List *parameters)
691691
"array_in",/* receive procedure */
692692
"array_out",/* send procedure */
693693
typeName,/* element type name */
694-
defaultValue,/* default type value */
694+
NULL,/* never a default type value */
695695
false,/* never passed by value */
696-
alignment,
697-
'p');/* ARRAYdoesn't support TOAST yet */
696+
alignment,/* NB: must be 'i' or 'd' for arrays... */
697+
'x');/* ARRAYis always toastable */
698698

699699
pfree(shadow_type);
700700
}

‎src/backend/executor/execQual.c‎

Lines changed: 39 additions & 30 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $Header: /cvsroot/pgsql/src/backend/executor/execQual.c,v 1.74 2000/07/17 03:04:51 tgl Exp $
11+
* $Header: /cvsroot/pgsql/src/backend/executor/execQual.c,v 1.75 2000/07/22 03:34:27 tgl Exp $
1212
*
1313
*-------------------------------------------------------------------------
1414
*/
@@ -67,17 +67,24 @@ static Datum ExecMakeFunctionResult(Node *node, List *arguments,
6767
/*
6868
* ExecEvalArrayRef
6969
*
70-
* This function takes an ArrayRef and returns a Const Node if it
71-
* is an array reference or returns the changed Array Node if it is
72-
* an array assignment.
70+
* This function takes an ArrayRef and returns the extracted Datum
71+
* if it's a simple reference, or the modified array value if it's
72+
* an array assignment (read array element insertion).
73+
*
74+
* NOTE: we deliberately refrain from applying DatumGetArrayTypeP() here,
75+
* even though that might seem natural, because this code needs to support
76+
* both varlena arrays and fixed-length array types. DatumGetArrayTypeP()
77+
* only works for the varlena kind. The routines we call in arrayfuncs.c
78+
* have to know the difference (that's what they need refattrlength for).
7379
*/
7480
staticDatum
7581
ExecEvalArrayRef(ArrayRef*arrayRef,
7682
ExprContext*econtext,
7783
bool*isNull,
7884
bool*isDone)
7985
{
80-
ArrayType*array_scanner;
86+
ArrayType*array_source;
87+
ArrayType*resultArray;
8188
List*elt;
8289
inti=0,
8390
j=0;
@@ -90,7 +97,7 @@ ExecEvalArrayRef(ArrayRef *arrayRef,
9097

9198
if (arrayRef->refexpr!=NULL)
9299
{
93-
array_scanner= (ArrayType*)
100+
array_source= (ArrayType*)
94101
DatumGetPointer(ExecEvalExpr(arrayRef->refexpr,
95102
econtext,
96103
isNull,
@@ -110,7 +117,7 @@ ExecEvalArrayRef(ArrayRef *arrayRef,
110117
* the INSERT column list. This is a kluge, but it's not real
111118
* clear what the semantics ought to be...
112119
*/
113-
array_scanner=NULL;
120+
array_source=NULL;
114121
}
115122

116123
foreach(elt,arrayRef->refupperindexpr)
@@ -162,43 +169,45 @@ ExecEvalArrayRef(ArrayRef *arrayRef,
162169
if (*isNull)
163170
return (Datum)NULL;
164171

165-
if (array_scanner==NULL)
172+
if (array_source==NULL)
166173
returnsourceData;/* XXX do something else? */
167174

168-
/*
169-
* XXX shouldn't we copy the array value before modifying it??
170-
*
171-
* Or perhaps these array routines should deliver a modified copy
172-
* instead of changing the source in-place.
173-
*/
174175
if (lIndex==NULL)
175-
returnPointerGetDatum(array_set(array_scanner,i,
176-
upper.indx,
177-
sourceData,
178-
arrayRef->refelembyval,
179-
arrayRef->refelemlength,
180-
arrayRef->refattrlength,
181-
isNull));
182-
returnPointerGetDatum(array_assgn(array_scanner,i,
183-
upper.indx,lower.indx,
184-
(ArrayType*)DatumGetPointer(sourceData),
185-
arrayRef->refelembyval,
186-
arrayRef->refelemlength,
187-
isNull));
176+
resultArray=array_set(array_source,i,
177+
upper.indx,
178+
sourceData,
179+
arrayRef->refelembyval,
180+
arrayRef->refelemlength,
181+
arrayRef->refattrlength,
182+
isNull);
183+
else
184+
resultArray=array_set_slice(array_source,i,
185+
upper.indx,lower.indx,
186+
(ArrayType*)DatumGetPointer(sourceData),
187+
arrayRef->refelembyval,
188+
arrayRef->refelemlength,
189+
arrayRef->refattrlength,
190+
isNull);
191+
returnPointerGetDatum(resultArray);
188192
}
189193

190194
if (lIndex==NULL)
191-
returnarray_ref(array_scanner,i,
195+
returnarray_ref(array_source,i,
192196
upper.indx,
193197
arrayRef->refelembyval,
194198
arrayRef->refelemlength,
195199
arrayRef->refattrlength,
196200
isNull);
197-
returnPointerGetDatum(array_clip(array_scanner,i,
201+
else
202+
{
203+
resultArray=array_get_slice(array_source,i,
198204
upper.indx,lower.indx,
199205
arrayRef->refelembyval,
200206
arrayRef->refelemlength,
201-
isNull));
207+
arrayRef->refattrlength,
208+
isNull);
209+
returnPointerGetDatum(resultArray);
210+
}
202211
}
203212

204213

‎src/backend/utils/adt/Makefile‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
11
#
22
# Makefile for utils/adt
33
#
4-
# $Header: /cvsroot/pgsql/src/backend/utils/adt/Makefile,v 1.39 2000/07/13 16:07:14 petere Exp $
4+
# $Header: /cvsroot/pgsql/src/backend/utils/adt/Makefile,v 1.40 2000/07/22 03:34:43 tgl Exp $
55
#
66

77
subdir = src/backend/utils/adt
@@ -15,7 +15,7 @@ CFLAGS+= -mieee
1515
endif
1616
endif
1717

18-
OBJS = acl.o arrayfuncs.o arrayutils.o bool.o cash.o char.ochunk.o\
18+
OBJS = acl.o arrayfuncs.o arrayutils.o bool.o cash.o char.o\
1919
date.o datetime.o datum.o filename.o float.o format_type.o\
2020
geo_ops.o geo_selfuncs.o int.o int8.o like.o lztext.o\
2121
misc.o nabstime.o name.o not_in.o numeric.o numutils.o\

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