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Modify array operations to include array's element type OID in the

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array header, and to compute sizing and alignment of array elements
the same way normal tuple access operations do --- viz, using the
tupmacs.h macros att_addlength and att_align.  This makes the world
safe for arrays of cstrings or intervals, and should make it much
easier to write array-type-polymorphic functions; as examples see
the cleanups of array_out and contrib/array_iterator.  By Joe Conway
and Tom Lane.
This commit is contained in:
Tom Lane
2002-08-26 17:54:02 +00:00
parent 8009c27592
commit 5cabcfccce
38 changed files with 559 additions and 435 deletions
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25
src/backend/executor/execQual.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/executor/execQual.c,v 1.100 2002/07/20 05:16:57 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/executor/execQual.c,v 1.101 2002/08/26 17:53:57 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -219,35 +219,38 @@ ExecEvalArrayRef(ArrayRef *arrayRef,
resultArray = array_set(array_source, i,
upper.indx,
sourceData,
arrayRef->refelembyval,
arrayRef->refelemlength,
arrayRef->refattrlength,
arrayRef->refelemlength,
arrayRef->refelembyval,
arrayRef->refelemalign,
isNull);
else
resultArray = array_set_slice(array_source, i,
upper.indx, lower.indx,
(ArrayType *) DatumGetPointer(sourceData),
arrayRef->refelembyval,
arrayRef->refelemlength,
arrayRef->refattrlength,
arrayRef->refelemlength,
arrayRef->refelembyval,
arrayRef->refelemalign,
isNull);
return PointerGetDatum(resultArray);
}
if (lIndex == NULL)
return array_ref(array_source, i,
upper.indx,
arrayRef->refelembyval,
arrayRef->refelemlength,
return array_ref(array_source, i, upper.indx,
arrayRef->refattrlength,
arrayRef->refelemlength,
arrayRef->refelembyval,
arrayRef->refelemalign,
isNull);
else
{
resultArray = array_get_slice(array_source, i,
upper.indx, lower.indx,
arrayRef->refelembyval,
arrayRef->refelemlength,
arrayRef->refattrlength,
arrayRef->refelemlength,
arrayRef->refelembyval,
arrayRef->refelemalign,
isNull);
return PointerGetDatum(resultArray);
}