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Modify array operations to include array's element type OID in the
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.
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@@ -8,7 +8,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/parser/parse_node.c,v 1.66 2002/06/20 20:29:33 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/parser/parse_node.c,v 1.67 2002/08/26 17:53:58 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@@ -343,11 +343,12 @@ transformArraySubscripts(ParseState *pstate,
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* Ready to build the ArrayRef node.
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*/
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aref = makeNode(ArrayRef);
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aref->refrestype = resultType; /* XXX should save element type
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* too */
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aref->refattrlength = type_struct_array->typlen;
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aref->refelemlength = type_struct_element->typlen;
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aref->refelemtype = resultType; /* XXX should save element type
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* too */
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aref->refelembyval = type_struct_element->typbyval;
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aref->refelemalign = type_struct_element->typalign;
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aref->refupperindexpr = upperIndexpr;
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aref->reflowerindexpr = lowerIndexpr;
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aref->refexpr = arrayBase;
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