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Viewing changes to src/backend/utils/cache/lsyscache.c

  • Committer: Bazaar Package Importer
  • Author(s): Martin Pitt
  • Date: 2011-01-03 08:57:10 UTC
  • mfrom: (5.3.10 sid)
  • Revision ID: james.westby@ubuntu.com-20110103085710-v9u121v7u7oq8qca
Tags: 8.4.6-1~hardy1
Automated backport upload; no source changes.

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src/backend/utils/cache/lsyscache.c
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 * Portions Copyright (c) 1994, Regents of the University of California
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 *
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 * IDENTIFICATION
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 *        $PostgreSQL: pgsql/src/backend/utils/cache/lsyscache.c,v 1.162 2009/06/11 14:49:05 momjian Exp $
 
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 *        $PostgreSQL: pgsql/src/backend/utils/cache/lsyscache.c,v 1.162.2.1 2010/07/09 22:57:54 tgl Exp $
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 *
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 * NOTES
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 *        Eventually, the index information should go through here, too.
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 * If the attribute type is pass-by-reference, the values referenced by
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 * the values array are themselves palloc'd.  The palloc'd stuff can be
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 * freed by calling free_attstatsslot.
 
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 *
 
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 * Note: at present, atttype/atttypmod aren't actually used here at all.
 
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 * But the caller must have the correct (or at least binary-compatible)
 
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 * type ID to pass to free_attstatsslot later.
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 */
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bool
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get_attstatsslot(HeapTuple statstuple,
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        Datum           val;
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        bool            isnull;
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        ArrayType  *statarray;
 
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        Oid                     arrayelemtype;
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        int                     narrayelem;
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        HeapTuple       typeTuple;
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        Form_pg_type typeForm;
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                        elog(ERROR, "stavalues is null");
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                statarray = DatumGetArrayTypeP(val);
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                /* Need to get info about the array element type */
 
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                /*
 
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                 * Need to get info about the array element type.  We look at the
 
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                 * actual element type embedded in the array, which might be only
 
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                 * binary-compatible with the passed-in atttype.  The info we
 
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                 * extract here should be the same either way, but deconstruct_array
 
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                 * is picky about having an exact type OID match.
 
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                 */
 
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                arrayelemtype = ARR_ELEMTYPE(statarray);
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                typeTuple = SearchSysCache(TYPEOID,
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                                                                   ObjectIdGetDatum(atttype),
 
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                                                                   ObjectIdGetDatum(arrayelemtype),
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                                                                   0, 0, 0);
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                if (!HeapTupleIsValid(typeTuple))
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                        elog(ERROR, "cache lookup failed for type %u", atttype);
 
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                        elog(ERROR, "cache lookup failed for type %u", arrayelemtype);
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                typeForm = (Form_pg_type) GETSTRUCT(typeTuple);
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                /* Deconstruct array into Datum elements; NULLs not expected */
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                deconstruct_array(statarray,
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                                                  atttype,
 
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                                                  arrayelemtype,
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                                                  typeForm->typlen,
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                                                  typeForm->typbyval,
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                                                  typeForm->typalign,