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Tid access method feature from Hiroshi Inoue, Inoue@tpf.co.jp

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This commit is contained in:
Bruce Momjian
1999-11-23 20:07:06 +00:00
parent 54ffd4677a
commit 6f9ff92cc0
28 changed files with 1396 additions and 32 deletions
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33
src/include/nodes/execnodes.h
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@ -6,7 +6,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: execnodes.h,v 1.37 1999/10/17 22:15:07 tgl Exp $
* $Id: execnodes.h,v 1.38 1999/11/23 20:07:02 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -414,6 +414,37 @@ typedef struct IndexScanState
HeapTupleData iss_htup;
} IndexScanState;
/* ----------------
* TidScanState information
*
*| tid scans don't use CommonScanState because
*| the underlying AM abstractions for heap scans and
*| tid scans are too different.. It would be nice
*| if the current abstraction was more useful but ... -cim 10/15/89
*
* TidPtr current tid in use
* NumTids number of tids in this scan
* tidList evaluated item pointers
*
* CommonState information
*
* OuterTupleSlot pointer to slot containing current "outer" tuple
* ResultTupleSlot pointer to slot in tuple table for projected tuple
* ExprContext node's current expression context
* ProjInfo info this node uses to form tuple projections
* NumScanAttributes size of ScanAttributes array
* ScanAttributes attribute numbers of interest in this tuple
* ----------------
*/
typedef struct TidScanState
{
CommonState cstate; /* its first field is NodeTag */
int tss_NumTids;
int tss_TidPtr;
int tss_MarkTidPtr;
ItemPointer *tss_TidList;
HeapTupleData tss_htup;
} TidScanState;
/* ----------------------------------------------------------------
* Join State Information