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Actually, nodeBitmapIndexscan.c doesn't need to create a standard 

ExprContext at all, since it never evaluates any qual or tlist expressions.
This commit is contained in:
Tom Lane 2005-04-24 17:32:46 +00:00
parent 24475a7618
commit 8403741796
1 changed files with 11 additions and 20 deletions
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31
src/backend/executor/nodeBitmapIndexscan.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/executor/nodeBitmapIndexscan.c,v 1.4 2005/04/23 21:32:34 tgl Exp $
* $PostgreSQL: pgsql/src/backend/executor/nodeBitmapIndexscan.c,v 1.5 2005/04/24 17:32:46 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -132,17 +132,10 @@ ExecBitmapIndexReScan(BitmapIndexScanState *node, ExprContext *exprCtxt)
{
/*
* If we are being passed an outer tuple, save it for runtime key
* calc. We also need to link it into the "regular" per-tuple
* econtext.
* calc.
*/
if (exprCtxt != NULL)
{
ExprContext *stdecontext;
econtext->ecxt_outertuple = exprCtxt->ecxt_outertuple;
stdecontext = node->ss.ps.ps_ExprContext;
stdecontext->ecxt_outertuple = exprCtxt->ecxt_outertuple;
}
/*
* Reset the runtime-key context so we don't leak memory as each
@ -220,10 +213,9 @@ ExecEndBitmapIndexScan(BitmapIndexScanState *node)
relation = node->ss.ss_currentRelation;
/*
* Free the exprcontext(s) ... now dead code, see ExecFreeExprContext
* Free the exprcontext ... now dead code, see ExecFreeExprContext
*/
#ifdef NOT_USED
ExecFreeExprContext(&node->ss.ps);
if (node->biss_RuntimeContext)
FreeExprContext(node->biss_RuntimeContext);
#endif
@ -291,9 +283,9 @@ ExecInitBitmapIndexScan(BitmapIndexScan *node, EState *estate)
/*
* Miscellaneous initialization
*
* create expression context for node
* We do not need a standard exprcontext for this node, though we may
* decide below to create a runtime-key exprcontext
*/
ExecAssignExprContext(estate, &indexstate->ss.ps);
/*
* initialize child expressions
@ -471,14 +463,13 @@ ExecInitBitmapIndexScan(BitmapIndexScan *node, EState *estate)
/*
* If all of our keys have the form (var op const), then we have no
* runtime keys so we store NULL in the runtime key info. Otherwise
* runtime key info contains an array of pointers (one for each index)
* to arrays of flags (one for each key) which indicate that the qual
* needs to be evaluated at runtime. -cim 10/24/89
* runtime key info contains an array of pointers to runtime key
* expressions.
*
* If we do have runtime keys, we need an ExprContext to evaluate them;
* the node's standard context won't do because we want to reset that
* context for every tuple. So, build another context just like the
* other one... -tgl 7/11/00
* If we do have runtime keys, we need an ExprContext to evaluate them.
* We could just create a "standard" plan node exprcontext, but to
* keep the code looking similar to nodeIndexscan.c, it seems better
* to stick with the approach of using a separate ExprContext.
*/
if (have_runtime_keys)
{