Function ExecReScanBitmapOr

src/backend/executor/nodeBitmapOr.c:240–270

}

void
ExecReScanBitmapOr(BitmapOrState *node)
{
	/*
	 * For optimizer a rescan call on BitmapIndexScan could free up the bitmap. So,
	 * we voluntarily set our bitmap to NULL to ensure that we don't have an out
	 * of scope pointer
	 */
	node->bitmap = NULL;

	int			i;

	for (i = 0; i < node->nplans; i++)
	{
		PlanState  *subnode = node->bitmapplans[i];

		/*
		 * ExecReScan doesn't know about my subplans, so I have to do
		 * changed-parameter signaling myself.
		 */
		if (node->ps.chgParam != NULL)
			UpdateChangedParamSet(subnode, node->ps.chgParam);

		/*
		 * If chgParam of subnode is not null then plan will be re-scanned by
		 * first ExecProcNode.
		 */
		if (subnode->chgParam == NULL)
			ExecReScan(subnode);
	}
}