/* ---------------- * ExecAssignProjectionInfo * * forms the projection information from the node's targetlist * * Notes for inputDesc are same as for ExecBuildProjectionInfo: supply it * for a relation-scan node, can pass NULL for upper-level nodes * ---------------- */ void ExecAssignProjectionInfo(PlanState *planstate, TupleDesc inputDesc) { planstate->ps_ProjInfo = ExecBuildProjectionInfo(planstate->plan->targetlist, planstate->ps_ExprContext, planstate->ps_ResultTupleSlot, planstate, inputDesc); }
/* ---------------------------------------------------------------- * ExecInitPartitionSelector * * Create the run-time state information for PartitionSelector node * produced by Orca and initializes outer child if exists. * * ---------------------------------------------------------------- */ PartitionSelectorState * ExecInitPartitionSelector(PartitionSelector *node, EState *estate, int eflags) { /* check for unsupported flags */ Assert (!(eflags & (EXEC_FLAG_MARK | EXEC_FLAG_BACKWARD))); PartitionSelectorState *psstate = initPartitionSelection(node, estate); /* tuple table initialization */ ExecInitResultTupleSlot(estate, &psstate->ps); ExecAssignResultTypeFromTL(&psstate->ps); ExecAssignProjectionInfo(&psstate->ps, NULL); /* initialize child nodes */ /* No inner plan for PartitionSelector */ Assert(NULL == innerPlan(node)); if (NULL != outerPlan(node)) { outerPlanState(psstate) = ExecInitNode(outerPlan(node), estate, eflags); } /* * Initialize projection, to produce a tuple that has the partitioning key * columns at the same positions as in the partitioned table. */ if (node->partTabTargetlist) { List *exprStates; exprStates = (List *) ExecInitExpr((Expr *) node->partTabTargetlist, (PlanState *) psstate); psstate->partTabDesc = ExecTypeFromTL(node->partTabTargetlist, false); psstate->partTabSlot = MakeSingleTupleTableSlot(psstate->partTabDesc); psstate->partTabProj = ExecBuildProjectionInfo(exprStates, psstate->ps.ps_ExprContext, psstate->partTabSlot, ExecGetResultType(&psstate->ps)); } initGpmonPktForPartitionSelector((Plan *)node, &psstate->ps.gpmon_pkt, estate); return psstate; }