public WindowGroup(
AnalyticExpr analyticExpr,
SlotDescriptor logicalOutputSlot,
SlotDescriptor logicalIntermediateSlot) {
partitionByExprs = analyticExpr.getPartitionExprs();
orderByElements = analyticExpr.getOrderByElements();
window = analyticExpr.getWindow();
analyticExprs.add(analyticExpr);
analyticFnCalls.add(analyticExpr.getFnCall());
logicalOutputSlots.add(logicalOutputSlot);
logicalIntermediateSlots.add(logicalIntermediateSlot);
}
/**
* True if the partition exprs and ordering elements and the window of analyticExpr match ours.
*/
public boolean isCompatible(AnalyticExpr analyticExpr) {
if (requiresIndependentEval(analyticExprs.get(0)) || requiresIndependentEval(analyticExpr)) {
return false;
}
if (!Expr.equalSets(analyticExpr.getPartitionExprs(), partitionByExprs)) {
return false;
}
if (!analyticExpr.getOrderByElements().equals(orderByElements)) return false;
if ((window == null) != (analyticExpr.getWindow() == null)) return false;
if (window == null) return true;
return analyticExpr.getWindow().equals(window);
}