fix: make sure that RDD iterators return correct type for max, min and sum

[CaiJimmy]

RDD-based min(), max() and sum() now type their results the same way as local evaluation. Untyped values are converted to xs:double before aggregating, including when the input has a single item. When the input mixes primitive types (float with double or decimal, or string with xs:anyURI), the result is converted to their common type.

An input of a single primitive type keeps the selected item and its derived type. Local and RDD evaluation share this logic through ExtremumEvaluation.

[github-actions]

QT3 Test Results - Parser: jsoniq

Regression baseline: run 37529089746

🎉 No regressions found for this build.

✅ Improvement summary: 2 test(s) previously failing, errored, or skipped now pass.

Suite	Test file	Test case
fn		fn/max.xml:fn-max-13
fn		fn/min.xml:fn-min-13

Summary of passed tests for jsoniq

Test Suite	Passing	Failing	Errors	Skipped	Missing features	Total
app	2037	27	88	5	5	2157
array	208	0	1	0	0	209
fn	10310	268	170	387	315	11135
map	220	0	0	0	0	220
math	149	0	0	0	0	149
misc	764	34	21	52	18	871
op	4339	4	23	0	0	4366
prod	11473	340	186	208	7	12207
ser	332	11	0	0	0	343
xs	155	0	0	9	0	164
Total	29987	684	489	661	345	31821

Full analysis report: see analysis-jsoniq in artifacts.

Download detailed test results

[github-actions]

QT3 Test Results - Parser: xquery

Regression baseline: run 37529089746

🎉 No regressions found for this build.

✅ Improvement summary: 2 test(s) previously failing, errored, or skipped now pass.

Suite	Test file	Test case
fn		fn/max.xml:fn-max-13
fn		fn/min.xml:fn-min-13

Summary of passed tests for xquery

Test Suite	Passing	Failing	Errors	Skipped	Missing features	Total
app	2044	26	82	5	5	2157
array	209	0	0	0	0	209
fn	10332	247	169	387	315	11135
map	220	0	0	0	0	220
math	149	0	0	0	0	149
misc	768	30	21	52	18	871
op	4339	4	23	0	0	4366
prod	11554	292	153	208	7	12207
ser	343	0	0	0	0	343
xs	155	0	0	9	0	164
Total	30113	599	448	661	345	31821

Full analysis report: see analysis-xquery in artifacts.

Download detailed test results