kz930 opened a new issue, #7319:
URL: https://github.com/apache/texera/issues/7319
### What happened?
`attributeTypeRules` is how an operator states which column types a picker
accepts, and upstream already uses it wherever a chart consumes a column as a
quantity — Range Slider constrains its `Y-axis` to integer, long and double
precisely because that column is aggregated.
Sankey Diagram consumes `Value Attribute` the same way: it groups by source
and target and sums that column into the link width. It declares no rule at
all, so the form offers every column and accepts a string one. When it does,
the sum concatenates instead of adding, and the concatenated text reaches
plotly as the link value. Plotly accepts non-numeric link values without
complaint, so the diagram renders and looks finished while its links carry no
meaningful width — the failure is invisible to the user.
Expected: the picker offers only integer, long and double, the way Range
Slider's `Y-axis` does.
### How to reproduce?
Drop a Sankey Diagram after any source that has a string column and select
that column as `Value Attribute`. With a three-row frame whose `src`/`dst` are
`n1→n2`, `n1→n2`, `n2→n3` and whose string value column holds `a`, `b`, `c`,
the group-and-sum yields `ab` and `c`, plotly receives `link.value = ('ab',
'c')`, and the chart renders with no error and no warning.
### Version/Branch
1.3.0-incubating-SNAPSHOT (main)
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