Add ScalarQuadraticCoefficientChange #2296
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| MOI.modify(recursive_model(b), bridge(b, ci_or_obj), change) | ||
| catch | ||
| MOI.throw_modify_not_allowed(ci_or_obj, change) | ||
| end |
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@blegat do you have any ideas for this? We can't add a generic fallback for the ::Bridge case of the second argument because then we don't know whether we're changing a constraint or an objective.
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Not sure what you mean. I would add a fallback in Bridges/bridge.jl. If you want to differentiate, you have Bridges.Objective.AbstractBridge and Bridges.Constraint.AbstractBridge.
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But how do we know which ConstraintIndex it refers to?
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Ah yes, I guess this is an annoying part of this error. This is also why you had to do a try-catch in #2300.
I think we should allow throwing this error without knowing what is the constraint index is.
At the end of the day, after the index maps, this might not be the index of the user anyway.
Or we could allow specifying a bridge instead of an index but then we still need the try catch in #2300
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Yeah a generic ModifyNotAllowed would be simpler. But that could be a separate PR after this is merged?
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Yes but then open an issue or leave a comment here to keep not of that
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Opened an issue: #2306. I'll work on it after this PR is merged
Closes #1208