Gilles created MATH-1151:
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Summary: Cast can fail in "LazyUnweightedEvaluation"
Key: MATH-1151
URL: https://issues.apache.org/jira/browse/MATH-1151
Project: Commons Math
Issue Type: Bug
Reporter: Gilles
Assignee: Gilles
Priority: Minor
Fix For: 3.4
In "LeastSquaresFactory.java" at line 487, a cast is performed that will fail
when the "model" argument is not instantiated with the "model" method (defined
at line 278).
A fix could consist in the methods defined in (currently internal, line 291)
class "LocalMultivariateJacobianFunction" becoming part of the public API, in
an extension of the "MultivariateJacobianFunction" interface.
The contructor of "LocalLeastSquaresProblem" (at line 371) should then throw an
exception if lazy evaluation is requested but the "model" does not implement
the appropriate interface.
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