Martin Desruisseaux created SIS-554:
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Summary: Replace GridEvaluator by an interface
Key: SIS-554
URL: https://issues.apache.org/jira/browse/SIS-554
Project: Spatial Information Systems
Issue Type: Improvement
Components: Coverage
Affects Versions: 1.2, 1.1
Reporter: Martin Desruisseaux
Assignee: Martin Desruisseaux
Fix For: 1.3
{{BandedCoverage.evaluator()}} is a method returning an object which can be
used for computing or interpolating values of a coverage at arbitrary
geospatial positions. The evaluator takes care of reprojecting the given
positions and converting to grid coordinates. The type of this evaluator is the
{{BandedCoverage.Evaluator}} interface.
{{GridCoverage.evaluator()}} overrides that method for returning a more
specialized type, which provides additional methods specific to gridded data
(for example {{setDefaultSlice(…)}}. However the type of the evaluator returned
by this method is the {{GridEvaluator}} concrete type. It was a mistake, that
method should have returned an interface. Not doing so make more difficult to
create for example evaluators that are wrappers around other evaluators.
We propose to add a new {{GridCoverage.Evaluator}} interface and to change the
return type of {{GridCoverage.evaluator()}} to that interface. The latter
action would be an incompatible change which will need to be reported in the
release note. But hopefully this method is not yet too widely used, it should
be an easy change for users.
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