Martin Desruisseaux created SIS-595:
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Summary: AbstractMathTransform.tryConcatenate(…) needs more context
Key: SIS-595
URL: https://issues.apache.org/jira/browse/SIS-595
Project: Spatial Information Systems
Issue Type: Improvement
Components: Referencing
Affects Versions: 1.4, 1.3, 1.2, 1.1, 1.0, 0.8
Reporter: Martin Desruisseaux
The {{AbstractMathTransform}} class has a protected {{tryConcatenate(…)}}
method that subclasses can override for optimizing the way that two consecutive
{{MathTransform}} instances are concatenated. However, its method signature
allows the implementer to know only one contextual {{MathTransform}}: the one
just before, or the one just after, the {{MathTransform}} to concatenate.
Sometime this is not sufficient.
A more extensible approach would be to replace the current signature by a
single {{Joiner}} argument (that class name may be revisited) with methods such
as:
* {{getTransform(int relativeOffset)}} where argument -1 gives the transform
before and +1 gives the transform after.
* {{replacePrevious(MathTransform concatenation)}} replaces the previous
transform and this transform by the given concatenation result.
* {{replaceNext(MathTransform concatenation)}} replaces this transform and the
next transform by the given concatenation result.
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