Package org.geotools.referencing.operation

Class MathTransformProvider.Delegate

Object
MathTransformProxy
Delegate
All Implemented Interfaces:
Serializable, MathTransform
Enclosing class:
MathTransformProvider
protected static final class MathTransformProvider.Delegate extends MathTransformProxy
The result of a call to createMathTransform. This class encapsulates a reference to the originating provider as well as the created math transform. This information is needed when a provider delegates the work to an other provider according the parameter values. For example a generic instance of ProviderAffine may delegates the creation of an affine transform to an other ProviderAffine instance with source and target dimensions matching the supplied parameters, because those dimensions determine the set of legal "elt_j_i" parameters.

Most math transform provider do not delegate their work to an other one, and consequently do not need this class.

Future Geotools version may extends this class for handling more information than just the transform creator. This class is more convenient than adding new methods right into MathTransformProvider, because it is sometime difficult for a provider to infer all the conditions prevaling when createMathTransform was executed. Furthermore, it avoid to pollute MathTransformProvider with methods unused for the vast majority of providers.

Since:
2.2
Author:
Martin Desruisseaux (IRD)
See Also:

  • Field Details

  • Constructor Details

    • Delegate

      public Delegate(MathTransform transform, OperationMethod method)
      Encapsulates the math transform created by the specified provider.
      Parameters:
      transform - The math transform created by provider.
      method - The provider, typically as an instance of MathTransformProvider.